E-PAC (Version 3) C, CI and E-Series Systems, MAX/MAX12 User Manual
References in the manual WARNING! This refers to a potentially dangerous situation which may lead to personal injury. CAUTION! This refers to a potentially dangerous situation which may lead to damage to the equipment. IMPORTANT! This refers to a situation which may cause the equipment to malfunction. Symbols on the equipment Please refer to the information in the operating manual. WARNING! Dangerous voltage! General Information E-PAC (Version 3 with Display) User Manual Version 6.
Contents Safety precautions .....................................................5 Information regarding use of the E-PAC..............................................5 Information regarding use of loudspeakers.........................................6 1. Introduction ...........................................................9 1.1. System concept.............................................................................9 1.2. E-PAC based systems ...........................................................
2.11. 2.12. 2.13. 2.14. 2.15. 2.16. Device Name.................................................................. 30 Display Options.............................................................. 30 Information ..................................................................... 31 Log ................................................................. 31 Power Supply.................................................................. 32 Frequency Generator....................................................
Safety precautions Before you use our products, read the manual carefully and observe all the safety precautions. They will protect you and help to avoid equipment failures. Keep this manual in a safe place so that it is available for future reference. If you supply d&b products, please draw the attention of your customers to these safety guidelines. Enclose the relevant manuals with the systems. If you require additional manuals for this purpose, you can order them from d&b (order form on the last page).
Always disconnect the mains power supply when replacing a defective fuse. Only use the type of fuse listed in the specifications. WARNING! Only carry out work specified in this manual and always disconnect the mains power supply.
CAUTION! Only use loudspeakers in the C and E-Series with the P1200A mainframe fitted with the correct controller modules or with a correctly configured E-PAC. The contoller models cone excursion and voice coil temperature of the drivers. When loudspeakers are operated without the correct controller, in addition to losses in tone, there is a risk of damage to the components. Any defects arising from operation other than those specified in this manual will be excluded from any warranty claims.
d&b E-PAC Power Amplifier Controller E-PAC ISP LEVEL PUSH MENU GR OVL MUTE POWER SPEAKER OUT E-PAC MIX IN INPUT SERVICE Z2500000101236 C AU TION R ISK O F ELECT RIC SHOCK DO NOT OPEN Made in Germany www.dbaudio.
1. Introduction This user manual describes the facilities and functions of d&b systems which are operated with the E-PAC power amplifier controller. It covers the operation of the E-PAC and the loudspeakers used in these systems. d&b publishes additional application and technical information notes (TI). Examples for different applications and combinations of d&b C-Series and E-Series systems are given in TI 326.
1.2. E-PAC based systems E-PAC is a single channel amplifier with an internal controller for operating C, CI and E-Series, MAX/MAX12 loudspeakers. The controller incorporated in the E-PAC is based on a Digital Signal Processor, DSP, utilising sigma-delta signal conversion.
2. E-PAC power amplifier controller The E-PAC incorporates a power supply, single channel power amplifier, Digital Signal Processor (DSP), all necessary protection circuits, a remote interface, controls and indicators. The E-PAC is housed in a 2RU high, rugged enclosure and can be operated as a stand alone unit. Optional accessories allow single a E-PAC to be installed in standard 9.5" or 19" equipment racks or flightcases. A dual rack kit is available for mounting a pair side-by-side (see Section 2.16.
2.2. Load Monitoring 2.2.1. Features d&b Load Monitoring is designed to identify a possible loudspeaker malfunction. This supervision is carried out during regular operation, ensuring that the state of the loudspeaker system is known at all time. d&b Load Monitoring is especially designed to fulfil the requirements stated in the German Standard EN60849 'Elektroakustische Notfallwarnsysteme' (equivalent to international standard IEC 60849 'Sound systems for emergency purposes'). 2.2.2.
2.2.3. d&b Load Monitoring and the IEC 60849 (EN 60849) standard Notes The following are only excerpts of the IEC 60849 (EN 60849) standard which affect the d&b Load Monitoring together with the E-PAC power amplifier controller. WARNING! The Detection Time must be set to 100 seconds or lower. Prerequisite is the successful Calibration of Load Monitoring and the correct configuration (see also Chap. 2.10.3. following on page 34). According to 5.) Technical requirements on the system According to 5.
2.3. Power amplifier The single channel power amplifier of the E-PAC maintains high linearity throughout its operational range even into adverse loads. With fast response to, and recovery from overload conditions, stability and accurate performance is guaranteed. A two stage power supply keeps the losses through heat emission low. To maintain sound quality, a limiter circuit prevents the amplifier from continously reaching its maximum output voltage, known as clipping.
The nominal operating range of the E-PAC is between 85 V and 265 V (100 V 15% /230 V +15 %). Where voltages outside of this range are present, a self-resetting protective circuit responds quickly to isolate the internal amplifier power supply leaving only a supervisory circuit to monitor the mains voltage. The display will clearly indicate the fault and voltage value, the display illumination switching off after 10 seconds.
2.7. Remote control & monitoring The E-PAC is fitted with a remote interface for various levels of remote control and system supervision. The remote interface connection is opto-coupled and floating. Selection of the remote control setup is made in E-PAC the Remote menu. 2.7.1. Remote-Mode 'RIB/TI212' 'RIB/TI212' is the simplest method of remote control.
