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Rear Panel
EFFECTS SEND LEVEL
1
This calibrated (0 – 10) control sets the level of signal being sent to external effects
and/or signal processors. Clockwise rotation increases the amount of signal being
sent; counterclockwise rotation decreases the amount. For the quietest operation,
the EFFECTS SEND LEVEL should be set as high as possible. Generally, the SEND and
RETURN levels should be set oppositely. If the EFFECTS SEND LEVEL is set low, the EF-
FECTS RETURN LEVEL (19) is set high to achieve unity gain. If volume boost is desired,
turn both controls to higher settings.
EFFECTS SEND / EFFECTS RETURN
2
These 1/4" mono (TS) jacks allow signal to be sent to and returned from external
effects and/or signal processors. Using shielded cables with 1/4" mono (TS) phone
plugs, patch from EFFECTS SEND to the input of the external device, and from the out-
put of the external device to EFFECTS RETURN. Only devices that do not increase signal
gain should be used in this effects loop (chorus, delay, reverb, etc.). If the footswitch
is used, the EFFECTS SELECTOR (33) switch must be depressed to activate the effects
loop. See the FOOTSWITCH section of this manual for explanation of switch operation.
EFFECTS RETURN LEVEL
3
This calibrated (0 – 10) control sets the level of signal being returned from external ef-
fects and/or signal processors. Clockwise rotation increases the amount of signal being
returned; counterclockwise rotation decreases the amount. Again, SEND and RETURN
levels should be set oppositely, with the SEND level being high and the RETURN level
low to ensure the quietest operation. By setting both the Send and Return higher, you
can use the effects button on the footswitch as a boost if you aren't using the effects
loop with effects.
REMOTE SWITCH
4
This seven-pin DIN connector is provided for the connection of the remote footswitch.
The footswitch cable should be connected before the amp is powered up. See the
FOOTSWITCH section of this manual for explanation of switch operation.
BIAS TEST TERMINALS
5
These terminals are provided to measure the bias of the amplifier's power tubes. A
knob behind the back panel grille allows for adjustment. Bias adjustment should only
be done by a qualified technician.
DAMPING SWITCH
6
This three-position switch allows adjustment of the amplifier's damping factor.
Damping is the ability of an amplifier to control speaker cone motion after a signal
disappears. A high damping factor (TIGHT) reduces cone vibration quicker than a low
(LOOSE) factor. This switch works much like the Resonance and Presence controls
on other Peavey amps, if those controls were turned simultaneously. If the DAMPING
SWITCH is changed, the volume of the amp will also change and require re-adjustment.
CABINET IMPEDANCE SWITCH
7
This three-position switch allows appropriate selection of speaker cabinet impedance.
If two enclosures of equal impedance are used, the switch should be set to half the
individual value. For example, two 16-ohm enclosures necessitate an 8-Ohm setting,
while two 8-ohm enclosures would require a 4-ohm setting. Minimum speaker imped-
ance is 4 ohms.
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