MAXIDRIVE3.4 COMPACT User's Manual 3 WAY STEREO DIGITAL CROSSOVER R LTO www.altoproaudio.com Version 1.2 August.
Fuse SAFETY RELATED SYMBOLS To prevent fire and damage to the product, use only the recommended fuse type as indicated in this manual. Do not short-circuit the fuse holder. Before replacing the fuse, make sure that the product is OFF and disconnected from the AC outlet. CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN This symbol, wherever used, alerts you to the presence of un-insulated and dangerous voltages within the product enclosure.
PREFACE Dear Customer: Thanks for choosing MAXIDRIVE3.4 COMPACT 3 - Way Stereo Digital Crossover and thanks for choosing one of the results of LTO AUDIO TEAM job and researches. For our LTO AUDIO TEAM, music and sound are more than a job...are first of all passion and let us say our obsession! We have been designing professional audio products for a long time in cooperation with some of the major brands in the world in the audio field.
TABLE OF CONTENTS 1. INTRODUCTION .....................................................................................................................................4 2. FEATURES .............................................................................................................................................4 3. CONTROL ELEMENTS .........................................................................................................................4 3.1 The Front Panel 3.2 The Rear Panel 4.
1. INTRODUCTION Your MAXIDRIVE3.4 COMPACT is a 3-Way Stereo Digital Crossover and it is a powerful versatile signal processor. The apparatus will provide 3, 4, 5 or 6-way mono X-over with 6 outputs. Thanks to the use of selected and expensive components, the performances of MAXIDRIVE3.4 COMPACT are worth much more than its price: you can set the input and output routing configuration only through recalling one of the Presets included in the internal memory. 2.
7.ENTER key The key allows you to access to the selected editing page. Pressing this key, you can edit and confirm the required value of parameter. 8.ESC key The key allows you to exit the selected editing page. It also used to reject the value to enter and return to the stored value. 9.Input Level LED Meters The LEDs are used to indicate the level of input A/B.
15.RS485 IN The function of the RS485 IN port is opposite to RS485 OUT. It allows incoming communication between a MAXIDRIVE3.4 COMPACT and PC or other MAXIDRIVE3.4 COMPACT units. The RS485 interface is very suitable for remote control over long distances (Difficult with RS232 standard ports) and for daisy-chaining several MAXIDRIVE3.4 COMPACT. 16.RS 232 Out This is the serial communication interface port. It allows incoming and outgoing communication between a MAXIDRIVE3.
Set all the MAXIDRIVE3.4 COMPACT outputs in MUTE status (LEDs lit) by pressing the relative keys. Load the Factory PRESET containing the configuration you've found. Press the MODE Key until the PRESET menu LED lights up. The display will show the Load PRESET page: L o a d P r e s e t 3 F 2 x 3W (example) Use the DIAL to find the necessary Factory PRESET (indicated by the letter F). Check that if, among the PRESETS available, there are already some optimised for the specific speaker enclosures being used.
Use the DIAL to change the gain value and watch the level of the signal on the LED ladders until the ideal values are reached. I NA GA I N I NA&B - 2 . 5 dB GA I N + 6 . 0 dB Then use the PREV and NEXT keys to access to the INB Gain page (if there is one, this will depend on the configuration and the other utilities loaded in the memory). Repeat the settings as explained above. 4.3 First Setup At this point, the first custom setup can be prepared.
The Sum of the signal on inputs A and B is assigned to outputs 5 and 6. The system is therefore configured as shown in the following diagram. A13 B24 S56 LEFT 2-WAY STEREO + 2 MONO AUX (2X2W + 2MAX) IN A IN A+B RIGHT IN B OUT 1 HIGH LEFT OUT 2 HIGH RIGHT OUT 3 LOW LEFT OUT 4 LOW RIGHT OUT 5 MONO AUX L +R OUT 6 MONO AUX L +R 4.5 Number of PRESETS A 1 3 B24 S 5 6 2 F 2 x 2W+ 2 MAX 10 Factory PRESETS and 64 User PRESETS. 4.
4.8 PRESET Modifications M A 1 3 B24 S 5 6 2 U 2 x 2W+ 2 MAX This indicates that the value of one or more parameters has been temporarily modified with respect to the stored in the PRESET shown. Practically speaking, this indication means that the changes made to the PRESET have not been stored. Note: once it has been enabled, the indication remains even if the "original" values are reset manually.
There are 2 distinct categories of PRESETS: Factory PRESETS Factory-programmed storage. Factory PRESETS can be used normally, temporarily modified, but can't be cancelled, overwritten or permanently modified. Factory PRESETS contain some specific settings for certain types of enclosures and all the system's usable configurations. For this reason they're the ideal starting point for creating custom PRESETS. User PRESETS Stored data that can be programmed by users.