2.7.5. Remote status information with ROPE or MIDI The status of the following E-PAC functions can be remotely monitored: − − − − − − − − − Configuration MUTE/POWER switch Level control setting Front panel indicator status (ISP, GR, OVL) Protect status (internal protect, short circuit protect, thermal protect) Temperature status (OK/warning/off) Available headroom (pre-limiter) Gain reduction (due to limiter operation) Loudspeaker impedance faults via Load Monitoring according to EN 60849 (IEC 60849) 2.7.
REMOTE addressing ROPE 3 The communication between the d&b Remote Interface Bridge (RIB) and ROPE 3 is carried out by using driver file (.RDF) which is specific to the loudspeaker. Driver files are available for each mainframe (A1/P1200A) and for the E-PAC (Version 3) in its different versions (Firmware version). The driver file defines both a single 'Control'. Each loudspeaker which can be driven by a mainframe, or an E-PAC has a specific driver file. +6 Function (e.g. 'Level') -14 Control e.g.
2.7.7. REMOTE Compatibility IMPORTANT! Exchange of d&b amplifiers in RIB/ROPE applications When exchanging d&b's amplifiers or software versions the following has to be considered: The exchaged device needs to be configured correctly: − In the P1200A mainframe the loudspeaker specific controller modules have to be fitted. − In the E-PAC versions 1 and 2 the configuration is defined by setting the DIP switches on the back of the E-PAC.
2.8. dbUpdate (Update Manager) Notes: We recommend that the settings of the device are noted before executing an 'update' a 'Setting Sheet is provided for this purpose on page 127 of this manual. IMPORTANT! After executing an 'Update' the setting of the device should be checked and corrected if necessary. The default device name is factory preset with the software version which is originally supplied.
2.9. 2.9.1. Mains power switch [1] The on/off switch is located on the rear panel and isolates the mains power supply to the E-PAC. The MUTE/POWER switch [2] on the front panel has the functions ON/MUTE/STANDBY and does not isolate the E-PAC from the mains power supply. [1] ISP LEVEL PUSH MENU GR OVL MUTE POWER Controls and indicators [2] Controls and indicators IMPORTANT! 2.9.2.
2.9.3. LEVEL/PUSH MENU (Digital rotary encoder) [3] Operation, configuration and status viewing of the E-PAC are all accessed via the front panel digital rotary encoder; LEVEL/PUSH MENU. In the main menu the encoder acts as a level control. Pushing or turning the encoder gives access to different menu levels or enables configurations or values to be entered. (Refer to section 2.10 following from page 23) 2.9.4.
2.10. Menu-Mode All operational modes of the E-PAC, pre-programmed system settings and configurations for d&b C, CI- and E-series and MAX/ MAX12 (LINEAR mode) loudspeakers can be set directly within the menu tree. Access is via the front panel digital rotary encoder used in conjunction with the LCD display. 2.10.1. Menu-Tree The settings for Filter_1 and Filter_2 are dependent on the loudspeaker configuration (refer to Chap. 2.10.2.3. Settings - Filter_1 and Filter_2 on page 25) (6.
2.10.2. Conventions for the cursor and menu control The LCD acts as a user interface for all of the menus within the E-PAC. The cursor is controlled via the digital rotary encoder, LEVEL/PUSH MENU. Cursor conventions and indicators are as following: Position-Cursor Turning the encoder moves the cursor through the menu mode. Turning to the right moves the cursor down in the menu tree or to the right. Turning to the left moves the cursor up in the menu tree or to the left.
.1 Boot_Screen The boot procedure takes approximately 4 seconds during which the device name, the manufacturers name, d&b audiotechnik AG, and the firmware version is displayed. The transition to the main menu is carried out automatically. Boot_Screen .2 Main_Menu The main menu displays all of the important E-PAC settings in one view: loudspeaker configuration, Load Monitoring (if selected) with or without Pilot Signal, device name, level and delay value.
Equalizer A 4 band equalizer with an optional Peak-Filter or Notch-Function is incorporated into the signal path before the limiting circuit (refer to chap. 2.1 on page 11). The EQ function has a Master on/off while each of the four bands can be switched independently. If several EQ bands are set with a high boost in the same frequency range, it can cause overflows within the DSP. These errors are recognized internally and the E-PAC will enter mute mode. The error message 'DSP Error 16' is displayed.
Notch-Function The following parameters can be edited in the 'Notch' mode: Set menu, Notch-Function F Filter centre frequency adjustable from 20 Hz to 20 kHz in 3% steps. Q The Q of the filter is adjustable from 0.5 ... 25 in 10% steps. In addition, the bandwidth (BW) as a result of the Q is displayed as a value (2.0 ... 0.04 octaves) in a non-editable field. G The parameter 'Gain' (G) cannot be edited in 'Notch' mode. The centre frequency is fully attenuated (⇒ ∞ dB).
Levels The following are displayed both as bar graphs and as numeric values. Exit the 'Levels-Menu' by pushing the encoder. Gain Input gain, the numeric value is displayed in dB. Adjustable over the range 57.5 dB to +6 dB in 0.5 dB steps (see also 2.10.2.2 Main Menu on page 25). Input Input signal level, the numeric value is displayed in dBu. The small vertical line [A] represents the threshold of input level above which the OVL LED (red) registers an overmodulation of the input.
Mode There are two options to protect the E-PAC against unintentional operation: 1. Press 2s - Prevents accidental operation by locking the front panel controls. 2. Code - Password protection that prevents operation by unauthorized persons. Lock now Pushing the encoder switches the E-PAC into Lock mode and exits the sub-menu 'Lock'. Back Exits the sub-menu 'Lock' without entering Lock mode.
