Alto 3.4 User Manual
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Alto 3.4 User Manual

Alto maxidrive3.4 3 way stereo digital crossover user's manual
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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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Summary of Contents for Alto 3.4

  • Page 1 User's Manual 3 WAY STEREO MAXIDRIVE3.4 DIGITAL CROSSOVER www.altoproaudio.com Version 2.4 September 2005 English...

  • Page 2: Safety Related Symbols

    SAFETY RELATED SYMBOLS CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN This symbol, wherever used, alerts you to the pre- sence of un-insulated and dangerous voltages with- in the product enclosure. These are voltages that may be sufficient to constitute the risk of electric shock or death.
  • Page 3 PREFACE Dear Customer: Thanks for choosing MAXIDRIVE3.4 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.

  • Page 4: Table Of Contents

    TABLE OF CONTENTS 1. INTRODUCTION ... 4 2. FEATURES ...4 3. CONTROL ELEMENTS ...4 3.1 The Front Panel 3.2 The Rear Panel 4. GETTING STARTED ... 4.1 Configuration of The System 4.2 Adjust The Input Signal 4.3 First Setup 4.4 System Configuration 4.5 Number of Presets 4.6 Type of Preset 4.7 Name of The Preset...

  • Page 5: Introduction

    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.

  • Page 6: Enter Key

    7.Memory Card Slot The Slot allows you to insert the Memory Card which is very useful for safe storage of PRESETS and for transfer from one MAXIDRIVE3.4 to another. 8.ENTER key The key allows you to access to the selected editing value of parameter.

  • Page 7: Getting Started

    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.

  • Page 8: Adjust The Input Signal

    And the system Will enter into default status, showing the main operating information on the display. Set all the MAXIDRIVE3.4 outputs in Load the Factory PRESET Press the MODE Key until the The display will show the Load PRESET Use the DIAL to find the necessary Factory PRESET (indicated by the letter ).

  • Page 9: Prev And Next

    I N A G A I N 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 N A G A I N Then use the PREV NEXT figuration and the other utilities loaded in the memory).

  • Page 10: Number Of Presets

    Numbers 1, 2, 3, 4, 5 In the example: The signal connected to Input The signal connected to Input of the signal on inputs The system is therefore configured as shown in the following diagram. A13 B24 S56 LEFT RIGHT 4.5 Number Of PRESETS 10 Factory PRESETS, 64 User PRESETS and 128 Card PRESETS are available.

  • Page 11: Preset Modifications

    4.8 PRESET Modifications 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"...
  • Page 12 There are 3 distinct categories of PRESETS: Factory PRESETS User PRESETS Card PRESETS 5.1.1 Load PRESET This menu page allows the required PRESET to be loaded and made operatively. To load a PRESET: Use the DIAL to reach the required PRESET. 10 Factory PRESETS, 64 User PRESETS and 128 Card User PRESETS are available.
  • Page 13 Note: In the example, Factory PRESET #3 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...
  • Page 14 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. To download a PRESET: DIAL to reach the required PRESET.

  • Page 15: Delay Menu

    Ignore the data received via the serial ports. I n c o m i n g 5.2.Delay Menu Use this menu to work on the systems delay lines. menu DELAY 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 pages only show the parameters that can actually be used, in the most suitable form of editing.
  • Page 16 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.

  • Page 17: Edit Menu

    The values can be set in the following ranges: 0 P 1 D E L A Y The values can be set in the following ranges: OUTPUT DELAY OUTPUT 1 HIGH 14ms(5m) OUTPUT 3 5.3 Edit menu The values can be set in the following ranges: menu EDIT Parameters...
  • Page 18 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. 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.
  • Page 19 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. I N A Peaking Low Shelving c. Bandwidth Allows to choose the width in octaves of the Peaking or Notch type curve. It s not used with Shelving curves.
  • Page 20 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 into segments that can be used by the individual section of a sound system (for example 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.
  • Page 21 Each filter has the following editable parameters: Type of filter Allows to choose three different types of filter and different attenuation slopes: Butterworth (But) at 6, 12, 18 or 24dB per octave, Bessel (Bes) at 12, 18 or 24dB per octave, Linkwitz-Riley (LR) a 12, 24 or 48dB per octave.
  • Page 22 5.3.4 Output EQ Output equalizer with 5 parametric filters. Also called Channel EQ, allows to alter the tone of each individual output. The characteristics of quality and programmability are identical to those of the Input Equalizer and enable this unit to be used extremely effectively and flexibly.
  • Page 23 Normal: leaves the phase unchanged O P 1 P O L A The effect of this control is summed with that of the operates with 5 steps in a range of between 0 and 180 . In this way it's possible to set the phase of each individual output with 5 steps within a complete 360 revolution, a very useful function when assembling arrays of speaker enclosures, in the control of the interpolation between various enclosures or between sections of the same system.

  • Page 24: Utility Menu

    IMPORTANT! Enabling the LIMITER on a specific output also changes the way in which the level is displayed on the corresponding LED ladder: but the level of the signal at -24dB, -12dB, -6dB compared to the matter what the threshold value is. 5.4 UTILITY Menu This menu comprises a series of submenus that allow to set a series of system options and access certain utilities, such as the control of the Multimedia Memory CARD or protection against accidental or unauthorized changes:...
  • Page 25 The practical use of the Ganging function consists in the possibility of editing with identical values the parameters of similar elements, carrying out single (instead of double) operations. For example, it's possible to set the same Delay value or equalization on both inputs with just one operation; or set identical Xover parameters for the various outputs fed to a stereo sound system;...

