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WORKINGMAN’S 12
120 watt, 1x12 combo amplifier with tweeter. A little powerhouse. Great for both electric
and upright basses.
Speaker Complement:
(1) Custom Designed 12" SWR driver
(1) Custom Designed Piezo tweeter
Power Output: 120 Watts RMS, 160 Watts RMS @ 4 Ohms
(with 8 ohm extension speaker)
Impedance: 8 Ohms (internal)
Dimensions: 15.5" W x 22.25" H x 15.25" D
Weight: 50 lbs.
FRONT PANEL FEATURES
BALANCED DIRECT RECORD OUT
The Balanced XLR output is a true balanced output. No front panel controls affect its signal. The tone and output level are con-
trolled only by the instrument plugged into one of the input jacks. To use this feature, run an XLR (Cannon) cable from the
Balanced D.I. to the input of a tape machine, mixing console, etc. This output is also suitable for sending a signal to a house
mixer in live situations.
Wiring for the XLR connector is as follows: Pin 1 = ground, Pin 2 = +, Pin 3 = –. (American standard)
TO TUNER
The To Tuner send jack allows the user to connect their instrument tuner to the Workingman’s 12 without having to unplug and
go back and forth from amp to tuner to amp. Like the Balanced D.I. output, this feature is isolated from the rest of the circuitry
and no other controls other than your instrument have an affect on this feature. Being on an isolated sidechain also avoids
loading down of the instrument, which can cause a loss in dynamic range.
To use this feature, plug in a shielded patch cord from this jack to the INPUT of your tuning device. Turn the amp on and you're
ready to go. If you don’t want to monitor your sound while tuning, turn down the Master Volume control or position the selector
switch on the back panel to the “headphones” (middle) position.
INPUT JACKS
Two separate and independent input jacks are provided so that the best signal-to-noise ratio can be obtained without overload-
ing the preamp section. The Passive input has over twice the gain than that of the Active input. Both inputs can be used simul-
taneously without affecting the volume or tone of the other. One use of these inputs would be to plug your bass into the
Passive input and practice along with a drum machine by plugging it into the Active input. A more detailed explanation of these
inputs follows.
Passive Input
This input can and should be used if your instrument has passive electronics (no built-in preamp). Some pickups employ batter-
ies for operation and will work perfectly using this input. Technically speaking, this input should be used if your instrument has an
output voltage of 1 volt RMS or LESS. Consult the owner’s manual that came with your instrument or ask the manufacturer if you
are unsure.
NOTE: Generally speaking, you should try the Passive input jack first. If you hear a small amount of distortion and the
Preamp Clip LED is not activated, try using the Active input jack. Some passive pickups DO distort. Because of the hi-fi
nature of all SWR products, even the smallest amount of distortion originating at the source (instrument) may be heard.
WORKINGMAN’S COMBOS OWNER’S MANUAL • 7