Device Name Device Name Enables the assignment or editing of a device name (Maximum 15 characters): 1. Entering the sub-menu 'Device Name', will position the cursor at the beginning of the existing entry. As a factory preset 'E-PAC' followed by the firmware version is entered. 2. Pushing the encoder enters edit mode. The pointer, ( ), indicates the entry position for new, or edited, characters. An alphabet, in capital letters only, is displayed in the bottom line. 3.
Information Temp. The temperature of the E-PAC heatsink. Information monitor Firmware The version of software installed in the E-PAC. DSP-Ver The version of active software installed in the E-PAC DSP. Ser-No. (S/N) Serial number of the E-PAC. Logbook monitor Log A log book containing information relating to the use and enviromental conditions experienced throughout the operating life of the E-PAC.
ImpErrHF A numerical value indicating the number of impedance faults in the HF section of the connected loudspeaker (Load Monitoring). Proportionate temperature ranges These display the proportion of 'On Time' the E-PAC has been operated within the temperature ranges listed. Power Supply The firmware version of the switched mode power supplys micro controller is listed on the right hand side of the top line. Mains The value of the mains voltage power supply to which the E-PAC is connected in volts.
Load Monitoring Load Monitoring IMPORTANT! Notes: The Load Monitoring is designed for the supervision of up to two loudspeakers connected in parallel (see also 'Notes on non-automated settings' on page 36). The Load Monitoring does not function when: − the device is muted. − the Pilot Signals function is turned off. − the signal levels are too low. Load Monitoring menu Mode on/off Switching the Load Monitoring On or Off.
Z-Max Pilot Upper window limit of the impedance, when measured with Pilot Signal. Pilot-Level Output voltage of the Pilot Signal. U-Threshold Switching threshold from measurement with Pilot Signals to measurement with Program. Last-Err Z Last determined impedance value that has led to a reported impedance error. This value will remain unchanged even after acknowledgment of the error message.
What happens during the Calibration? − Load Monitoring is switched off. − The impedance limits are determined for measurements made with Pilot Signals and Program during operation. − The minimum signal levels for the Pilot Signals are determined; these are necessary to ensure exact measurement results. − The display values for the last impedance error ('Last-Err Z') are set to 0.0 Ohms.
Notes on non-automated settings d&b Load Monitoring checks the impedance of the attached load periodically and reports any transgression of the upper or lower limits. The three situations described below are exceptions where the automatic Calibration settings will not suffice for the operating conditions, and where a manual adjustment to the impedance parameters is required.
2.11. List of possible error messages − System Error [nnn]: An internal fault has occured. The − − − − − − − − − − − − − number nnn can provide your d&b service partner with information on the exact cause of the fault. Switch the E-PAC off and on again. Program Error [nnn]: A fault has occured in the control processor. The number nnn can provide your d&b service partner with information on the exact cause of the fault. Switch the E-PAC off and on again. Overvoltage ([xxx] V): Mains overvoltage.
− SpkrFault LF ([xx Ω]): The LF path of the connected loudspaeaker has failed. The display shows the value (ohms) which led to the fault. − SpkrFault HF ([xx Ω ]): The HF path of the connected loudspaeaker has failed. The display shows the value (ohms) which led to the fault. 2.11.1. Further messages The following messages are for information on the status of the E-PAC and not error messages: − Standby: Indicates the E-PAC is in standby mode (see section 2.7.2. MUTE/POWER switch, on page 17).
2.12. Connections [9] 2.12.1. Mains power connection [8] and fuse protection [9] A 3-pin IEC socket with an integrated fuse holder is provided for connecting the E-PAC to the mains power supply. A suitable power cable is supplied. [8] WARNING! Before you connect the device, check that the mains voltage and frequency corresponds to the specifications on the configuration sticker on the rear of the E-PAC. Only connect the E-PAC to mains power supplies with an earth (ground) conductor.
2.12.5. REMOTE [14] The E-PAC is fitted with a two-wire serial remote control interface, (2 x RJ 45). All pins of both connectors are wired in parallel allowing either to be used as the input. Where remote control networking conforms to a 'Bus or Ring topology' one connector is used for the incoming signal and the second connector allows for direct connection to another device. The remote interface connections are opto-coupled. Remote operation is detailed in section 2.7.
Signal waveform 2.13. Power consumption and power loss Crest factor Sine wave 1.4 Pink noise, compressed music 2.8 Compressed music 3.5 Music with medium dynamic range 5 Speech, music with wide dynamic range 8 The power required from the mains supply and the waste heat produced by the amplifiers power loss are variable figures depending on the load impedance and the signal levels and characteristics (e.g. speech, music).
Page 42 of 128 E-PAC Version 3, User Manual
2.14. Technical specifications Displays ISP .............................................................................Input Signal Present indicator (green) GR ...................................................................................Gain Reduction indicator (yellow) OVL.....................................................................................Overload/Error indicator (red) MUTE/POWER .....................................................
Digital Signal Processing Sampling rate................................................................................................ 48 kHz / 24 bit Basic delay.................................................................................................................... 1 msec. Maximum delay setting .................................................... 220 msec. (75.68 m/246.1 ft) Power consumption (typical values) Standby .............................................................................
2.16. Installation A single E-PAC may be installed in a 9.5" equipment rack or a standard 19 equipment rack or flightcase. A single E-PAC or a pair side-by-side may be installed in a standard 19" equipment rack or flightcase. E-PACs require two rack units and, including connectors, a minimum rack depth of 40 cm (15.7"), mounting ear to rack rear panel. 2 cm / 0.
