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REFERENCE
414s
644s
4/3/2 Channel
Power Amplifiers
OWNER’S MANUAL
AND
INSTALLATION
SOUNDSTREAM _
TECHNOLOGIES
GUIDE
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l om*o CONGRA TULA TIONS! TABLE OF CONTENTS a REFERENCE Amplifier, the product of an uncompromising design and engineering philosophy. Your Soundstream Design Features .................................................... 4 - 5 REFERENCE amplifier will outperform any other amplifier in the world. Reference41 4s Diagram ........................................ 6 - 7 To maximize the performance of your system, we recommend that you thoroughly acquaint yourself with its capabilities and features.
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DESIGN FEATURES . ohm Drive Ability - only) The REFERENCE6445 l Uncompromising Design and Construction including glass amplifier is designed to drive virtually any load-all the way down to epoxy circuit boards and high current custom gold-plated solid brass ohm stereo (1 ohm mono). ohm Drive Ability - only) The l Auto High CurrentTM - Soundstream’s exclusive circuit which amplifier is designed to drive virtually any load--all the way down to 1 automatically customizes your amplifier to its
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4 INSTALLATION STEP 1 1. l AUTO HIGH CURRENTTM POWER SUPPLY COHERENT STEREOTM / MIXED-MONO / BRlDGED MONO The REFERENCE amplifier employs an extremely efficient Auto High CorrwP power supply (patent pending). This power supply circuitry automatically The REFERENCE amplifier has the ability to operate in any one of the following customizes your amplifier for optimum efficiency and power output into virtually modes: any impedance load. When other brand amplifiers are driven at low impedances 1 o
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4 INSTALLATION STEP 3 a l l INSTALLATION STEP 2 b BALANCED/UNBALANCED INPUT WIRING The REFERENCE6445 amplifier has the ability to accept either standard POWER AND GROUND Unbalanced RCA signal inputs, or Balanced “Pro Audio” inputs with the use of the Soundstream BLTTH or BLT4N Balanced Line Transmitters or some other low-loss power and ground cables. The REFERENCE amplifiers will accept up balanced line audio source. Before installing your system, you should decide to 4 gauge power and ground ca
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4 INSTALLATION STEP 4 I. I I (Continued From page 13) INSTALLATION AND MOUNTING INTERNAL The REFERENCE amplifiers are fused with automotive-type fuses. In the event 1. AMPLIFIER LOCA T/ON of blown on the top panel will light. The The REFERENCE amplifiers employ highly and See the fuses are accessible via a plastic plug on the bottom of the amplifier. design to maintain lower operating temperatures. Additional chart below to determine the fuse value. Never replace the fuses with a cooling may b
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.( INSTALLATION STEP 5 L Level Setting the Reference644s LEVEL SETTING 1. Turn the amp’s input levels to minimum position (fully counter-dockwise). If any channel is in low pass mode, set the subwoofer level pot to the 0 The input levels are adjusted by means of the individual channel input level controls located on the front of the amplifier. This is a unique dual-stage circuit that adjusts both level and gain. This topology maintains better Signal-to-Noise 2. Begin with the input level switch
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/ INSTALLATION STEP 6 k l CROSSOVER ADJUSTMENTS ACCESSORY OPT/ON feature can be added to the REFERENCE6445 The and REFERENCE414s amplifiers incorporate an & amplifiers. This feature allows wireless RF remote board staggered electronic They also have RCA outputs to drive an level adjustment of the amplifier, while the low pass filter on the amplifier’s external amplifier. No external electronic crossover is necessary. The high and internal crossover is engaged. (AIRBASS TM does not control
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l . TROUBLESHOOTING PROTECTION CIRCUITRY CAUSE PROBLEM Your REFERENCE amplifier is protected against both overheating and short No sound and power LED & 1 No power or ground at amp circuits by means of the following circuits: noJ lit 1 No remote turn-on signal l l Auto High CurrentTM 1 Blown fuse near battery l Circuit Breaker on each channel No sound, power LED 1 No signal input l Smart Power Supply Thermal the AIRBASSTM option has not l ) The switch is in the “IN” position, Move it to t
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