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Alto DPA 2500 User Manual

40 bit enhanced stereo power amplifier
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User's Manual
40 BIT ENHANCED
DPA 2500/4000
STEREO POWER AMPLIFIER
R
LTO
www.altoproaudio.com
Version 1.0 September 2004
English

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Summary of Contents for Alto DPA 2500

  • Page 1 User's Manual 40 BIT ENHANCED DPA 2500/4000 STEREO POWER AMPLIFIER www.altoproaudio.com Version 1.0 September 2004 English...
  • Page 2 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 LTO DPA2500/4000 Stereo Power Amplifier which is the result of our endeavors. LTO AUDIO TEAM, music and audio are much more than a job, they are a passion and an obsession! We have been designing professional audio products for a long time in cooperation with many of the world's major brands.

  • 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...6 4.1 Preset Selection 4.2 Edit Menu 4.3 Channel Selection 4.4 Comm Selection: 4.5 SIG/LIMITER LED 5. REMOTE CONTROL ...7 5.1 How to set the DPA's ID number 5.2 Connection to the PC 5.3 First Steps with the PC Editor...

  • Page 5: Introduction

    1. INTRODUCTION LTO DPA2500/4000 40 Bit DSP Stereo Amplifier is a high power, low profile, professional Power Amplifier with advanced features and great reliability. it is also a versatile effect processor. You can set the input and output audio configuration through recalling one of the presets included in the internal memory or PC editor software.
  • Page 6 - Stereo Mode In this mode, channel 1 and channel 2 operate independently (just as traditional stereo amplifier). The signal input into channel 1 can be output from channel 1 only, similarly, the signal input into channel 2 can be output from channel 2 only.You can also operate the paralleled mode via outside wiring, so, the signal input from...

  • Page 7: Getting Started

    20. RS232 Serial Communication Port The RS232 port allows incoming and outgoing communication between the DPA2500/4000 stereo amplifier and PC via connecting the DPA2500/4000 stereo amplifier to a PC, all the processor functions are possible to be controlled remotely by ALTO editing software.

  • Page 8: Channel Selection

    - Hum Cancel (ON/OFF) Select "EDIT" using SELECT key. Then select "HUM CANCEL" using UP/DOWN keys, both the "HUM CANCEL" and "EDIT" indicators will light Press "ENTER" to set Hum Cancel function ON or OFF. Note: the HUM CANCEL indicator will be lighting all the time if you set this function ON, and it effects only on selected channels.

  • Page 9: Connection To The Pc

    5.2 Connection to the PC Connect the First DPA to the PC's RS232 serial port, using a 9-pin female plug connected to the RS232 socket on the rear panel of unit. Connect RS485 IN of the Second DPA to the First DPA 's RS485 OUT socket, in this way, you can connect up 32 DPA units for a same PC.

  • Page 10: Edit Mode (Password Protection)

    2>. The PC Editor should now load. A welcome screen will appear. This closes after 5 seconds (or click on it). Select NEW from the FILE menu. A window will open showing several different model names, because the same software is used for some of our pro audio models. Select DPA amp and click OK. You will then be presented with 2 options NEW UNIT and NETWORK SCAN.

  • Page 11: Help File

    5.5 Help File The HELP file accessible from within the PC Editor will be updated as necessary. Since software updates after the printing of this manual may affect the instructions provided here, please check the Help File for any later remarks. 5.6 Introduction to the PC Editor When you launch the editor on your PC, you will see the opening screen following (later software versions may differ).
  • Page 12 6. PARAMETER MENUS DESCRIPTION - HUM CANCEL: allows the modification of the dynamic NOTCH filter parameters. The graph included shows the filter response curve. - NOISE GATE: allows the modification of the noise gate parameters. The graph included shows the filter curve. - MULTICOMP: allows the modification of the multiband compressor parameters.
  • Page 13 8. CONNECTIONS The following diagrams show the schemes of the recommended cables and some connection examples referred to various system configurations. Inputs A & B, RS485 IN BALANCED XLR-M Inputs A & B BALANCED JACK Parsllel Output Connectors, RS485 OUT BALANCED XLR-F RS232 RS232 (9-Pin)
  • Page 14 INPUT Apparatenskallanslutas CH1BALANCEDINPUTP CH2BALANCEDINPUTP STEREO INPUTINPUT CH1OUTPUT1 TIP/PIN BRIDGE BRIDGE INPUTTIP/PIN ARALLELOUTPUTLIMITEROFFON ARALLELOUTPUTMODEBRIDGE POWER OUTPUTS INPUT INPUT INPUT INPUT BRIDGE TIP/PIN 2 TIP/PIN 2 RING/PIN 3 RING/PIN 3 SLEEVE/PIN 1 SLEEVE/PIN 1 MODE LIMITER PARALLEL STEREO BALANCED BALANCED PARALLEL BRIDGE OUTPUT INPUT INPUT...
  • Page 15 You can also operate the paralleled mode via outside wiring, so the signal input from channel 1 or 2 will beo- tuput from both channel 1 and channel 2 simultaneously. The volume of channel 1 or channel 2 can be contr separately.
  • Page 16 Balanced INPUT INPUT INPUT TIP/PIN 2 RING/PIN 3 SLEEVE/PIN 1 MODE PARALLEL STEREO BALANCED BRIDGE OUTPUT INPUT MODE Release this button Balanced INPUT INPUT INPUT TIP/PIN 2 RING/PIN 3 SLEEVE/PIN 1 MODE PARALLEL STEREO BALANCED BRIDGE OUTPUT INPUT MODE Release this button Input Connector Input Connector POWER OUTPUTS...
  • Page 17 9.2 Bridge Mode In this mode, the signal input into channel 1 will be output from the bridged end, on the other hand, the output level control of channel 2 should be turn down to smallest (turn the volume control at counterclockwise). Only the volume control of channel 1 is used to control the volume of whole system.
  • Page 18 Indicators (1 per channel) Connectors, each channel Cooling Load Protection Power Requirements Dimensions Net Weight DPA2500/4000 40 Bit DSP Enhanced Stereo Amplifier 460W / 625W 830W / 1000W 1400W / 2000W <0.05% 20Hz-20KHz 1dB, -2dB points: 20Hz-20KHz >300 at 8ohms...
  • Page 19 11. 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.
  • Page 20 SEKAKU ELECTRON INDUSTRY (H.K.) CO. LTD. No.1, Lane 17, Sec. 2, Han Shi West Road, Taichung, 401 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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