  • Page 26: Units Submenu

    b. Output Ganging Used to enable/disable Ganging function on the outputs. The settings are: Disabled O u t p u t G a n g i n g 5.4.2 UNITS SUBMENU Used this submenu to choose the measurement units to be used with certain functions. a.
  • Page 27 5.4.3 Misc. Setup submenu Use this submenu to set a series of system options. a. Input Select Used to choose inputs which MAXIDRIVE3.4 should use. The options include: Digital Inputs I n p u t S e l e c t AC INPUT Apparaten skall anslutas till jordat uttag nar den ansluts...

  • Page 28: Lock Submenu

    c. Temperature Used to key in the value of the environmental temperature of place of installation. The system uses this value to automatically compensate for the differentials due to the difference speed of sound Transmission according to the air temperature. This allows to set the delays during the sound-check and only have to reset them automatically when necessary (For example during a concert, in the event of big jumps in temperature, etc.).
  • Page 29 This function is very useful whenever even temporary changes or tampering with the settings stored in the system must be prevented. For example: fixed installations used by several operators (discotheques, clubs, conference halls, etc.), sound system rental, etc. How to enable protection First of all, choose the protection mode: Two modes are available: Total:...
  • Page 30 Note: alongside the symbol of Total or Partial protection, the letter is protected, but the PRESET in question has undergone one or more changes that have not yet been stored. You can however switch the system on and off without any problems, as the current settings are kept in the buffer memory.

  • Page 31: Comm. Setup Submenu

    ATTENTION! Formatting cancels any data contained in the Card. In the Memory Card submenu, press The Format Card page appears Press ENTER. The system formats the Card until it communicates that it has completed. This operation only requires a few seconds. F o r F o r t i n g .

  • Page 32: Connections

    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 com- mand) each loads into its own memory the PRESET with the corresponding number. This means that, in a chain of MAXIDRIVE3.4, all the units set with PRESET Change RX = Accept load the same number of PRESET, in spite of the fact that it corresponds to PRESETS with different contents in the various units.

  • Page 33: Application

    Outputs 1 ~ 6, RS485 OUT BALANCED XLR-F RS232 RS232 (9Pin-F) Special attentions for R 232 interface: 1. Be careful not to use the pin-to-pin cable in the system, it may damage the communication part of this unit. 2. Be sure to use the female connector on both sides of the cable. 3.

  • Page 34: Organization

    7.2 Organization The following examples will help you well use and connect the unit. a. A13 B24 S56 2-WAY STEREO + 2 MONO AUX [2X2W+2MAX] AC INPUT Apparaten skall anslutas till 95-240V 50/60Hz jordat uttag nar den ansluts PUSH till ett natverk FUSE: 95-120V T500mAL 210-240V T315mAL TIDE...

  • Page 35: Audio Mixer

    b. A135 B246 3-WAY STEREO [2X2W] AC INPUT Apparaten skall anslutas till jordat uttag nar den ansluts 95-240V 50/60Hz PUSH till ett natverk FUSE: 95-120V T500mAL 210-240V T315mAL TIDE A102 DIGITAL IN RS485 OUT MAXIDRIVE3.4 3-WAY STEREO DIGITAL CROSSOVER SIGNAL POWER PROFESSIONAL HIGH POWER STEREO AMPLIFIER PROT...
  • Page 36 c. A13 B24 S56 3-WAY STEREO with MONO SUB+ AC INPUT Apparaten skall anslutas till jordat uttag nar den ansluts 95-240V 50/60Hz PUSH till ett natverk FUSE: 95-120V T500mAL 210-240V T315mAL TIDE A102 DIGITAL IN RS485 OUT MAXIDRIVE3.4 3-WAY STEREO DIGITAL CROSSOVER SIGNAL POWER...
  • Page 37 d. A1324 S56 4-WAY4 MONO + 2 MONO AUX [4W+2MAX] AC INPUT Apparaten skall anslutas till jordat uttag nar den ansluts 95-240V 50/60Hz PUSH PUSH till ett natverk FUSE: 95-120V T500mAL 210-240V T315mAL TIDE TIDE A102 DIGITAL IN RS485 OUT RS485 IN MAXIDRIVE3.4 3-WAY STEREO...
  • Page 38 e. Communications: PC & one or more MAXIDRIVE3.4 connection MAXIDRIVE3.4 3-WAY STEREO DIGITAL CROSSOVER A102 A102 A102 to / from RS232 Serial Port AC INPUT Apparaten skall anslutas till jordat uttag nar den ansluts 95-240V 50/60Hz PUSH PUSH till ett natverk FUSE: 95-120V T500mAL 210-240V T315mAL TIDE...

  • Page 39: Technical Specifications

    8. TECHNICAL SPECIFICATIONS INPUT section Connectors Nominal input sensitivity Input Impedance Maximum Input Level Input Gain Digital input Digital input sample rate Output Section Connectors Output Impedance Nominal Output Level Maximum Out put Level Output Gain DSP Section A/D converters D/A converters Internal dynamics Sampling frequency...

  • Page 40: Warranty

    3.4 This warranty does not apply to the damages to this product that occurred as the following conditions: Instead of operating in accordance with the user's manual thoroughly, any abuse or misuse of this product.
  • Page 41 SE KAKU 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.

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