The solo rack mount kit (Z2501) allows one E-PAC to be mounted either to the left or the right hand side in a standard 19" equipment rack or flightcase. The solo rack mount kit (Z2501) includes the following parts: − − − − − [3] 1 front blanking panel [5] 1 front rack mounting bracket [2] 1 rear mounted rack ear [3] 4 mounting rails [1] 6 Allen screws [S], Allen key [4] [1] [2] [5] The dual rack mount kit (Z2502) allows two EPACs side-by-side to be mounted in a standard 19" rack or flightcase.
3. Loudspeaker On the following pages you will find data sheets for the d&b loudspeakers which can be operated with the E-PAC. The data sheets contain information about the loudspeakers and operation with their respective E-PAC and P1200 controller settings. 3.1. Data sheets for the loudspeakers The following data sheets are a compilation of the individual data sheets for the d&b loudspeakers.
Page 48 of 128 E-PAC Version 3, User Manual
E0 The E0 is a compact, coaxial 2-way loudspeaker fitted with a 5 LF driver and 1 dome tweeter and has a maximum sound pressure level of 116 dB SPL.
CUT circuit Set to CUT, a high pass filter with a 120 Hz cut off frequency is inserted in the controller signal path. The E0 is now configured for use with d&b C and E-Series active subwoofers. HFA circuit The HFA (High Frequency Attenuation) mode rolls off the HF of the E0 to provide a balanced frequency response when a unit is placed close to listeners in near field or delay situations. HFA begins gradually at 1 kHz, dropping by approximately 3 dB at 10 kHz.
Technical specifications E0 system data Frequency response (5 dB).....................................................................80 Hz ... 20 kHz Max. sound pressure with E-PAC (1 m, free field) ......................................116 dB SPL (SPLmax peak, pink noise test signal with crest factor of 4) Input level (SPLmax) ....................................................................................................+9 dBu Input level (100 dB-SPL / 1 m)...........................................
E1 The E1 cabinet is a full range, two way bass-reflex enclosure. Fitted with two 5" LF drivers passively connected to a ring radiator with a 60° conical dispersion. The E1 cabinet is constructed from marine plywood with an impact resistant paint finish. The front of the loudspeaker cabinet is fitted with a rigid metal grill covered with a replaceable acoustically transparent foam.
E1 controller module switches E1-CO CUT CUT switch and indicator Set to CUT, a high pass filter with a 110 Hz cut-off frequency is inserted in the controller signal path. The yellow CUT LED illuminates. The E1 system is now configured for use with d&b C or E-Series active subwoofers. OVL Operation with E-PAC (only possible with E-PAC version 3 with display) ISP GR MUTE To drive E1 cabinets the E-PAC has to be configured to E1 mode.
Technical specifications E1 system data Frequency response (5 dB).....................................................................75 Hz ... 15 kHz Max. sound pressure (1 m, free field) ................................................................... 118 dB (SPLmax peak, pink noise test signal with crest factor of 4) Input level (SPLmax) ....................................................................................................+7 dBu Input level (100 dB-SPL / 1 m)............................
E3 60 The E3 cabinet is a full range, two way bass-reflex enclosure. Fitted with a single 6.5" LF driver passively connected to a 1" HF compression driver coupled to a constant directivity horn with a 90° x 60° dispersion. Illustrated in the drawing on the left is an E3 with the standard 90° horizontal horn configuration. The horn can be rotated through 90° for a reversed 60° x 90° (h x v) dispersion. 90 The E3 cabinet is constructed from marine plywood with an impact resistant paint finish.
Connections 1+ 1 2+ 2 The E3 cabinet is fitted with a pair of Speakon-NL4 connectors. All four pins of both connectors are wired in parallel. The E3 uses the pin assignments 1+/1. Pins 2+/2 are designated to active d&b subwoofers. Using one connector as the input, the second connector allows for direct connection to additional loudspeakers. The connector plate is fitted to the E3 rear panel. Next to it, on the left hand side panel, is a metal blank plate with the cabinet details and serial number.
REMOTE LO IMP 1234 DELAY ON REMOTE LO IMP ON ON 1 2 3 4 5 6 Operation with E-PAC To drive E3 cabinets the E-PAC has to be configured to E3 mode. 1 2 3 4 5 6 7 8 SPKR HFA CUT E-PAC version 1 E-PAC version 2 E-PAC Configuration for E3 For an E-PAC version 1 and 2, the configuration is selected by setting the appropriate DIP switches on the rear panel. For an E-PAC version 3, the configuration is set via a front panel digital rotary encoder in conjunction with an LCD.
Technical specifications E3 system data Frequency response (5 dB) .................................................................... 80 Hz ... 18 kHz Max. sound pressure (1 m, free field) ...................................................................122 dB (SPLmax peak, pink noise test signal with crest factor of 4) Input level (SPLmax).................................................................................................... +9 dBu Input level (100 dB-SPL / 1 m) ...........................
E9 The E9 cabinet is a full range, two way bass-reflex enclosure fitted with a single 12" LF driver passively connected to a 2" HF compression driver coupled to a vertically asymmetrical 90° x 50° CD horn. The asymmetry of the HF horn means that the E9 has a vertical coverage pattern with a downward tilt. The actual vertical dispersion is 20° above and 30° below the cabinet axis. The E9 cabinet is constructed from marine plywood and has an impact resistant paint finish.
