CONTENTS < > PRINT APPLICATIONS GUIDE CONTENTS (ENGLISH) 1 IMPORTANT SAFETY INFORMATION 2 UNPACKING THE DX1 3 WARRANTY 4 INTRODUCTION 5 FRONT PANEL FUNCTIONS 6 REAR PANEL FUNCTIONS 7 OPERATING THE DX1 8 USING FACTORY PRESETS 9 CONFIGURING THE DX1 MANUALLY 10 CROSSOVER MODES 10.1 Filter slopes 10.2 Time alignment 11 BLOCK DIAGRAMS 12 OUTPUT LIMITERS 13 FUNCTION SCREENS 13.1 Parametric equaliser screen 13.2 High and lowpass filter screens 13.3 Limiter screen 13.4 Delay screen 13.5 Polarity screen 13.
> PRINT APPLICATIONS GUIDE GUIDES This equipment conforms to the requirements of the EMC Directive 89/336/EEC, amended by 92/31/EEC and 93/68/EEC and the requirements of the Low Voltage Directive 73/23/EEC, amended by 93/68/EEC. Standards Applied EMC Emission Immunity Electrical Safety 1 EN55103-1:1996 EN55103-2:1996 EN60065:1993 IMPORTANT SAFETY INFORMATION Do not remove Covers. No user serviceable parts inside, refer servicing to qualified service personnel. This equipment must be earthed.
> PRINT APPLICATIONS GUIDE GUIDES Thank you for purchasing the Martin Audio DX1 Loudspeaker Management System. The DX1 is designed to compliment all our current loudspeaker products that require or benefit from the use of a system controller. 2 UNPACKING THE DX1 Each Martin Audio DX1 controller is built, tested and thoroughly inspected to the highest standard before leaving the factory.
> PRINT APPLICATIONS GUIDE GUIDES INTRODUCTION The DX1 is a compact and powerful DSP based audio-processing unit ideally suited for live applications and fixed installations. To achieve this the DX1 has 2 inputs and 6 outputs, which can be configured in 5 basic modes, 2 x 2 way, 2 x 3 way, 4 way, 5 way and 6 way crossover. Each input has adjustable gain and delay, each output consists of a high and lowpass filter, 5 bands of parametric equalisation, limiter, delay (adjustable in 2.
> PRINT APPLICATIONS GUIDE GUIDES FRONT PANEL FUNCTIONS 5 4 'Q' FREQ 1 8 MENU ENTER BYPASS QUIT 9 6 3 DX1 10 11 12 GAIN Digital Speaker Management System 7 2 1. LCD Display - Shows menu options, output information and various parameters being adjusted. 2. Gain Keys - Two input and six-output GAIN keys allow instant access to the gain screen for each channel. Pressing a second time selects the last function edited. 3.
> PRINT REAR PANEL FUNCTIONS POWER 1. 2. 3. 4. 5. MAINS IN 90V - 240V AC 50 - 60Hz 30W DO NOT EXPOSE TO RAIN OR MOISTURE EXTERNAL 1 GUIDES APPLICATIONS GUIDE 2 CAUTION FOR CONTINUED PROTECTION AGAINST FIRE REPLACE ONLY WITH SAME TYPE 11A, 250V FUSE 3 XLR PIN P1=SHIELD P2=HOT P3=COLD WARNING THIS EQUIPMENT MUST BE EARTHED OUTPUT 6 OUTPUT 5 OUTPUT 4 OUTPUT 3 OUTPUT 2 OUTPUT 1 INPUT B INPUT A CAUTION SHOCK HAZARD DO NOT REMOVE COVERS. AVIS RISQUE DE CHOC ELECTRIQUE, NE PAS OUVRIR.
> PRINT APPLICATIONS GUIDE GUIDES OPERATING THE DX1 The DX1 can be used in two ways: 1. Using pre loaded factory presets to configure the DX1 for use with Martin Audio products. 2. As a generic digital loudspeaker management system. Note: this requires the user to configure the DX1 manually, i.e. by entering crossover information via the controls on the front panel. The DX1 is equipped with 19 user memories for storing these configurations.
> PRINT APPLICATIONS GUIDE GUIDES Configuring a factory preset Once a preset has been loaded there are three user configurable parameters. Note: all other parameters accessed via the GAIN buttons, such as crossover points and parametric equalisation are locked and cannot be altered by the user. 1. 2. 3. Output gain trim: The gain of each output channel can be adjusted by plus or minus 6dB. This is intended for normalising power amplifiers of differing gain.