5.1.2 Store & Naming PRESET Use this menu to create new PRESETS, i.e. to save all the current system settings. S t o r e P r e s e t 2 U 2 x 2W+ 2 MAX To save a PRESET: Use DIAL to reach the memory area in which the PRESET is to be saved. Note: In this procedure, the Factory PRESET areas aren't available, since the Factory PRESETS can not be permanently remember that it is possible to load a Factory PRESET, modified.
D um Ou t P r e s e t 2 U 2 x 2 W+ 2 MA X To download a PRESET: Use DIAL to reach the required PRESET. Press ENTER. Note: The menu page remains unchanged to allow other PRESETS to be dumped. All the Preset s data (name, configuration, parameter values, etc.) are immediately transmitted to the units connected to the serial ports (other MAXIDRIVE3.4 COMPACT, computers, etc.). Note: In order for the transfer to have effect, the receiving units must be able to identify and accept Incoming Dump operations.
5.2.Delay Menu Use this menu to work on the systems delay lines. menu DELAY Input Delay Parameters Output Delay Parameters Parameters In these pages, the number of the parameters and how they are presented varies according to the configuration of the PRESET and according to Ganging and Units settings (UTILITY menu). In fact, these pages only show the parameters that can actually be used, in the most suitable form of editing.
5.2.1 Input Delay Use this menu page to adjust the delay lines of Input A, Input B and SUM. I n p u t D e l a y IN A ADC The values can be set in the following ranges: I NA INPUT DELAY D E L AY 7 7 mS unit range step m 0.0 ~ 900.0 0.5 mm 0 ~ 900000 7 ms 0 ~ 2621 1 us 0 ~ 2621438 21 The measurement unit can be chosen with the function Delay Unit (UTILITY menu - Units submenu). 5.2.2 Output Delay Use this menu page to adjust the delay lines of outputs 1, 2, 3, 4, 5, and 6.
The values can be set in the following ranges: 0P1 OUTPUT DELAY D E LAY 2 9 2 uS unit range step m 0.0 ~ 100.0 0.5 mm 0 ~ 100000 7 ms 0 ~ 291 1 us 0 ~ 291271 21 The values can be set in the following ranges: OUTPUT DELAY OUTPUT 1 HIGH OUTPUT DELAY Loudspeaker Components OP1 DELAY= 0ms Delayed Virtual Alignment #1 Delayed Virtual Alignment #2 18ms(6 5m) 4ms 14ms(5m) OUTPUT 3 LOW OP3 DELAY= 4ms 5.
5.3.1 Input Gain Input gain control. I n p u t Ga i n Allows to adjust the amplification of the signal fed in through Inputs A and B. Editing values are in the range +6dB ~ -30dB, with 0.5dB steps. I NA GA I N - 2 . 5 d B Note: Setting the input signal of a digital unit is particularly important, much more than on an analog unit, as any saturation of the A/D converter due to an excessively high input signal causes a typical particularly distinct noise. To achieve a good signal/noise ratio, i.e.
Each equalizer has 5 pages (one for each filter), showing the name of the input it affects and the number of the filter. I NA 2 k 0 0 EQ1 1 . 0 Pe a k - 5 . 0 The following editable parameters are available for each filter: a. Type of filter Allows to choose among Peaking, Low or High Shelving with a slope of 6 or 12 dB per octave and Notch filter. I NA 2 k 0 0 Peaking EQ1 1 . 0 Low Shelving Pe a k - 5 . 0 High Shelving Notch b.
Notch Peaking d. Gain Allows to control the boost or cut of the selected frequencies. It's not used with the Notch Filter, which has a fixed cut. I NA 2 k 0 0 EQ1 1 . 0 Pe a k - 5 . 0 Low Shelving Peaking High Shelving The values can be set in the following ranges: ~ ~ ~ 5.3.4 Xover Low-pass and high-pass filters.
Each Xover has 2 slightly different pages (one for each filter), where the name of the output it affects and the type of filter are shown. L PF OP1 1 k 0 0 H z H PF OP1 1 k 0 0 H z T h r u 0 Output 1 - Low Pass Filter T h r u Output 1 - High Pass Filter Low Pass Filter The low-pass filter allows all the frequencies below a specific frequency to pass, whereas it cuts all the frequencies above it.
Phase Allows fine control (in 5 steps) of the signal's phase. The effect of this control is summed with that of the Output Polarity function (0 ~ 180 ). In this way it's possible to adjust the phase of each individual output with 5 steps through a full 360 . Note: this control is only in the Low-Pass Filter window.