Operation with P1200A Up to two E9 loudspeakers can be driven by each P1200A power amplifier channel. Fitting one E9-CO and one subwoofer controller module allows a single mainframe to drive two E9 and two active subwoofer cabinets (E18-SUB or C7-SUB). All cabinets can be linked together locally and fed by a single four-wire cable from either mainframe output connector. The E9 can also be used with the E15-BX bass extension cabinet.
The E-PAC can drive a single E9 cabinet at an output power of 300 watts. LO IMP mode allows the E-PAC to drive two E9 cabinets with a 6 dB reduction of input level to the speakers. HFA setting In HFA mode (High Frequency Attenuation), the HF response of the E9 system is rolled off. The HFA circuit configures the E9 loudspeakers to provide a natural, balanced frequency response when a unit is placed close to listeners in near field or delay use.
Technical specifications E9 system data Frequency response (5 dB) .................................................................... 50 Hz ... 17 kHz Max. sound pressure (1 m, free field) with P1200A ...........................................128 dB Max. sound pressure (1 m, free field) with E-PAC ..............................................126 dB (SPLmax peak, pink noise test signal with crest factor of 4) Input level (SPLmax)............................................................................
E12-SUB The E12-SUB is a compact bass-reflex design employing a high excursion 12" driver. The large, specially shaped reflex port enables the E12-SUB to achieve high sound pressure levels with minimal power compression and breathing effects. The E12-SUB cabinet is constructed from marine plywood and has an impact resistant paint finish. The front of the loudspeaker cabinet is fitted with a rigid metal grill covered with a acoustically transparent foam.
140 Hz Function (Filter_1) With E-PAC version 3 (Firmware version 3.13) only. If the 140 Hz function (Filter_1) is selected, the upper operating frequency of the system is increased from 120 Hz to 140 Hz. This setting allows the E12-SUB to operate with up to four E0 loudspeakers. Technical specifications E12-SUB system data Frequency response (5 dB) ....................................................................50 Hz ... 120 Hz Max. sound pressure (1 m, free field).....................................
E18-SUB The E18-SUB is a compact, very low tuned bass-reflex design employing a single 18" driver. The E18-SUB loudspeaker cabinet is constructed from marine plywood and has an impact resistant paint finish. The front of the loudspeaker cabinet is fitted with a rigid metal grill covered with a replaceable acoustically transparent foam. Also at the front, fittings at the top and bottom edges of the cabinet are used to secure an optional transport lid E7908.
- & Operation with P1200A Up to two E18-SUBs can be driven by each P1200A power amplifier channel. Fitting one E18-SUB-CO and one C or E-Series TOP controller module allows a single mainframe to drive two E18SUB and two (E3: four) mid/high cabinets. All cabinets can be linked together locally and fed by a single four-wire cable from either mainframe output connector.
Technical specifications E18 system data Frequency response (5 dB)........................................................38 Hz ... 110 / 160 Hz Max. sound pressure (1 m, free field) with P1200A........................................... 130 dB Max. sound pressure (1 m, free field) with E-PAC ............................................. 128 dB (SPLmax peak, pink noise test signal with crest factor of 4) Input level (SPLmax) ..................................................................................
C6 The C6 cabinet is a full range, two way bass-reflex enclosure fitted with a 12" LF driver passively connected to a 2" HF compression driver which is coupled to a 60° x 40° CD horn. The C6 cabinet is constructed from marine plywood and has an impact resistant paint finish. The front of the loudspeaker cabinet is fitted with a rigid metal grill covered with a replaceable acoustically transparent foam.
Operation with P1200A Up to two C6 loudspeakers can be driven by each P1200A power amplifier channel. Fitting one C6-CO and one subwoofer controller module allows a single mainframe to drive two C6 and two active subwoofer cabinets (E18-SUB, C4-SUB or C7-SUB). All cabinets can be linked together locally and fed by a single four-wire cable from either mainframe output connector.
HFA setting In HFA mode (High Frequency Attenuation), the HF response of the C6 system is rolled off. The HFA circuit configures the C6 loudspeakers to provide a natural, balanced frequency response when a unit is placed close to listeners in near field or delay use. 10 5 0 -5 -10 High Frequency Attenuation begins gradually at 1 kHz, dropping by approximately 3 dB at 10 kHz.
Technical specifications C6 (C690) system data Frequency response (5 dB) .................................................................... 70 Hz ... 17 kHz Max. sound pressure (1 m, free field) with P1200A ................................133 (132) dB Max. sound pressure (1 m, free field) with E-PAC ...................................131 (130) dB (SPLmax peak, pink noise test signal with crest factor of 4) Input level (SPLmax)...............................................................................
C4-TOP The C4-TOP is a two way horn loaded loudspeaker which provides high SPL coverage from mid to high frequencies. The constant directivity design of the C4-TOP's coaxial horns ensures that it's 35° x 35° dispersion is maintained down to 800 Hz. The driver complement consists of two passively coupled devices - a 12" low/ mid frequency driver and a 2" HF compression driver.
C4-TOP C4-TOP controller module switches HFC HFC switch & indicator In HFC mode (High Frequency Compensation, yellow HFC LED illuminated), the response of the system is tailored for remote listening positions. The characteristics of HFC mode are detailed in the graph below right. OVL Selecting the HFC switch compensates for loss of high frequency energy due to absorption in air when loudspeakers are used to cover far field listening postions.
