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SPECIFICATIONS
Channels I & 3 & 4
4 a Stereo 2 Q Stereo
(8 i2 Bridged)
(4 Q Bridged)
SWNDSTREAI’V
(12.5 Vdc) (14.4 Vdc)
T E C H N 0 L 0 G I E S
225Wx4
1 255 1 (4kW x2) 1 $“,“x:, j
25Wx4 5ow x4
355
(5OW x 2) (IOOW x 2)
4owx4 80W x4
(80W x 2) (160W x 2)
I I
Subwoofer Channel
MODEL
(12.5 Vdc) (14.4 Vdc)
I I
5OWxl 100wx1
I I I I
75Wxl 15OWxl
I I
I I
15OWxl 250W x 1
I I I I
RUBICON
THD co.1 %
Signal to Noise
Frequency Response 20 Hz to 20 kHz 0.5 dB
Stereo Separation >90
Damping 900
Input Sen
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Table of Contents You now own a Soundstream amplifier, the product of an uncompromising design and engineering philosophy. Your Soundstream Design Features ....................................................... amplifier will outperform any other amplifier in the world. To maximize the performance of your recommend that you Amplifier Diagram ................................. thoroughly acquaint yourself with its and features. Please retain this manual and your sales receipt for future refer
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ChassisinkTM All transistors are ideally located and sandwiched be- tween the circuit board and the to provide cool efficient ampli- RUBITM (Rapid-Use Branched This new proprietary power - - fier operation. supply topology eliminates “power sags” during low frequency repro- duction by rapidly increasing the duty cycle, stabilizing the power sup- Differentially Balance RCA Input eliminates ground loop related noise ply and allowing it to deliver the power required when reproducing low in the au
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KEY TO CALLOUTS 1. Power LED - Indicates amplifier power. 2. Subsonic / Hawkins Bass Control Switch - Select “SUB SONIC” to engage the Sub Sonic filter at 13 Hz. Select “HAWKINS BASS CONTROL” to engage the subwoofer channel’s high pass filter 45 Hz with boost for optimum bass. 3. Subwoofer Channel Input Select - Selectable inputs; “CH l-4” for non- fading bass control, “CH 3&4” for front to rear fading bass control. 4. Channels 3&4 Input Select - Selectable inputs from internal (CH l&2) or ex
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KEY TO CALLOUTS 1. Power LED - Indicates amplifier power. 2. Subsonic / Hawkins Bass Control Switch - to engage the Sub Sonic filter at 13 Hz. Select “HAWKINS BASS CONTROL” to engage the subwoofer channel’s high pass filter @ 45 Hz with +6 dB boost for optimum bass. 9 3. High Pass XOVER Switch - (Channels Select “IN” for use with the internal crossover or “OUT” for use with external crossover. 10 4. High Pass XOVER Switch - (Channels Select “IN” for use with the 5. Subwoofer Channel Input Sele
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31WAY (555 ONLY) The amplifiers incorporate an on-board staggered electronic cross- MIDBASS/MIDRANGE BAND PASS over, with RCA outputs only) to drive an external amplifier. No external electronic crossover is necessary. However, if you do desire to use an figuration. In the three way mode, you can tri-amplify with “active” or external crossover you still have that option. The high and low pass portions of midrange to maximize control over individual drivers. The includes the crossover can be
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Hawkins Bass Control - Theorv and Use INSTALLATION STEP 1 Hawkins Bass Control (variable) is circuit included with the Soundstream amplifier. It SELECTING THE SPEAKER OUTPUT MODE is capable of removing subsonic energy in program material be- low 45 Hz at 12 dB/Octave, while boosting subwoofer frequen- Channels 1 through 4 of the 355 & 555 amplifiers have the ability cies. The circuit consists of two controls. One engages a sub- to operate in any one of the following modes: sonic High Pass fil
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( INSTALLATION STEP 3 f INSTALLATION STEP 2 ] INSTALLATION AND MOUNTING POWER AND GROUND To ensure maximum output from your amplifier, use high quality, AMPLIFIER LOCA T/ON loss power and ground cables and connections. The amplifiers will The amplifier employs highly efficient circuitry, a custom-engineered accept up to 4 or 8 gauge power and ground cables. Determine from the chart heat sink, and a unique Chassisink construction to maintain lower operating tem- below the minimum and maximum
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( INSTALLATION STEP 4) 4 channels of input 2-way front/rear fade with constant level bass 4 channels of 2-way high pass, (rear de-emphasis engaged on 555) LEVEL SEmlNG subwoofer channel in low pass _ _. . _ The input levels are adjusted by means of the input level controls located on the RUBiCGfu255 0 - m ] ! cm r-a 0 c. - cH2~4.atI~2 front of the amplifier. This is a unique dual-stage circuit that adjusts both level and SLN- cnAnmu2*4 gain. This topology maintains better S/N Ratio even when usi
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SAMPLE SYSTEM #3 - /2ss ag55.. SAMPLE SY$TEllU #2 -All Mode/s 4 channels of input 2 channels of input 3 channel operation with satellite to subwoofer fading 4 channels of high pass, (rear de-emphasis engaged on 2 channels of bridged high pass, subwooferchannel in low pass subwoofer channel in low pass SOUNDI- G?Yh” t TOP VIEW TOP V EW LML IwU7 CC VOLT lm RiGHI +12V REMOTE GND FUSE 1.0 ‘I OUTPUTS X*OVER lcmms LEVEL t12V REMOTE GND 12 3 4SU8 Hz +yANNE(b 3 l 4 J -_-- ---- __-__-_-_ - FRONT VIEW
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TRIDENT PROTECTION CIRCUITRY SAMPLE SYSTEM #8 (555 ONLY!) Your 355 & 555 are protected against both overheating 6 channels of input and short circuits power fuses and the following circuits: 5 channel operation with rear satellite fading & subwoofer control + Speaker Protection 4 channels high pass 2-way, rear de-emphasis engaged * Ground fault Protection subwoofer in low + A fail-safe thermal protection F NOTE: If you experience blown main power supply fuses, it is like/’ that the amplif
