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Please Note: Inserting a plug into the Return 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.
SPEAKER JACKS
Use an unshielded 2-conductor cable (NOT A GUITAR CORD!) to connect any speakers to your
Workingman's 4004. Use a high quality, heavy gauge cable of at least 18 gauge (the lower the gauge,
the heavier the cable). The total impedance of the speakers should be 4 Ohms or greater. This means
you can use one 4 ohm cabinet, two 8 ohm cabinets or four 16 ohm cabinets.
RECOMMENDED SPEAKER ENCLOSURES FROM SWR INCLUDE:
Workingman's 4X10T, Workingman's 1X15T, Goliath III, Son Of Bertha, and the Big Ben Subwoofer (you
can use any two of these as they are all 8 ohms).
You may use one of the following:
Big Bertha, Goliath Senior, Henry 8x8, Triad I (these are all 4 ohm enclosures, therefore, only one can
be used).
SPEAKER FUSE
The speaker fuse is provided to protect the power amplifier from a fault in the speaker cable or the
speakers themselves. It can also open (blow) if an impedance less than 4 ohms is used or in the unlike-
ly event of a power amp failure. Size and rating of the fuse is 3AG, 8AMP FAST BLO. Do not defeat the
purpose of this feature by using a higher rated fuse.
A/C LINE FUSE
The line fuse can open (blow) due to power surges or high powerline transients. This fuse will also open
in the event of an electronics failure inside your amplifier.
Correct size and rating of the Line (Mains) fuse: T7A 250V for 120V operation, and T4A 250V for 230V-
240V operation. DO NOT REPLACE THIS FUSE WITH ONE OF A HIGHER RATING. IT MAY VOID YOUR WAR-
RANTY AND DAMAGE YOUR AMPLIFIERS ELECTRONICS.
A/C LINE CORD RECEPTACLE
Accepts a standard A/C power cable, used with almost all current musical, professional and household
electronic devices. We recommend taking great care when packing up. Put the cable in your instrument
case, accessory case, etc. If it does become misplaced, replacement will be easy at almost any appli-
ance store, super market or the like.
Please Note: the rating for this cable is 3-conductor, 10 amperes. This is a rating of the current capaci-
ty of the cable, designated for higher power-drawing devices like amplifiers. If replacement is necessary,
or if you wish to buy a longer cable, look for the rating on the cable and be sure it is at least 10 amps.
WORKINGMAN'S 4004 • 12
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