Ground stacks are normally constructed by placing cabinets directly on top of each other. Having no vertical angle between TOP cabinets produces a strong coupling effect and increases vertical directivity which helps to provide coverage to the far field. However it is not recommended to stack TOP cabinets more than three high as this produces very different dispersion patterns in the mid and high frequency range.
Dispersion characteristics The diagrams below show dispersion angle vs frequency plotted using lines of equal sound pressure (isobars) at -6 dB and -12 dB. The nominal 35° dispersion is maintained from 16 kHz down to 800 Hz. Horizontal and vertical characteristics are identical. C4-TOP isobar diagram 10 5 0 -5 -10 -15 -20 -25 -30 20 100 1k 10k 20k C4-TOP frequency response on axis and 18° hor./vert. angles C4-TOP (2.
Technical specifications C4-TOP system data Frequency response (5 dB).................................................................. 150 Hz ... 18 kHz Max. sound pressure (1 m, free field) with P1200A ......................................... 138 dB Max. sound pressure (1 m, free field) with E-PAC ............................................. 136 dB (SPLmax peak, pink noise test signal with crest factor of 4) Input level (SPLmax) ..........................................................................
C4-SUB The C4-SUB is a compact, horn-loaded bandpass design employing a single 18" driver. It is designed for use with the C4-TOP cabinet as a part of the C4 System. The C4-SUB cabinet is constructed from marine plywood, fitted with steel handles, MAN CF4 stud plate rigging points and has an impact resistant paint finish.
For an E-PAC version 3, the configuration is set via a front panel digital rotary encoder in conjunction with an LCD. The E-PAC can drive a single C4-SUB cabinet at an output power of 300 watts. We do not recommend that two C4-SUB cabinets are driven in LO IMP mode as the 6 dB reduction in input level to the loudspeakers results in no gain in acoustical output. Stacking notes The horn chamber, which transmits frequencies ranging from approx. 70 Hz to 180 Hz, is located in the bottom half of the cabinet.
Technical specifications C4-SUB system data Frequency response (5 dB).................................................................... 50 Hz ... 150 Hz Max. sound pressure (1 m, free field) with P1200A ......................................... 133 dB Max. sound pressure (1 m, free field) with E-PAC ............................................ 131 dB (SPLmax peak, pink noise test signal with crest factor of 4) Input level (SPLmax) ..........................................................................
C7-TOP The C7-TOP is a two way horn loaded loudspeaker which provides full range coverage at very high SPLs. The constant directivity design of the coaxial horns used in the C7-TOP helps maintain the 75° x 40° dispersion down to 600Hz. Two passively coupled drivers are used - a 15 low/mid driver back loaded by a vented enclosure, and a 1.5 exit HF compression driver.
Connections 1+ 1 2+ 2 The C7-TOP cabinet is fitted with a pair of Speakon-NL4 connectors. All four pins of both connectors are wired in parallel. The C7-TOP uses the pin assignments 1+/1. Pins 2+/2 are designated to d&b C and E-Series active subwoofers. Using one connector as the input, the second connector allows for direct connection to additional loudspeakers. The C7-TOP can be supplied with EP-5 output connectors as an option.
Operation with E-PAC (only possible with E-PAC version 3 with display) To drive C7-TOP cabinets the E-PAC has to be configured to C7-TOP mode. For an E-PAC version 3, the configuration is set via a front panel digital rotary encoder in conjunction with an LCD. The CUT and HFA settings are available. The characteristics of the CUT and HFA settings are explained on the previous page under the section "C7-TOP controller module switches".
Technical specifications C7 system data Frequency response (5 dB) .................................................................... 68 Hz ... 18 kHz Max. sound pressure (1 m, free field) with P1200A ...........................................136 dB Max. sound pressure (1 m, free field) with E-PAC ..............................................134 dB (SPLmax peak, pink noise test signal with crest factor of 4) Input level (SPLmax)............................................................................
C7-SUB The C7-SUB is a bass-reflex design employing a long excursion 18" driver. The large, specially shaped reflex port enables the C7-SUB to achieve high sound pressure levels with minimal power compression and breathing effects. The C7-SUB cabinet is constructed from marine plywood, fitted with two pairs of steel handles, and has an impact resistant paint finish.
C7-SUB controller module switches C7-SUB 100Hz 100Hz switch & indicator If the 100Hz switch is selected (yellow 100Hz LED illuminated), the upper operating frequency of the system is reduced from 140 Hz to 100 Hz. This switch setting allows the C7-SUB to supplement TOP cabinets in full range mode (i.e. CUT not selected). The 100Hz mode may also be used with TOP cabinets in CUT mode to compensate for room resonances often found in the 125 Hz band.
Technical specifications C7-SUB system data Frequency response (5 dB)......................................................... 44 Hz ... 140 /100 Hz Max. sound pressure (1 m, free field) with P1200A........................................... 133 dB Max. sound pressure (1 m, free field) with E-PAC ............................................. 131 dB (SPLmax peak, pink noise test signal with crest factor of 4) Input level (SPLmax) ..............................................................................
MAX MAX is a 2-way floor monitor system and uses a 15/2 coaxial driver combination with a passive crossover. The driver design allows the use of a compact, low height cabinet. MAX can be driven actively or passively. Coaxially mounting the 2 HF and 15 LF drivers creates a very compact single driver whilst retaining the benefits of separate magnetic assemblies.
