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STEREO HEADPHONES JACK
By inserting a set of stereo headphones into this jack you will be able to monitor your sound or practice without disturbing your
neighbors. The headphone volume level is adjusted by the Master Volume. We suggest you begin with the Master Volume off (fully
counter-clockwise), then slowly bring up the volume to the desired level. If you hear some distortion in your headphones that is not
present with the speakers on, turn down the volume—you are probably overdriving your heaphones and could ruin them.
Any impedance headphones will work. However, optimum impedance is 75 ohms.
POWER SWITCH
Pressing the Power Switch to the ON position activates the Workingman’s 15 electronics as indicated by the LED above the
switch.
REAR PANEL FEATURES
EFFECTS LOOP
The Effects Loop is located POST EQ and PRE Master Volume in the signal path. The level appearing at the Send jack is con-
trolled by the Gain control on the front panel. If you are getting too hot a signal to the input of your effect, reduce the level of
the Gain control and raise the level of your Master Volume control to retain similar overall volume levels. By using the Gain,
Master Volume and Effects Blend controls, optimum performance should be easily obtainable with any effects device.
The Effects Loop is designed as a “sidechain” (parallel) function similar to those found on mixing consoles. Use of the Effects
Loop should greatly reduce noise generated by effects devices (as compared to in-line effects loops). Additional features of
this type of loop can be found below under the “Receive Jack” section.
Send Jack
Run a shielded patch cable from the Send jack to the input of your effects device. This jack may be used as an additional line
level output, in which case its level is determined by the setting of the Gain control.
Receive Jack
Run a shielded patch cable from the output of your effects device to the Receive jack.
One unique feature of the Receive jack is the ability to practice along with pre-recorded music. Insert a sound source into the
Receive jack (make sure it is a mono source). Use the Effects Blend control to mix the level of the recorded music with your
instrument’s level. The combined signal will be heard through the internal speakers or your headphones. The send jack is not
used.
NOTE: Inserting a plug into the Receive jack activates the Effects Blend control by receiving a “command” through the
ground created. Therefore, only a mono (2-conductor) phone plug should be used. If you have a stereo (3-conductor) plug
only, tie the ring and the sleeve (ground) together.
If you are not getting any “effect” through the speakers, check the position of the Effects Blend control.
EXTENSION SPEAKER JACK
Use an unshielded 2-conductor cable (NOT A GUITAR CORD!) to connect an additional speaker cabinet. Use a high quality,
heavy gauge cable of at least 18 gauge (the lower the gauge, the heavier the cable). The impedance of the speaker should be
8 Ohms or greater. If you wish to connect two additional cabinets be sure their combined load impedance is not less than 8
ohms (equivalent to two 16 ohms speaker cabinets in parallel).
Recommended speaker cabs from SWR are: Workingman’s 2X10T, Workingman’s 4X10T, Workingman’s
1X15T, Goliath III and Big Ben.
18 • WORKINGMAN’S COMBOS OWNER’S MANUAL