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Summary of Contents for Alto D1
- Page 1 User's Manual MULTI-CHANNEL POWER AMPLIFIER www.altoproaudio.com Version 1.0 Oct. 2006 English...
- Page 2 SAFETY RELATED SYMBOLS Never cut off the internal or external protective grounding wire or disconnect the wiring of protective grounding terminal. CAUTION RISK OF ELECTRIC SHOCK Operating Conditions DO NOT OPEN This apparatus shall not be exposed to dripping or spl- The symbol is used to indicate that some hazard- ashing and that no objects filled with liquids, such as ous live terminals are involved within this apparatus,...
- Page 3 Preface Dear Customer: Thanks for choosing LTO D series Multi-channel Power Amplifier and thanks for choosing one of The results of 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 1. INTRODUCTION............................4 2. FEATURES .............................4 3. CONTROL ELEMENTS ..........................5 3.1 The Front Panel 3.2 The Rear Panel 4. APPLICATION ............................8 4.1 Stereo Mode 4.2 Bridge Mode 5. TECHNICAL SPECIFICATIONS ....................
- Page 5 D SERIES D series includes D1, D2, D3, D4. It is a line of high power, low profile, professional Power Amplifiers with advanced features and great reliability. They deliver tremendous power in only two rack spaces, providing high level performance under the most demanding conditions. An automatic speed fan matches cooling capacity with heat requirements.
- Page 6 Protection LED Red LED, D1, D2, D3, D4 each has four protection functions. They are respectively short-circuit protection, over- load protection and over heat protection. If one of the protections is activated, the protection LED lights up. If the unit works well, the protection LED lights off.
- Page 7 Breaker Breaker protects the amplifier from damage from over-current. If the current surges, the breaker switches off amplifier circuit automatically, and then it can resume the amplifier operation by pressing the breaker manually. Combo Input Connector One connector for each channel. These are combo con- nectors which input signal to amplifier respectively.
- Page 8 30Hz Filter of 2-channel models 30Hz Filter of 4-channel models Output Connector There are two kinds of connectors: Binding post and professional speak-on connector. You can choose proper connectors according to actual need. Wiring connections are shown on the back of the chassis. Please pay special attention the polarity marks, which are designed to make connections easier.
- Page 9 Channel 2 Channel 2 Channel 1 Channel 1 MODE set the switch to stereo Channel 4 Channel 4 Channel 3 Channel 3 connect the binding posts or the speak-on connectors 4.2 Parallel Mode In parallel mode, the mode selector should be set to PARALLEL, t he signal input from Channel 1 or Channel 2 can be output from Chanel 1 and Chanel 2 simultaneously.
- Page 11 6. 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 12 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. Copyright 2006 Sekaku Electron...