SERIES AND PARALLEL WIRING REFERENCE Class A 5.0 & 10.0 Power Amplifiers 2-4 ohm drivers in parallel = 2 ohms OWNERS MANUAL AND INSTALLATION GUIDE 4-4 ohm drivers in parallel =1 ohm 2-4 ohm drivers in series = 8 ohms SOUNDSTREAM TECHNOLOGIES 120 Blue Ravine Road Folsom California 95630 USA ph 916.351.1288 fax 916.351.0414 rev B - 4.17.
CONGRATULATIONS! You now own the REFERENCE Class A Amplifier, the product of an uncompromising design and engineering philosophy. Your Soundstream REFERENCE Class A amplifier will outperform any other amplifier in the world. To maximize the performance of your system, we recommend that you thoroughly acquaint yourself with its capabilities and features. Please retain this manual and your sales and installation receipts for future reference.
PROTECTION CIRCUITRY Your REFERENCE Class A amplifier is protected against both overheating and short circuits by means of the following circuits: • Main power supply fuses • Smart Power Supply Thermal Rollback activating at 85°C. • A fail-safe thermal protection circuit activating at 95°C. TABLE OF CONTENTS Design Features ................................................................. 4 - 5 AIRBASS™ .............................................................................
LSE.Q THEORY AND USE (continued) DESIGN FEATURES 8.0 • Pure Class A Output Topology for the utmost in musicality and definitive power output. Soundstream's unique design allows the Class A amplifiers to deliver incomparable sonics or, when operated at lower impedances, to provide phenomenal amounts of power. • Uncompromising Design and Construction including mil-spec glass epoxy circuit boards and high current custom gold-plated solid brass connections that will accept up to 4 gauge power/ground wire.
LSE.Q THEORY AND USE (Class A 10.0) LSE.Q is a unique subwoofer control circuit included with the SOUNDSTREAM REFERENCE Class A 10.0 amplifier. It is capable of removing subsonic energy in program material. The circuit consists of two controls. One adjusts the frequency of operation and the other adjusts the range of boost. With both controls adjusted fully counter-clockwise, no boost is applied and the amplifier is flat in response down to 30 Hz. FIG. 1 LSE.
INSTALLATION STEP 5 Class A 5.0 LEVEL SETTING 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 ratios even when using sources with minimal output. In the ideal situation, all components in the audio system reach maximum undistorted output at the same time.
INSTALLATION STEP 4 INSTALLATION AND MOUNTING Key to Callouts 1. AMPLIFIER LOCATION The REFERENCE Class A amplifiers employ highly efficient circuitry and a unique ChassisinkTM design to maintain lower operating temperatures. Additional cooling may be required if the amplifier is located in a tightly confined area or when driving especially low impedance loads at extremely high levels.
Class A (Continued from page 12) of blown power supply fuse, the “Fault” indicator on the top panel will light. The fuse is accessible from the front panel of the amplifier. See the chart below to determine the fuse value. Never replace the fuses with a higher value than what is supplied. This may result in amplifier damage and will REFERENCE Class A Amplifier Fuse Values Amplifier Amplifier Fuse Battery Fuse / Circuit Breaker Class A 5.0 40 amp Maxi-Fuse 60 amp Class A 10.
INSTALLATION STEP 3 Key to Callouts WIRING POWER AND GROUND To ensure maximum output from your REFERENCE Class A amplifier, use high quality, low-loss power and ground cables. The REFERENCE Class A amplifiers will accept up to 4 gauge power and ground cables. Determine 1. 2. 3. 4. up to 10’ up to 20’ 5. Class A 5.0 Soundstream Power40 or Power80 Soundstream Power40 only (4 ga.) 6. Class A 10.0 Soundstream Power40 only (4 ga.) Soundstream Power40 only (4 ga.) 7.
INSTALLATION STEP 1 INSTALLATION STEP 2 COHERENT STEREO™ / MIXED-MONO / BRIDGED MONO BALANCED / UNBALANCED INPUT The REFERENCE Class A amplifiers have the ability to operate in any one of the following modes: Coherent Stereo™ with identical left and right stereo channels for maximum fidelity. Best choice for satellite speakers. Use this mode unless Mixed-Mono is necessary. Mixed-Mono in order to drive stereo and mono simultaneously; works well for center channels.
