7BSST POWER AMPLIFIER OWNER’S MANUAL
7B SST Series Amplifier Table of Contents General Introduction Description Installation and Ventilation Page 1 Rear Panel Input Settings/Connections Setting Input Selector Switch Balance Input Connector Configuration Setting Input Sensitivity Page 2 Output Binding Posts Page 3 Front Panel Description LED Indicator (Power-up Sequence) LED Indicator (Operating Conditions) Page 4 Power Control Panel Master Circuit -Breaker AC Power Input Local/Auto Switch Local/External Switch Page 5 Block Diagra
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.
7B SST Series Amplifier Rear Panel Input / Output Connections Fig 1 1/4" Phone plug 4 5 XLR type 2 1 3 RCA plug 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.
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 is 4 ohms.
7B SST Series Amplifier 2 1 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.
B 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.
7B SST Series Amplifier 6
7B SST Series Amplifier Typical Band-pass Noise Typical IMD Sweep Power supply artifacts are all below -95 dBu balanced input with 23dB (2v) gain shown 4 ohm 900w 8 ohm 600w dBu: dB relative to a reference of 0.7746 Volts Typical THD+N Harmonic Content The harmonic content of the 7B SST is all even order.
7B SST Series Amplifier Typical THD+N Sweep Typical Frequency Response 7BSST 8 ohm 600w 4 ohm 900w Graph shows that distortion is essentially unaffected by load. 2v balanced input shown.
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.
IMPORTANT SAFETY INSTRUCTIONS The lightning flash with arrowhead symbol within an equilateral triangle, is intended to alert the user to the presence of un-insulated “dangerous voltage “ within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the product.
