Bryston 9B?SST2, Руководство пользователя

Страница: 4 / 8

tem where there is already too much gain, for example where the volume control rotation is limited to the bottom half
of the control (7 to 12 o'clock) or less . Sensitivity at this gain setting is 2V
in
= 100w @ 8 ohms with signal-to-noise of
-112 dB) . A signal level of 2 .2v at the input is required to deliver the rated output of 120W into 8 ohms .
The
17dB
setting is used when the input voltage is fairly high or in ultra sensitive systems where the volume control
rotation range is still limited when using the 2v setting . Some pre-amps may be unable to deliver enough level to use
this setting . Sensitivity at this gain setting is 4V
in
= 100w @ 8 ohms, noise -115 dB) . A signal level of 4 .4v at the input
is required to deliver 120W into 8 ohms .
The noise is referenced in dB below rated output of 120 watts . Different input configurations result in slightly different
noise readings . The above noise ratings represent minimum readings, actual readings may be better .
6. OUTPUT BINDING POSTS
The RED binding post is connected to the amplifier output . Connect to this post the (+) terminal on the loudspeaker .
The BLACK binding post is connected to signal ground . Connect to this post the (-) terminal on the loudspeaker .
When the polarity switch is set for 0 degrees ( normal operation) the output at the RED binding post is in phase with
the input signal .
When the polarity switch is set for 180 degrees ( inverted operation) the output at the RED binding post is 180 degrees
out of phase with the input signal .
The Output binding posts provide three different interconnect options . Combinations may be used when bi-wiring . See
figure 2 below . Cables should be kept as short as practical and should never be terminated with connectors that may
become confused for AC power connectors . Cables should be dressed away from input and power cables .
SPEAKER CONNECTORS
BANANA PLUGS offer a quick disconnect option . Before inserting a banana plug into the binding post be sure to
tighten the post nut to avoid rattling and to provide full insertion of the banana plug . Gold plated locking banana plugs
are available from Bryston .
SPADE LUGS
provide high contact area and secure fastening . Lugs should be gold plated . See
diagram for details . Post diameter is 5/16’ ( 8mm ),lug width 5/8” (16 mm) . Gold plated spade lugs
are available from Bryston .
STRIPPED BARE WIRE up to 3 gauge can be inserted through the hole in the binding post and
held in place by tightening the post knob . Additional tightening pressure can be achieved using the wrench provided in
the slots of the knob . Do not over tighten or the binding post may become damaged . Note that copper wire is malleable
and may require further tightening after the initial installation .
FRONT PANEL DETAILS
9B
SST
2
Power Switch
The front panel recessed push button labelled
SST
2
POWER
is a push-ON/push-OFF switch used to apply or remove
AC line power to the 9B
SST
2
circuitry . Push in once to initiate the power-up sequence and again and the 9B
SST
2
will
power-down . ( Note: the rear circuit breaker must be on for the 9B
SST
2
to power-up)
LED Indicators
Each 9B
SST
2 channel has an LED indicator to monitor the following conditions:
U
nlit
: indicates channel has no power .
R
ed
: indicates channel is muted (power-up or power-down sequence)
G
Reen
: indicates channel operation is normal .
F
lashinG
R
ed
: indicates channel clipping .
O
RanGe
: indicates channel thermal shutdown .
POWER UP SEQUENCE
After pushing the 'SST POWER' switch, each channel LED will turn from unlit to red (mute) . When the power
supplies have stabilized the channel will come out of mute and the LED will change to green (normal operation) .
S
T
Y
O
R
N
B
5/16" 5/8"