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User's Manual
3 WAY STEREO
MAXIDRIVE3.4 DIGITAL CROSSOVER
R
LTO
www.altoproaudio.com
Version 2.4 September 2005
English
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Fuse SAFETY RELATED SYMBOLS To prevent fire and damage to the product, use only the recommended fuse type as indicated in this CAUTION manual. Do not short-circuit the fuse holder. Before RISK OF ELECTRIC SHOCK DO NOT OPEN replacing the fuse, make sure that the product is OFF and disconnected from the AC outlet. This symbol, wherever used, alerts you to the pre- Protective Ground sence of un-insulated and dangerous voltages with- in the product enclosure. These are voltages that Before turning t
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PREFACE Dear Customer: Thanks for choosing MAXIDRIVE3.43-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. The LTO line presents unparalleled analogue and digital products made b
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TABLE OF CONTENTS 1. INTRODUCTION .....................................................................................................................................4 2. FEATURES .............................................................................................................................................4 3. CONTROL ELEMENTS .........................................................................................................................4 3.1 The Front Panel 3.2 The Rear
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1. INTRODUCTION Your MAXIDRIVE3.4 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 are worth much more than its price: you can set the input and output routing con- figuration only through recalling one of the Presets included in the internal memory. 2. FEATURES Single rack unit Delay lines up to 2.5s
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7.Memory Card Slot The Slot allows you to insert the Memory Card which is very useful for safe storage of PRESETS and for their transfer from one MAXIDRIVE3.4 to another. 8.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. 9.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. 10.Input Level LEDs The LEDs are used to in
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16.RS485 OUT This is the standard serial communication interface port. It allows outgoing communication between a MAXI- DRIVE3.4 and PC or other MAXIDRIVE3.4 units. The RS485 interface is very suitable for remote control over long distances (difficult with RS232 standard ports) and daisy-chaining several MAXIDRIVE3.4. 17.RS485 IN The function of the RS485 IN port is opposite to RS485 OUT. It allows incoming communication between a MAXIDRIVE3.4 and PC or other MAXIDRIVE3.4 units. The RS485 interf
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And the system Will enter into default status, showing the main operating information on the display. A13 B 2 4 S 5 6 2 F 2x 2W+ 2MAX Set all the MAXIDRIVE3.4 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: Load Preset (example) 3 F 2x 3W Use the DIAL to find the necessary Factory PRESET (indicated by the letter F)
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INA GA I N INA &B GA I N 0 .0dB 0 .0dB 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. INA GA I N INA &B GA I N - 2 .5dB + 6 .0dB Then use the PREV and NEXT keys to access to the INB Gain page (if there is one, this will depend on the con- figuration 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 followin
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Numbers 1, 2, 3, 4, 5 and 6 indicate the respective outputs. In the example: The signal connected to InputA1 is assigned to outputs and3. The signal connected to InputB2 is assigned to outputs and4. TheSum of the signal on inputsAB and is assigned to outputs56 and . The system is therefore configured as shown in the following diagram. 2-WAY STEREO + 2 MONO AUX (2X2W + 2MAX) A13 B24 S56 IN OUT LEFT HIGH LEFT A 1 OUT HIGH RIGHT 2 OUT LOW LEFT 3 IN A+B OUT LOW RIGHT 4 OUT MONO AUX L +R 5 IN OUT RIG
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4.8 PRESET Modifications M A13 B 2 4 S 5 6 2 U 2x 2W+ 2MAX 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. The indication disappears as soon as the PRESET is saved or as soon as a new PRESET is loaded (inclu
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There are 3 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. User PRESETS are internal memory
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Note: In the example, Factory PRESET #3, named "2x3W" has been loaded: Its system configuration is Input A signal assigned to outputs 1, 3 and 5; Input B signal assigned to outputs 2, 4 and 6. Loading a PRESET, a PRESET Change command is also automatically sent to the serial ports and can be used to automatically load a PRESET with the same number to any other MAXIDRIVE3.4 units connected and enabled (Refer to UTILITY menu - Comm. Setup submenu - PRESET Change RX option). 5.1.2 Store & Naming PR
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Pr e s et Nam i n + MA X M 2W 2 5.1.3 Dump Out PRESET Use this menu page to download a PRESET via the serial ports. It is also used to immediately "copy" the settings of the various PRESETS of a MAXIDRIVE3.4 to another MAXIDRIVE3.4. Dum Ou t Pr e s e t x 2W + 2 MA X 2 2 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 immediat
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Ignore the data received via the serial ports. Accept the data received via the serial ports. In c omi n g Dum p In c omi n g Dum p Ig no r e Ac ce p t 5.2.Delay Menu Use this menu to work on the systems delay lines. menu Input Delay Parameters DELAY 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
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Output Delay only delays the signal of a specific output. Also called Channel Delay, output delay is mainly used to compensate for the distance between different blocks of the same sound system (for example clusters) or to correct internal alignment of a speaker enclosure components. 5.2.1 Input Delay Use this menu page to adjust the delay lines of Input A, Input B and SUM. Input Delay ADC IN A The values can be set in the following ranges: INPUT DELAY INA DELAY unit range step 77mS m 0.0 ~ 900.
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The values can be set in the following ranges: OUTPUT DELAY 0P1 DE LAY unit range step 292 u S m 0.0 ~ 100.0 0.5 mm 0 ~ 100000 7 0~291 1 ms us 0 ~ 291271 21 The values can be set in the following ranges: OUTPUT DELAY OUTPUT OUTPUT DELA DELAY Y Loudspeaker Delayed Virtual Delayed Virtual OP1 DELAY= OUTPUT 1 Components Alignment #1 Alignment #2 HIGH 0ms 18ms(6 5m) 14ms(5m) 4ms OUTPUT 3 OP3 DELAY= LOW 4ms 5.3 Edit menu The values can be set in the following ranges: menu Input Gain Parameters EDIT I
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Input 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. IN A GA I N -2 . 5dB 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. an up-front distortion free signal, feed a s
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b. Centre Frequency / Cutoff Frequency Allows to choose the centre frequency of the Peaking curve and Notch filter, or the cutoff frequency of Shelv- ing curves. IN A EQ1 P e a k 2k 0 0 1. 0 -5 . 0 Notch Peaking Low Shelving High Shelving c. Bandwidth Allows to choose the width in octaves of the Peaking or Notch type curve. It s not used with Shelving curves. A IN EQ1 P e a k 2k 0 0 1. 0 -5 . 0 Peaking Notch d. Gain Allows to control the boost or cut of the selected frequencies. It's not used wi
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The values can be set in the following ranges: ~ ~ ~ 5.3.3 Xover Low-pass and high-pass filters. Made up of a combination of a low-pass filter and high-pass filter, the crossover allows to divide the audio signal into segments that can be used by the individual section of a sound system (for example High, Mid & Low). Xover 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. O P 1 L P F T h r u OP 1 H P F T h r
