"
7B
SST
2"
Power Switch
The front panel label 'SST POWER', is an alternate action push button switch (push ON, push OFF) used to apply or
remove A/C line power to the soft start circuitry. Push in to initiate the power-up sequence. Push again and release to
power down the amplifier. ( Note: the rear circuit breaker must be on for the amplifier to power-up)
INTRODUCTION
Thank you for choosing the
7B
SST
2
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
The
7B
SST
2
is a single channel mono 600 Watt audio power amplifier. The
7B
SST
2
selects a balanced or single ended
input and a gain of 29dB or 23dB may be selected. The
7B
SST
2
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
7B
SST
2
may be activated by a remote control
voltage 4v to 12v A/C or D/C.
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 use the proper packing material. Ship the amplifier
only in the original packing material, as the unit is not insurable by carriers otherwise.
INSTALLATION
Ventilation.
The most important installation consideration is ventilation. The
7B
SST
2
amplifier is convection cooled.
Unrestricted air-flow across the
7B
SST
2
heat sinks is a must. For this reason do not install anything directly above it. Allow
3.5" (2u) to 5.25” (3u) inches of space above and to the sides of this amplifier. Do not install directly above other heat gen-
erating equipment. Should your instillation conditions be constricted, then additional forced air-cooling may be necessary.
Bryston can provide an optional fan package if required. Thermal shut 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 7B
SST
2
AMPLIFIER
(also see rear panel description )
S
peaker 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 offers speaker cables and amp interconnects
for your application. Check our website under products/cables (www.bryston.com) for more information.
A/C POWER
Before plugging in the power cord be sure your
7B
SST
2
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
7B
SST
2
should be suf-
ficient so as not to cause the circuit breaker to trip (15 amp min.). Note: the
7B
SST
2
when delivering maximum power into
a 4 ohm load, 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.
A/C POWER CONDITIONERS
Bryston urges caution in choosing a power conditioner for your audio/video system. Large power amplifiers can draw very
substantial current from the wall plug, and many so-called power conditioners can in fact hinder the supply of current by
inserting resistances in series with the line cord. However, there are now power conditioners that can reduce or eliminate
RF and 'hash' from the AC supply and may actually improve current delivery to your system. This type of power condi-
tioner (exemplified by 'TORUS' Power Conditioners) uses the energy storage in a large toroidal transformer to provide high
instantaneous power and reduce the substantial AC output resistance of the wall socket and house wiring. This resistance
can be in the range of 0.5 to 1 Ohm and is typically reduced to only a few milli-ohms by the Power Conditioner. That in turn
considerably reduces Voltage drop in the power line on high current surges and quite substantially increases the stability
of the power line improving audio (and video) focus, precision and clarity.
FRONT PANEL