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BRYSTON
OWNER’S MANUAL
Instructions For Bryston
SST Series Amplifiers
Model 7B SST
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7B SST Series Amplifier Table of Contents General Introduction Page 1 Description Installation and Ventilation Rear Panel Input Settings/Connections Page 2 Setting Input Selector Switch Balance Input Connector Configuration Setting Input Sensitivity Output Binding Posts Page 3 Front Panel Description Page 4 LED Indicator (Power-up Sequence) LED Indicator (Operating Conditions) Power Control Panel Page 5 Master Circuit -Breaker AC Power Input Local/Auto Switch Local/External Switch Block Diagram
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7B SST Series Amplifier Introduction Thank you for choosing the 7B SST SERIES mono block Power Amplifier. Bryston welcomes any suggestions you may have, or comments regarding the operation of your amplifier. We consider you, our customer, to be Bryston’s most important resource, and your opinion is very much appreciated. Description 7B SST The 7B SST is a single channel mono 600 Watt audio power amplifier. The 7B SST selects a balanced or single ended input and a gain of 29dB(1v) or 23dB(2v)
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7B SST Series Amplifier Rear Panel Input / Output Connections PUSH 1. Input Select Switch. Each SST channel gives the user the option of switching between either balanced input or single ended input. 2. Balanced Input connector. ( Imp. 20k ) This input connector accepts standard ‘XLR’ or 1/4” TRS . Use quality, 100% shielded cables with gold plated connectors. 3. Single Ended Input. ( Un-balanced input ) ( Imp. 50k ) This input connector accepts standard ‘RCA’ or ‘Phono’ connectors. Use qualit
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7B SST Series Amplifier 6. Output binding posts. The RED binding post is the in-phase amplifier output. Connect to this post the (+) terminal on the loudspeaker. The BLUE binding post is the inverted-phase amplifier output. Connect to this post the (-) terminal on the loudspeaker. Note: At no time should either output be connected to a ground, or chassis. Failure of the amplifier may result. Never connect either output in parallel with another amplifier. The minimum recommended loudspeaker load
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7B SST Series Amplifier Front Panel 1. 'SST POWER' switch The front panel label 'SST POWER', is a touch sensitive membrane switch used to apply or remove a/c line power to the soft start circuitry. Push firmly the center of the switch until the power-up sequence begins. Push again and the amplifier will power-down. ( Note: the rear circuit breaker must be on for the amplifier to power-up) 2. LED Indicator The 7B SST has an LED indicator to monitor the following conditions: UNLIT - indicates the
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7B SST Series Amplifier Power Control 1. Master circuit - breaker. The 7B SST amplifier uses a magnetic-trip circuit breaker (1) to protect the amplifier. This switch should be ‘OFF’ during installation. When switched ‘OFF’ all A/C power is removed from the amplifier, including standby power. The circuit breaker is not the power switch and should be switched to and left ‘ON’ after the installation is complete. Use the “SST POWER” switch or an external control voltage to Power-up or Power-down
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7B SST Series Amplifier MODULE MUTE +/-30Vdc SENSITIVTY AND GAIN MODULE 1 SWITCH +/-65Vdc SINGLE ENDED INPUT INPUT REGULATED INPUT RED BINDING POST DEDICATED HIGH BUFFER POWER LOW SELECT OUTPUT CURRENT POWER AND GAIN AMPLIFIER VOLTAGE XLR OR SWITCH SUPPLY (NON INVERTED) STAGE SUPPLY PHONE INPUT +/-30Vdc TEMPERATURE MONITOR CLIPING AND LED CURCUIT MONITOR SOFT START AC INPUT AND LOGIC CONTROL MODULE MUTE +/-30Vdc MODULE 2 +/-65Vdc REGULATED BLUE BINDING POST DEDICATED HIGH POWER LOW INVERTER OUTP
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7B SST Series Amplifier Typical Band-pass Noise -50 -60 Power supply artifacts are all below -95 dBu balanced input with 23dB (2v) gain shown -70 -80 d B -90 u -100 -110 -120 dBu: dB relative to a reference of 0.7746 Volts -130 20 50 100 200 500 1k 2k 5k Hz Typical THD+N Harmonic Content +10 +0 -10 -20 d B r -30 A The harmonic content of the 7B SST is all even order. -40 R E F -50 1 5 -60 0 W -70 8 O -80 H M S -90 -100 -110 -120 10k 20k 30k 40k 50k 60k 70k 80k 90k 100k 110k 120k 130k H
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7B SST Series Amplifier Typical Frequency Response 7BSST +0.5 +0.4 +0.3 +0.2 +0.1 8 ohm 600w +0 -0.1 4 ohm 900w d -0.2 B r -0.3 A -0.4 -0.5 -0.6 -0.7 -0.8 -0.9 -1 20 50 100 200 500 1k 2k 5k 10k 20k 50k Hz Typical Phase Response +15 +14 +13 +12 +11 +10 +9 +8 d +7 e g +6 4 ohm 900w +5 +4 +3 +2 8 ohm 600w +1 -0 -1 20 50 100 200 500 1k 2k 5k 10k 20k Hz 10
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7B SST Series Amplifier Typical THD+N Sweep 0.01 0.009 0.008 0.007 0.006 Graph shows that distortion is % 0.005 essentially unaffected by load. 2v balanced input shown. 0.004 0.003 0.002 4 ohm 900w 0.001 8 ohm 600w 0 20 50 100 200 500 1k 2k 5k 10k 20k Hz Typical IMD Sweep 0.01 0.009 0.008 0.007 0.006 0.005 % 0.004 0.003 4 ohm 900w 0.002 8 ohm 600w 0.001 0 2k 3k 4k 5k 6k 7k 8k 9k 10k 20k Hz 11
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7B SST Series Amplifier Damping Factor 800 750 700 650 600 550 500 8 ohm reference 450 D 400 F 350 300 250 200 150 100 50 0 20 50 100 200 500 1k 2k 5k 10k 20k Hz 12
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7B SST Series Amplifier Technical Specifications Power Output 600 watts per channel into 8 ohms 900 watts per channel into 4 ohms Gain Select and Sensitivity 29dB - 2.3Vin = 600W @ 8 Ohms - (1V Position) 23dB - 4.6Vin = 600W @ 8 Ohms - (2V Position) Input Impedance 50 Kohms single ended 20 Kohms balanced Distortion IM or THD+noise < 0.005% 20Hz to 20kHz at 600 watts into 8 W < 0.007% 20Hz to 20kHz at 900 watts into 4 W Noise Measured with input shorted - 20Hz to 20kHz. >110dB below rated out
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BRYSTON 20 -YEAR WARRANTY Bryston products are warranted to be free from manufacturing defects for a minimum of twenty years from the original date of manufacture. This includes parts, labour and return shipping to the first owner and all subsequent owners. Warranty coverage is automatic and commences with the original date of manufacture which is kept on file at Bryston. In the event of a defect or malfunction, Bryston will remedy the problem by repair or replacement, as we deem necessary, to r
