7
5
3
1 2 4
Controls And Fu n c t i o n s1. CIRCUIT BREAKER.
This protection device will trip if the line current exceeds the rating of the circuit breaker, causing the
amplifier to shut down completely. This operates the same as a standard line fuse, except that it is resettable
from the front panel after cooling down for a few seconds.
2. POWER SWITCH.
When this switch is engaged, the power turns ON, the PROTECT lights flash red and the Power indicators
illuminate. Be sure all connections are made and double-checked before switching the power amplifier on.
3. EXHAUST VENT.
Releases warm air pushed from heat sinks by fan.
4. CH1/ CH2 LEVEL CONTROL.
The 41 detent controls are used to adjust the input level of each channel. When the controls are fully
clockwise the amplifier operates at maximum gain. Turning the controls counter-clockwise attenuates the
input signal. See page 14 for instructions on how to move these controls to the back panel.
5. CH1/ CH2 STATUS INDICATORS.
STANDBY- illuminates yellow when Signal Smart Standby circuit has been activated. THERMAL-
illuminates red when excessive heatsink and/or transformer temperature has been detected. PROTECT-
illuminates red when the power switch is first turned on, or whenever there is a fault condition detected.
These fault conditions include excessive DC offset or over current at output (VI limit). DC output protection
is provided by a relay. POWER- illuminates green when power is on and amplifier is ready to operate.
SIGNAL- illuminates yellow when power is on and signal is present. CLIP- illuminates red when the output
begins to clip.
NOTE:The relays operate independently for each channel. Therefore it is possible for one channel to operate
normally while the other is in “protect” mode.
6. CH1/ CH2 LEVEL CONTROLS.
Optional rear panel placement.
7. INPUT SENSITIVITY SWITCH.
0.775V, 1.5V or fixed +28dB gain.
8. CH1/ CH2 INPUT CONNECTORS.
Neutrik™ combi connectors will accept either XLR or 1/4” TRS (tip-ring-sleeve) connectors. They can be
used with balanced or unbalanced signals (see input wiring on page 9 for more information).
6
710 11 12
9
8b.CH1/ CH2 INPUT CONNECTORS.
6 position barrier strip. Horizontal connection accepts 8mm spades. (see page 10 for more information).
9. FUTURE OPTION.
Knockout for connector (TRS232) for external computer monitoring.
10. SIGNAL SMARTTHRESHOLD CONTROL.
Sets desired signal level for activation of Standby circuit. (See page 12 for more information)
11. BRIDGED OPERATION.
The OUTPUT CONFIGURATION switch is used to select between NORMAL STEREO operation,
PARALLELMONO operation, or BRIDGED MONO operation. For NORMALSTEREO operation, use CH
1 and CH 2 inputs. For PARALLELMONO or BRIDGED MONO operation, use CH 2 input only (see page
11 for more information about Bridged Operation).
12. FAN.
Variable speed fan. Draws cool air in from back of amplifier, across heatsinks and vents out front panel.
13. CH1/CH2 SPEAKER OUTPUTS.
Multi-way binding posts are used to connect the loudspeakers to the amplifier outputs. The red terminals are
the signal connection (+), and the black terminals are the signal return connection (-). The black terminals
are internally tied to signal ground.
13b. CH1/CH2 SPEAKER OUTPUTS, BR VERSION.
4 position barrier strips. Horizontal connection accepts 8mm spades.
13c. CH1/CH2 SPEAKER OUTPUTS, SP VERSION.
Neutrik™ Speakon™ connectors plus multi-way binding posts.
14. POWER CORD.
Connect to a properly configured outlet providing the line voltage specified for your model.
8
8
13
14
8b/13b 13c
NEXT