> PRINT APPLICATIONS GUIDE GUIDES CONFIGURING THE DX1 MANUALLY Introduction This section describes how to use the DX1 as a generic loudspeaker management system. We recommend that you read the whole of the manual before using the DX1 in this manner. To simplify set-up of the DX1, 5 crossover modes are menu selectable. These all have parametric equalisers, high and low pass filters, limiters, gain and delay.
< > PRINT APPLICATIONS GUIDE GUIDES 10.2 Time Alignment A further advantage of the DX1 over conventional products is the provision of an independently adjustable delay section for each output. This allows the true arrival time from multiple drivers to precisely aligned rather than relying on the compromise 'phase adjust' approach. Delay time is adjustable in 2.6µs steps (1mm). To convert from units of time (i.e. milliseconds) to units of distance use the following formula: 1 millisecond = 343mm (1.
< 11 > PRINT APPLICATIONS GUIDE GUIDES BLOCK DIAGRAMS DX1 2 X 2 WAY + SUM A+B CROSSOVER DX1 2 X 3 WAY CROSSOVER 11 Martin Audio – DX1 Speaker Management System ENGLISH CONTENTS
< > PRINT APPLICATIONS GUIDE GUIDES DX1 4 WAY CROSSOVER + 2 AUX DX1 5 WAY CROSSOVER + 1 AUX DX1 6 WAY CROSSOVER 12 Martin Audio – DX1 Speaker Management System ENGLISH CONTENTS
< 12 > PRINT APPLICATIONS GUIDE GUIDES OUTPUT LIMITERS High performance digital limiters are provided for each output with control over attack time, release time and threshold level parameters (see page 15). This level of control allows the user to balance the required subjective quality of the limiter against the driver protection requirements.
< > PRINT APPLICATIONS GUIDE 13 FUNCTION SCREENS 13.1 Parametric equaliser screen GUIDES OP1+4 Low PEQ:1 ◊ 1K00Hz Q=3.0 0.0dB All modes feature 5 bands of fully flexible parametric equalisation per output, with all sections selectable to Low or High frequency shelving response. Each parametric section can be positioned at a frequency from 20Hz to 20kHz and features a wide range of 'Qs’ to produce response curves ranging from broad to notch. The gain control ranges from +15dB to -30dB in 0.
< 13.2 > PRINT APPLICATIONS GUIDE GUIDES High and lowpass filter screens OP1+4 <10Hz Low HPF Bessel 24dB Each output has an independent high pass filter and an independent low pass filter. Both filters have a range of selectable slopes which are Bessel 12dB, 18dB and 24dB, Butterworth 12dB, 18dB and 24dB, and Linkwitz Riley 24dB. Highpass filters have a range of <10Hz (through) to 16kHz and Lowpass filters have a range of 22kHz (through) to 59Hz in 1/36 octave steps.
< 13.4 > PRINT APPLICATIONS GUIDE GUIDES Delay screen OP1 Delay Low = 1.003mS Each output has an independent delay time control. This can be adjusted in 2.6µS steps or in 1ms steps giving complete control over driver time alignment. Input delay (base delay) is adjustable in 1ms steps only. To adjust delay settings: Use the FREQ control for coarse control. (1ms steps) Use the Q control for fine control. (2.6µS steps) 13.
< 14 > PRINT APPLICATIONS GUIDE GUIDES CROSSOVER SUB-MENU Press MENU and select crossover Sub-menu using the BACK, NEXT and ENTER keys. Three options are available in this sub-menu which are: Load a crossover Loads a factory preset or crossover stored in a user memory. Note: the unit ships with all user memories empty. It is up to the user to program these memories as the application requires.
< 16 > PRINT APPLICATIONS GUIDE GUIDES SECURITY SUB-MENU Press MENU and select Security Sub-menu using the BACK, NEXT and ENTER keys. Press ENTER to load one of the four selections (See below). A four-digit security code will be asked for. This can be entered by using the FREQ control, to select a character, and the BACK and NEXT keys to move to the next character. Alternatively, the GAIN keys can be used to enter a code by pressing any combination of the eight buttons.
< 17 > PRINT APPLICATIONS GUIDE GUIDES SYSTEM SUB-MENU Press MENU and select System Sub-menu using the BACK, NEXT and ENTER keys. Several options are available in this sub-menu which are: System Status: Displays unit information including software version and temperature. Curr. Temp. = current temperature in degrees Celsius. Max1. Temp. = maximum temperature this session. Max2. Temp. = maximum temperature ever reached. LCD Contrast: Adjusts the LCD contrast from 0 to 100.