Only operate MAX loudspeakers with a d&b P1200A mainframe fitted with ampMAX or AMP-L controller modules or with an d&b E-PAC in linear configuration. As an alternative other high quality power amplifiers may be used, provided their output power does not exceed 500 watts into 8 ohms and an additional subsonic filter is used (25 Hz with 12 dB/octave minimum), otherwise there is a risk of damaging the loudspeaker components.
INPUT A AMP A 1+ 1 2+ 2 OUT A INPUT B AMP B 1+ 1 2+ 2 OUT B P1200A with ampMAX, passive mode INPUT A Active Crossover Lo Hi INPUT B AMP A 1+ 1 2+ 2 AMP B 1+ 1 2+ 2 P1200A with ampMAX, active mode OUT A OUT B Operation with P1200A and ampMAX module ampMAX is a two-channel controller module occupying both slots of a P1200A mainframe. The combination of P1200A and ampMAX allows MAX loudspeakers to be driven passively or in 2-way active mode.
LFC switch and indicator When MAX cabinets are used without an active subwoofer selecting LFC, Low Frequency Compensation, extends the low frequency response of MAX cabinets down to 65 Hz. The yellow LFC LED illuminates. In active mode only the channel A LFC switch is functional. IS/GR indicators These indicators give a three stage indication of ampMAX signal levels. − Input Signal Present (green) illuminates when the signal presented to the controller input exceeds a -36 dBu threshold value.
AMP-L module switches CUT switch and indicator Set to CUT, a high pass filter with a 130 Hz cut-off frequency is inserted in the controller signal path. The yellow CUT LED illuminates. MAX is now configured for use with d&b C-Series active subwoofers. REMOTE LO IMP 1234 DELAY ON REMOTE LO IMP ON ON 1 2 3 4 5 6 Operation with E-PAC To drive MAX cabinets the E-PAC has to be configured to LINEAR mode.
Dispersion characteristics Due to the conical coverage pattern of the coaxial driver design, the horizontal and vertical dispersion characteristics of MAX are largely identical (slight differences which do occur are attributable to the asymmetric cabinet shape). The diagram below shows dispersion angle versus frequency plotted using lines of equal sound pressure (isobars) at -6 dB and -12 dB. The nominal 60° dispersion angle is maintained from 4 to 10 kHz.
Technical specifications MAX system data, passive setup Max. sound pressure (1 m, free field) with P1200A........................................... 133 dB Max. sound pressure (1 m, free field) with E-PAC ............................................. 131 dB (SPLmax peak, pink noise test signal with crest factor of 4) Input level (SPLmax) ................................................................................................. +13 dBu Input level (100 dB-SPL / 1 m)....................................
MAX12 MAX12 is a 2-way floor monitor system and uses a 12/2 coaxial driver combination with a passive crossover. The driver design allows the use of a compact, low height cabinet. MAX12 can be driven actively or passively. Coaxially mounting the 2 HF and 12 LF drivers creates a very compact single driver whilst retaining the benefits of separate magnetic assemblies.
Only operate MAX12 loudspeakers with a d&b P1200A mainframe fitted with ampMAX or AMP-L controller modules or with an d&b E-PAC in linear configuration. As an alternative other high quality power amplifiers may be used, provided their output power does not exceed 500 watts into 8 ohms and an additional subsonic filter is used (25 Hz with 12 dB/octave minimum), otherwise there is a risk of damaging the loudspeaker components.
Operation with P1200A and ampMAX module INPUT A AMP A 1+ 1 2+ 2 OUT A INPUT B AMP B 1+ 1 2+ 2 OUT B P1200A with ampMAX, passive mode INPUT A Active Crossover Lo Hi INPUT B AMP A 1+ 1 2+ 2 OUT A AMP B 1+ 1 2+ 2 OUT B P1200A with ampMAX, active mode ampMAX is a two-channel controller module occupying both slots of a P1200A mainframe. The combination of P1200A and ampMAX allows MAX and MAX12 loudspeakers to be driven passively or in 2-way active mode.
LFC switch and indicator When MAX12 cabinets are used without an active subwoofer selecting LFC, Low Frequency Compensation, extends the low frequency response of MAX12 cabinets down to 75 Hz. The yellow LFC LED illuminates. In active mode only the channel A LFC switch is functional. IS/GR indicators These indicators give a three stage indication of ampMAX signal levels. − Input Signal Present (green) illuminates when the signal presented to the controller input exceeds a -36 dBu threshold value.
AMP-L module switches CUT switch and indicator Set to CUT, a high pass filter with a 130 Hz cut-off frequency is inserted in the controller signal path. The yellow CUT LED illuminates. MAX12 is now configured for use with d&b C-Series active subwoofers. REMOTE LO IMP 1234 DELAY ON REMOTE LO IMP ON ON 1 2 3 4 5 6 Operation with E-PAC To drive MAX12 cabinets the E-PAC has to be configured to LINEAR mode.
Dispersion characteristics Due to the conical coverage pattern of the coaxial driver design, the horizontal and vertical dispersion characteristics of MAX12 are largely identical (slight differences which do occur are attributable to the asymmetric cabinet shape). The diagram below shows dispersion angle versus frequency plotted using lines of equal sound pressure (isobars) at -6 dB and -12 dB.
Technical specifications MAX12 system data, passive setup Max. sound pressure (1 m, free field) with P1200A........................................... 132 dB Max. sound pressure (1 m, free field) with E-PAC ............................................. 130 dB (SPLmax peak, pink noise test signal with crest factor of 4) Input level (SPLmax) ................................................................................................. +13 dBu Input level (100 dB-SPL / 1 m)..................................
