R LTO User's Manual MISTRAL 900/1500 STEREO POWER AMPLIFIER www.altoproaudio.com Version 1.0 OCT.
IMPORTANT SAFETY INSTRUCTION CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN TO REDUCE THE RISK OF ELECTRIC SHOCK PLEASE DO NOT REMOVE THE COVER OR THE BACK PANEL OF THIS EQUIPMENT. THERE ARE NO PARTS NEEDED BY USER INSIDE THE EQUIPMENT. FOR SERVICE, PLEASE CONTACT QUALIFIED SERVICE CENTERS. WARNING To reduce the risk of electric shock and fire, do not expose this equipment to moisture or rain. Dispose of this product should not be placed in municipal waste and should be separate collection. 11.
IN THIS MANUAL: 1. INTRODUCTION.........................................................................1 2. FEATURES................................................................................1 3. CONTROL ELEMENTS................................................................2 4. APPLICATION............................................................................5 5. TECHNICAL SPECIFICATIONS.....................................................13 6. WARRANTY..........................................
1. INTRODUCTION Thank you for purchasing the MISTRAL 900/1500. They are the 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. The amplifiers contain two independent channels, with separate AC transformer secondaries, power supplies and protection system.
SP OT L 3. CONTROL ELEMENTS IG HT 2 3 1500 ON CH1 CH2 CLIP LIMIT OPERATING/ PROTECTION POWER ON OFF POWER 1 R Stereo Power Amplifier 4 5 LTO 6 1 POWER SWITCH It switches the amplifier ON and OFF. 2 CLIP LED When the signal distortion reaches or surpasses 0.5% , the LED lights up. This means the output level of signal source is too high and it is time to reduce the input level until the LED turns off. 3 OUTPUT LIMITER LED When the unit limits the output signal, the LED lights up.
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SP OT L 3. CONTROL ELEMENTS IG HT 14 MODE SELECTOR The MISTRAL 900/1500 power amplifiers present two operating modes: - Stereo Mode In this mode, CH 1 and CH 2 operate independently (as a normal stereo amplifier). The CH 1 input signal will be output from the CH 1 output connector, and CH 2 input signal will be output from the CH 2 output connector. - Bridge Mode In this mode, CH 1 input signal will be output from the bridge-mono output connector.
4. APPLICATION The MISTRAL 900/1500 amplifiers provide two operating modes: stereo mode and bridge mode, you can decide each specific operating mode according to your actual application circumstance. Please see following diagram for connecting the power amplifier into your audio system. - Stereo Mode In this mode, CH 1 and CH 2 operate independently (as a conventional stereo amplifier).
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4. APPLICATION - Stereo Mode You can also operate the parallelled mode via outside wiring, so the signal input from CH 1 or CH 2 will be output from both CH 1 and CH 2 simultaneously. The volume of CH 1 or CH 2 can be controlled separately.
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4. APPLICATION - Bridge Mode In this mode, the CH 1 input signal will be output from the bridge output connector. On the other hand, the output level control of CH 2 should be turned down to smallest (turn the volume control at counterclockwise). Only the volume control of CH 1 is used to control the volume of the whole system.
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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 provide a more effective and efficient after-sales warranty service.
SEIKAKU 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.
