Alto DPA900/1500 User Manual
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Alto DPA900/1500 User Manual

40 bit enhanced stereo power amplifier
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User's Manual
40 BIT ENHANCED
DPA 900/1500
STEREO POWER AMPLIFIER
R
LTO
www.altoproaudio.com
Version 1.0 September 2004
English

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Summary of Contents for Alto DPA900/1500

  • Page 1 User's Manual 40 BIT ENHANCED DPA 900/1500 STEREO POWER AMPLIFIER www.altoproaudio.com Version 1.0 September 2004 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 We would like to thank all the people that worked with us to make a vision real! Our designers and made the DPA900/1500 Stereo Power Amplifier, a very reliable and high quality product ready for all your venues. And thanks to their passion for music and professional audio it has been possible for us to offer you, our most important team member, our continued support too.

  • 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

    Each channel has independent protective circuitry against open circuit, short circuit, mismatched loads and over temperature. Thanks to the use of selected and expensive components, the performance of DPA900/1500 is worth much more than its price.

  • Page 6: Rear Panel

    - 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 DPA900/1500 stereo amplifier and PC via connecting the DPA900/1500 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

    And the first unit connected to the PC thru RS232 must be switched ON and wor king, otherwise none of the other units can be controlled by the PC. DPA900/1500 5.3 First Steps with the PC Editor To avoid accidentally overwriting an existing PRESET, it is important that you follow the correct routine when ini- tiating a session between the DPA unit and your computer.

  • 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: Parameter Menus Description

    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: Connections

    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: Application

    9. APPLICATION Total two optional modes: Please see following diagram for connecting the power amplifier into your audio system. 9.1 Stereo Mode In this mode, channel 1 and channel 2 operate independently (just as traditional input into channel 1 can be out- put from channel 1 only, similarly, the signal input into channel 2 can be output from channel 2 only.
  • 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 MODE Release this button Balanced INPUT MODE Release this button Input Connector Input Connector POWER OUTPUTS TIP/PIN 2 RING/PIN 3 SLEEVE/PIN 1 POS NEG POS NEG BRIDGE MODE LIMITER STEREO PARALLEL BRIDGE POS NEG OUTPUT OUTPUT1 TIP/PIN 2 RING/PIN 3 SLEEVE/PIN 1 POS NEG...

  • Page 17: Bridge Mode

    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: Technical Specifications

    Indicators (1 per channel) Connectors, each channel Cooling Load Protection Power Requirements Dimensions Net Weight DPA900/1500 40 Bit DSP Enhanced Stereo Amplifier 190W / 320W 300W / 500W 600W / 1000W <0.05% 20Hz-20KHz 1dB, -2dB points: 20Hz-20KHz >300 at 8ohms...

  • Page 19: Warranty

    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.

This manual is also suitable for:

Dpa 900Dpa 1500

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