CI6 / CI9 CI6 and CI9 cabinets are full range, two-way bass-reflex enclosures each fitted with a 12" LF driver passively crossed over to a 1.4 HF compression driver coupled to a CD horn with 65° x 40° (CI6) or 90° x 40° (CI9) coverage pattern. The cabinets are designed to allow the horn flares to be rotated through 90° allowing greater flexibility in placement for a given dispersion. The cabinets are constructed from marine plywood and have an impact resistant paint finish.
LO IMP mode allows the E-PAC to drive two CI6/CI9 cabinets with a 6 dB reduction of input level to the speakers. The CUT and HFA settings are available on versions 2 and 3. CUT switch Set to CUT, a 120 Hz high pass filter is inserted in the controller signal path. The CI system is now configured for use with d&b C or E-series active subwoofers. HFA switch In HFA mode (High Frequency Attenuation), the HF response of the CI system is rolled off.
Technical specifications CI6 (CI9) system data Frequency response (5 dB)..................................................................... 55 Hz 18 kHz Max. sound pressure (1 m, free field) with E-PAC ...................................133 (132) dB (SPLmax peak, pink noise test signal with crest factor of 4) Input level (SPLmax) ................................................................................................. +14 dBu Input level (100 dB SPL / 1 m).......................................
CI8 The CI8 cabinet is a full range, two way bass-reflex enclosure, utilising an 8"/1" coaxial driver combination with a passive crossover. Coaxially mounting the 1" HF compression driver and 8" LF driver creates a very compact single driver whilst retaining the benefits of separate magnetic assemblies. The drivers are positioned together to utilise the combined shape and geometry of the LF cone and HF horn to create a single waveguide with a controlled, symmetrical, 85° conical dispersion.
HFA In HFA mode (High Frequency Attenuation), the HF response of the CI8 system is rolled off. The HFA circuit configures the CI8 loudspeakers to provide a natural, balanced frequency response when a unit is placed close to listeners in near field or delay use. High Frequency Attenuation begins gradually at 1 kHz, dropping by approximately 3 dB at 10 kHz.
Technical specifications CI8 system data Frequency response (5 dB)..................................................................... 70 Hz 20 kHz Max. sound pressure (1 m, free field) with E-PAC ............................................. 126 dB (SPLmax peak, pink noise test signal with crest factor of 4) Input level (SPLmax) ................................................................................................. +13 dBu Input level (100 dB SPL / 1 m)........................................
4. System operation 4.1. Setting up/stacking the loudspeakers To get the best out of any high quality loudspeaker system it must be properly set up. Care and attention needs to be paid to the position of loudspeaker cabinets relative to each other and also to how they are angled and aimed towards the audience. 4.1.1. Vertical aiming The aiming of the loudspeaker in the vertical plane is responsible for the coverage all the way from the stage to the furthest listening point.
Vertically stacking the cabinets, rather than horizontally arraying them is particularly useful in deep rooms where more than one cabinet has to be used because a single cabinet has insufficient throw for the level needed at the back of the room. This helps reduce interference in the horizontal plane and gives more vertical directivity control. 4.2. Wiring In order to keep losses in tonality and power low the length of cable run between mainframe and loudspeaker should be kept as short as possible.
4.3. Using the E-PAC MIX IN The E-PAC is a single channel amplifier controller, the rear panel connectors allow for use in different configurations. The illustration below shows two E-PACs driving E3 loudspeakers from a stereo source, a third E-PAC drives an E12-SUB in mono. The left and right signals are summed to mono using the MIX input on the third E-PAC. Please note that the resultant output will be 3 db higher (see section 2.10.3 on page 31) .
4.4. Level setting of mid-high and SUB systems With equal numbers of mid-high cabinets and corresponding active subwoofers the input gains of TOP and SUB controller will normally be set to the same level. This setting gives a correct sound balance and matches the characteristics of the active crossover filters in the controller modules.
5. EU declaration of conformity (CE symbol) 5.1.
5.2. EU conformity of the E-PAC This declaration applies to the E-PAC power amplifier controller manufactured by d&b audiotechnik AG. − E-PAC Z2510 all versions All production versions of type E-PAC starting from version Z2510.000.01 are included, provided they correspond to the original technical version and have not been subject to any later design or electromechanical modifications.
6. Publications list A number of publications with supplementary information on our products are available. These publications are listed below along with their respective catalogue numbers. If you are interested in receiving any of the listed publications then simply fill in the order form on the next page of the User Manual, send it to d&b and we will send you the requested information by return of post. Title Cat. No. TI 212 A1/P1200A Basic Remote D5212.E.
E-PAC (Version 3 with Display) User Manual (6.0E) Insert this page into an envelope or fax machine and send it to: d&b audiotechnik AG Eugen-Adolff-Straße 134 D-71522 Backnang Germany Fax +49-7191-95 00 00 My address: Please send me the following information: Title I think the manual is informative I think the manual is well laid out yes, very Number no Suggestions for improvement or remarks on manual and products: (6.
d&b audiotechnik AG, Eugen-Adolff-Str.
Appendix 1: E-PAC Version 3, Setting Sheet Notes: The order of the list replicates to the Menu structure of the E-PAC. Only user definable parameters are listed, with the exception of those in the general section, the additional (*) fields and the settings in the Load Monitoring section. General Editor: Location: Serial-No.: Z2510... Date: Firmware V: 3. Amp-ID:* Level: (-57.5 dB ...
d&b audiotechnik AG, Eugen-Adolff-Str.
