Bryston 4BSST - Manual (Page 2)

3Bsst & 4Bsst POWER AMPLIFIERS
1
GENERAL INFORMATION
Introduction
Thank you for choosing an SST SERIES Stereo 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 3B SST
The 3B SST is a dual mono design 2 x 150W per channel audio power amplifier. Each channel selects a balanced or single
ended input. Each channel selects a gain of 29dB(1v) or 23dB(2v). The 3B SST includes ‘soft start’ power control circuitry
to eliminate high inrush currents when A/C power is applied. The power up or turn-on of the 3B SST may be activated by
remote control voltage.
Description 4B SST
The 4B SST is a dual mono design 2 x 300W per channel audio power amplifier. Each channel selects a balanced or single
ended input. Each channel selects a gain of 29dB(1v) or 23dB(2v). The 4B SST includes ‘soft start’ power control circuitry
to eliminate high inrush currents when A/C power is applied. The power up or turn-on of the 4B SST may be activated by
remote control voltage.
Warranty ( see back page for details )
Shipping Box & Packing Material
Please keep the original shipping box and all packing material. This will ensure the amplifier is protected in future transport.
In the unlikely event you have a problem and must return it for service you must use the proper packing material. Ship the
amplifier only in the original packing material, as the unit is not insurable by carriers otherwise.
Installation ( see rack mounting section if applicable )
Ventilation. The most important installation consideration is ventilation. All SST amplifiers are convection cooled.
Unrestricted air-flow across its heat sinks is a must. For this reason do not install anything directly above it. Allow 3.5’
(2u) to 5” (3u) inches of space above and to the sides of this amplifier. Do not install directly above other heat generating
equipment. Should your instillation conditions be constricted, then additional forced air-cooling may be necessary. Bryston
can provide an optional fan package if required. Any SST channels thermally shutting down during operation indicates
insufficient air flow, and a remedy must be found for cooling the amplifier. Provide a minimum 6” space to the rear of the
amplifier for ventilation and dressing cables to and from the amplifier.
Never operate the amplifier in a vertical position.
Wiring the SST amplifier ( also see rear panel description )
Speaker wires should be as short as practical. Use quality wire, and if runs are more than 3 meters use at least 12 gage
wire. The speaker binding posts will accept wire up to 3 gage in size. Bryston will custom build cables for your applica-
tion.
A/C power
Before plugging in the power cord be sure your SST amplifier is specified for the correct a/c voltage for your locality. The
voltage is listed on the label found at the upper right of the rear panel. The circuit feeding the 4B SST should be sufficient
so as not to cause the circuit breaker to trip (15 amp min). Note: the 4B SST when operated with both channels delivering
maximum power into 4 ohm loads, will consume all the available power in a normal household circuit, therefore a dedicated
electrical circuit may be necessary with this situation. Never lift the safety ground to the amplifier nor remove the ground
pin from the plug.
Power line conditioners will not improve the SST amplifier performance, in fact most of the time they restrict the flow
of current to the amplifier, reducing performance at higher output levels