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947443
OPERATION
General
The SMB-200 provides two modes of operation,
2-channel (100 Watts per channel) or 1-channel mono
(200 Watts bridged).
When the amplifier is in the 2 channel mode signals
are applied to both the channel A and B inputs.
Channel A and B outputs are connected to their
respective speaker loads. The output levels are
controlled by the channel input volume controls. In
the event that low frequency content is not required to
the speaker load, i.e. paging horns, the contour switch
may be placed in the “ON” position and frequencies
below 300 Hz will be reduced at a rate of 6 dBm per
octave. See Figure 2 for details.
When the amplifier is used in the bridge mode, the
mode switch located on the back of the amplifier is
placed in the “Bridged Amp” position. The input
signal is applied to Channel A. The speaker load is
connected between the Channel A and Channel B
2 ohm output terminals. The Channel A volume
control is used to adjust the volume level of the
speakers. In the event that low frequency content is
not required to the speaker load, i.e. paging horns, the
contour switch may be placed in the “ON” position
and frequencies below 300 Hz will be reduced at a
rate of 6 dBm per octave. See Figure 3 for details.
Clipping lights are provided on the front of the unit.
These lights will illuminate when the output signal
exceeds the power rating of the amplifier. There are
also 2 power lights located on the front of the unit
that will illuminate when the unit is connected to a
120 Vac power source and the power switch is in the
“ON” position. See Figure 1 for details.
TECHNICAL ASSISTANCE
When trouble is reported, verify that ac power is
being supplied to the unit and there are no shorts or
grounds on the speaker cabling. Assistance in
troubleshooting is available from the factory. You
should call from the job site and have a VOM (Volt-
Ohm meter), telephone test set and appropriate hand
tools available. Call (540) 767-1550 and ask for
technical support. Visit our website at
http://www.clarity-com.com.
CLARITY maintains service facilities in Roanoke,
VA. Should repairs be necessary, attach a tag to the
unit clearly stating company name, address, phone
number, contact person and the nature of the problem.
Send the unit to:
Repair and Return Dept.
Clarity
5614 Hollins Road
Roanoke, VA 24019-5056
TROUBLESHOOTING CHART
PROBLEM
POSSIBLE SOLUTION
No output.
1.
Verify ac power is being supplied to the unit and the power switch
is in the "ON" position and both power lights are illuminated.
2.
Verify that input signal is present at amplifier connection.
3.
Verify all speaker wiring (no opens, shorts or grounds).
Distorted output.
1.
Check input wiring for proper polarity connections.
2.
Verify that speaker load does not exceed amplifier rating.
3.
Verify input signal does not exceed input voltage rating.
4.
Verify all speaker wiring (no opens, shorts or grounds).
