SERIES AND PARALLEL WIRING REFERENCE 404s 4/3/2 Channel Power Amplifier 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 A - 4.25.
CONGRATULATIONS! You now own the REFERENCE404s Amplifier, the product of an uncompromising design and engineering philosophy. Your Soundstream REFERENCE404s amplifier will outperform any other amplifier in the world. SERVICE Your Soundstream REFERENCE404s amplifier is protected by a limited warranty. Please read the enclosed warranty card. To maximize the performance of your system, we recommend that you thoroughly acquaint yourself with its capabilities and features.
PROTECTION CIRCUITRY Your REFERENCE404s amplifier is protected against both overheating and short circuits by means of the following circuits: • Auto High Current™ power supply • Main power supply fuses • Circuit breaker on each channel • 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 REFERENCE404s Diagram ...........................
SAMPLE SYSTEM #4 2 channels of high pass input with 2 channels of stereo output 2 channels of stereo low pass input with 1 bridged channel of output DESIGN FEATURES • 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.
SAMPLE SYSTEM #3 2 channels of input with 2 channels of bridged high pass output External input to channels 3 & 4 with an external crossover • Fault Monitor LED on the top panel notifies you of blown power supply fuses. • 1/2 ohm Drive Ability - The REFERENCE404s amplifier is designed to drive virtually any load—all the way down to 1/2 ohm stereo (per channel) or 1 ohm mono.
Reference404s 6 SAMPLE SYSTEM #2 2 channels of input with 4 stereo channels of high pass output Internal input to channels 3 & 4 with an external crossover 15
SAMPLE SYSTEM #1 4 channels of input 4 channels of full range output Key to Callouts 1. Fault LED - Indicates a blown fuse. 2. High Power LED - Indicates amplifier power on in "High Power" mode. 3. Auto High Current™ LED - Indicates amplifier power on in "High Current" mode. 4. +12V - Connected to a fuse or circuit breaker, then to the battery's positive post. 5. GND - Main ground connection. Bolt to a clean chassis ground in the vehicle. 6. REM - Remote turn-on input from the head unit. Accepts +12V. 7.
INSTALLATION STEP 4 AUTO HIGH CURRENT™ POWER SUPPLY LEVEL SETTING The REFERENCE404s amplifier employs an extremely efficient Auto High Current™ power supply (patent pending). This new power supply circuitry automatically customizes your amplifier for optimum efficiency and power output into virtually any impedance load. When other brand amplifiers are driven at low impedances (i.e.
INSTALLATION STEP 3 INSTALLATION STEP 1 INSTALLATION AND MOUNTING 1. AMPLIFIER LOCATION The REFERENCE404s amplifier employs 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.
INSTALLATION STEP 2 WIRING (cont.) WIRING REMOTE TURN-ON POWER AND GROUND To ensure maximum output from your REFERENCE404s amplifier, use high quality, low-loss power and ground cables. The REFERENCE404s amplifier will accept up to 4 gauge power and ground cables. Determine from the chart REFERENCE404s up to 10’ up to 20’ Soundstream Power40 or Power80 (4 or 8 ga.) Soundstream Power40 (4 ga.) CIRCUIT BREAKERS/FUSES Connect the “Remote” to the turn-on lead from the source unit.
