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INTRODUCTION:
Thank you for choosing the Bryston 2B
the operation of your amplifier. We consider you, our customer, to be Bryston's' most important resource, and your
opinion is very much appreciated. No warranty card is necessary to initiate your coverage. Refer to the back page
for detailed warranty information. Please save the original box and all packing materials. Always use the original
packing materials when shipping or moving the 2B
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BRYSTON 2B
AMPLIFIER DESCRIPTION:
The 2B
is a duel mono design power amplifier consisting of two totally independent amplifiers with +/-58V
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power supply modules. The Bryston 2B
power amplifier. Each 2B
single ended (RCA style) input. Each 2B
2 Volt input sensitivity (23dB gain). The 2B
(see Remote Power Control section.)
INSTALLATION SETUP and RECOMMENDATIONS:
Check the label next to the power input connector on the rear of the
complies to your local A/C voltage and frequency requirements.
The 2B
is a convection cooled amplifier and requires the installation to allow for un-restricted air flow through
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the heat sinks. We recommend maintaining at least 3 inches of clear space to the sides of the amplifier, and if pos-
sible that the 2B
be on its own dedicated shelf. Install only horizontally with logo up. The 2B
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be installed near other heat sources like heating vents or radiators. Equipment mounted above the 2B
maintain at least 3 inches of clearance. The 2B
(See 2B
INSTALLATION for more details)
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Bryston recommends that at least 6 inches of space be provided to the rear of the amplifier for properly dressing input,
output and power cables. Speaker cables should be as short as possible. Use quality cables of at least 16 gauge .
The 2B
binding posts will accept stripped bare wire, pin connectors, spade lugs or banana plugs. Use gold plated
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connectors for lowest contact resistance. After all input cables and speaker output connections are correctly made,
plug the power cable into the wall outlet. The power on/off switch is located on the front panel and is labeled 2B
Simply depress the switch to turn on and push again to turn off. The 2B
voltage trigger. (see Remote Power Control section.)
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 conditioner (exemplified by 'TORUS' Power Conditioners) uses the energy storage in
a large toroidal tranformer 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 milliOhms 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.
LED STATUS INDICATORS:
The 2B
uses tri-color LED's with green indicating NORMAL operation, FLASHING RED indicating overload or
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clipping, and ORANGE indicating thermal shutdown. Upon power-up the 2B
voltages stabilize, then the unit comes out of mute and the LED's turn GREEN.
Should the LED indicator flash RED or contain a substantial RED content when program is present, the program
INPUT level is too high and the output can no longer accurately follow the input (CLIPPING). This condition may
cause speaker damage if it continues. Reduce the input level until the 2B
passages in the program. Substantial clipping indicates the amplifier application will need either a more powerful
amplifier or more efficient loudspeakers.
Should the LED's turn ORANGE the 2B
heat sink temperature returns to a safe operating temperature. Thermal shutdown indicates the amplifier is incor-
rectly installed and a remedy must be found to provide better cooling for the amplifier.
. We welcome any suggestions you may have, or comments regarding
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will operate as a STEREO power amplifier or as a bridged MONO
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channel provides input switching and connections for balanced (XLR type) or
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channel provides sensitivity selection for 1 Volt (29dB gain) or
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has remote A/C power control using a low volt trigger input.
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has shut down due to overheating. The 2B
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.
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should not be installed in tight enclosed areas.
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and verify your amplifier
2B
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may also be powered on using a low
2
LED's will remain "RED" until all
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flashes RED only on the loudest
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will reset itself when the
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should not
should
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.
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