< 20 > PRINT APPLICATIONS GUIDE GUIDES EQUALISATION CURVES Frequency = 1kHz, Q=4.0 Parametric filter gain curves. Frequency (Hz) Frequency = 1kHz, Gain = +15dB Parametric filter 'Q' curves. Frequency (Hz) Lowshelf @ 100Hz Highshelf @ 5kHz Frequency (Hz) Parametric filter High and Low shelf curves.
< > PRINT APPLICATIONS GUIDE GUIDES a = Bessel 12dB (50Hz) b = Butterworth 12dB (50Hz) c = Bessel 24dB (200Hz) d = Butterworth 24dB (200Hz) e = Linkwitz-Riley 24dB (500Hz) Highpass filter curves. Frequency (Hz) a = Linkwitz-Riley 24dB (1kHz) b = Butterworth 24dB (2kHz) c = Bessel 24dB (2kHz) d = Butterworth 12dB (5kHz) e = Bessel 12dB (5kHz) Lowpass filter curves. Frequency (Hz) Frequency = 1kHz, Q=128, Gain = -30dB Frequency (Hz) Parametric filter with high 'Q' to achieve notch response.
< > 21 PRINT APPLICATIONS GUIDE GUIDES TECHNICAL SPECIFICATIONS Inputs Two electronically balanced. > 10k ohms. >65dB 50Hz - 10kHz. Impedance CMRR Outputs Source Imp Min. Load Max. Level Six electronically balanced. < 60ohms. 600ohm. +20dBm into 600 ohm load. Frequency Resp. Dynamic Range Distortion Maximum Delay Output gain Input gain ±0.5dB 20Hz - 20kHz. >110dB 20Hz -20kHz. Unwtd. < 0.02% @ 1kHz, +18dBm. 650 ms. (Increment 2.6 µs) adjustable +15dB to -40dB in 0.1dB steps and mute.
< 22 > PRINT APPLICATIONS GUIDE GUIDES OPERATING NOTES What happens on switch on? As mentioned previously the DX1 can be programmed to go through a ‘Wake up’ sequence which ramps up the output level over a set time period. The default is a wake up time of 10 seconds. The DX1 remembers exactly how it was set up before it was switched off. This includes which preset or user memory was loaded and the associated gain, delay and limiter levels etc.
< 23 > PRINT APPLICATIONS GUIDE GUIDES APPENDICES Appendix 1 Limiter threshold in dBu to Vrms lookup table. dBu Vrms dBu Vrms +22 9.75 +5 1.38 +21 8.69 +4 1.23 +20 7.75 +3 1.09 +19 6.90 +2 0.98 +18 6.15 +1 0.87 +17 5.48 0 0.77 +16 4.89 -1 0.69 +15 4.36 -2 0.62 +14 3.88 -3 0.55 +13 3.46 -4 0.49 +12 3.08 -5 0.44 +11 2.75 -6 0.39 +10 2.45 -7 0.35 +9 2.18 -8 0.31 +8 1.95 -9 0.27 +7 1.73 -10 0.24 +6 1.55 -11 0.22 Calculation: Vrms = 0.
< > PRINT APPLICATIONS GUIDE GUIDES Appendix 2 Below are the default crossover settings and names for all configurations. Note: these values are intended as arbitrary starting points and do not correspond to any of the values in the factory presets. X-over Output 1 Output 2 Output 3 Output 4 Output 5 Output 6 2x2 way+Ms Low High Low High Msub Aux 120Hz – 1k82Hz 1k82Hz – 22kHz 120Hz – 1k82Hz Low Mid High 22.
< > PRINT APPLICATIONS GUIDE GUIDES ENGLISH CONTENTS Appendix 3 Factory Preset File version 1.
CONTENTS < > PRINT DX1 APPLICATIONS GUIDE GUIDES Speaker Management System Please Click here to return to main menu Please Click here to visit our website MARTIN AUDIO L O N D O N The Martin Experience Century Point, Halifax Road, Cressex Business Park, High Wycombe, Buckinghamshire HP12 3SL, England. Telephone: +44 (0)1494 535312 Facsimile: +44 (0)1494 438669 Web: www.martin-audio.com E-mail: info@martin-audio.
CONTENTS < > PRINT APPLICATIONS GUIDE DX1 GUIDES Speaker Management System User’s Guide ENGLISH MARTIN AUDIO L O N D O N The Martin Experience