5.3.6 Output Gain Output level control Allows to adjust the signal level of each individual output. Ou t pu t Ga i n Editing values are between +6dB ~ -30dB, with 0.5dB steps. OP1 GA I N - 6 . 5d B Note: The level of each output is shown by the respective OUTPUT LEVEL LED ladder. To avoid distortion, don't let the red CLIP LED light up. As automatic protection, you can also enable the LIMITER (EDIT menu) on the outputs that require it.
b. Reaction times Allows to choose between 3 types of Limiter reaction speed. In fact, these are attack and release times that are optimised so that the Limiter reacts more or less rapidly when the signal exceeds or drops below the threshold: Fast Normal Slow short times, suited to rapid Limiter operation. Normally more suited to outputs dedicated to high frequencies. intermediate times, suited to the majority of applications.
menu Preset Change RX Comm.Setup UTILITY ID Select Ganging Input Ganging Output Ganging Units Delay Unit Lim. Thresh. Unit Temperature Unit Misc. Setup Input Select Output Meters Temperature Wake Up LCD Contrast Lock Lock 5.4.1 COMM. SETUP SUBMENU Preset Change RX Comm. Setup Preset ID Change Select RX This submenu allows access to the setting of communication with other units via the serial ports.
The PRESET Change command is completely identical to MIDI Program Change: the transmitting unit sends an instruction containing a number of PRESETS to load; the receiving units (if they are able to accept the command) each loads into its own memory the PRESET with the corresponding number. This means that, in a chain of MAXIDRIVE3.
IMPORTANT: Precisely for its characteristics, the Ganging function affects the way in which the relative parameters audio are edited or represented: As soon as Inputs and/or Outputs are ganged, the various menu pages only show the values that can actually be used. This however doesn't mean that the values change immediately. On the contrary, the values remain unchanged (Even if not shown) until new values are entered.
5.4.3 UNITS SUBMENU Units Delay Unit Lim. Thresh. Unit Temperature Unit Used this submenu to choose the measurement units to be used with certain functions. Un i t s a. Delay Unit Used to set the measurement units in which Delays are expressed (DELAY menu). The options include: m = meters - mm = millimeters - ms = milliseconds - ms = microseconds Measurement units for Input Delay De l a y I n ms Measurement units for Output Delay Un i t Ou t De l a y I n m u s Un i t Ou t mm b. Lim. Thresh.
Use this submenu to set a series of system options. M i s c . S e t u p b. Output Meters Used to decide whether to display the outputs signal before or after MUTE.
e. LCD Contrast Allows to adjust the Display contrast. The values are in the following range: 0 (minimum contrast) ~ 32 (maximum contrast). LCD Co n t r a s t 2 6 5.4.5 LOCK SUBMENU Used to enable or disable the protection of the system against accidental or unauthorized changes. Lock Lock Lo ck This function is very useful whenever even temporary changes or tampering with the settings stored in the system must be prevented.
LOCK P a s swo r d P a r t i a l [ 1 2 3 4 ] LOCK P a s swo r d P a r t i a l [ B I RD ] After entering the password, press ENTER. Note: Confirmation is only accepted if the cursor is positioned on one of the passwords four characters. This allows to avoid accidental enabling, without having seen the password. Protection is enabled and the system takes up default status. How to disable the protection If the protection is enabled, when the system is in default status (i.e.
6. CONNECTIONS The following diagrams show the schemes of the recommended cables and some connection examples referred to various system configurations.
7. APPLICATION The following diagrams show the MAXIDRIVE3.4 COMPACT's various system configurations, as if to say, the various input and output hardware combinations. 7.1.
7.2 Organization The following examples will help you well use and connect the unit. a.
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e. Communications: PC & one or more MAXIDRIVE3.4 COMPACT connection to / from RS232 Serial Port MAXIDRIVE3.
8. TECHNICAL SPECIFICATIONS INPUT section Connectors Nominal input sensitivity Input Impedance Maximum Input Level Input Gain 2 x COMBO 0 dB (0.775 V) 30kOhm, electronically balanced +20dBu -30 / +6 dB variable in 0.
9. WARRANTY 1. WARRANTY REGISTRATION CARD To obtain Warranty Service, the buyer should first fill out and return the enclosed Warranty Registration Card within 10 days of the Purchase Date. All the information presented in this Warranty Registration Card gives the manufacturer a better understanding of the sales status, so as to purport a more effective and efficient after-sales warranty service.
SEIKAKU TECHNICAL GROUP LIMITED No. 1, Lane 17, Sec. 2, Han Shi West Road, Taichung 40151, Taiwan http://www.altoproaudio.com Tel: 886-4-22313737 email: alto@altoproaudio.com Fax: 886-4-22346757 All rights reserved to ALTO. All features and content might be changed without prior notice. Any photocopy, translation, or reproduction of part of this manual without written permission is forbidden. Copyright c 2005 SEIKAKU GROUP NF 01630 -1.