SWR Sound SWR WORKINGMANS 8004 - Manual (Page 10)

10 • WORKINGMAN’S 8004 T/O/P
Tuner Out
The Tuner Out function allows the user to plug their instrument tuner into this jack and “tune up” without
having to unplug and go back and for th from amp to tuner. In conjunction with either the XLR Mute switch
and the Speaker On/Off switch, you can achieve silent tuning between songs onstage during a gig. To use
this feature, connect a shielded patch cord from the Tuner Out jack on your Workingman’s 8004 to the
input jack on your tuner. Turn the amplifier on and you’re ready to go.
Effects Loop
As mentioned previously in the “Effects Blend Control” section of the manual, the Effects Blend circuit in
your Workingman’s 8004 is similar to that used on recording consoles, with the effects loop on a “side
chain” to the normal circuit. Unless the Effects Blend control is set to the full “wet” position, you will
always get the full sound of your instrument AND get the diversity an effects unit offers. Use of the effects
loop will reduce the noise generated by external effects units (as compared to using the effect between
your instrument and the input jack, though many people use it in this fashion anyway). This is because the
loop is after the preamp gain stages.
The Effects Loop is compatible with most individual or multi-effect devices. Many effects devices on the
market have input level adjustments. For instance, some units have a switch that you can set for either
–20 dB or +4 dB. In all cases, these should be set for 0 dB (if available) or +4 dB. The level going to your
effect is controlled by the Gain control on the front panel.
Note: The Effects Loop is used in conjunction with the Effects Blend control on the front panel.
When the Effects Blend control is in the full counter-clockwise (“Dr y”) position, no effects will be
heard. This is normal.
Connecting An Effects Device To The Workingman’s 8004 Effects Loop
Obtain two high-quality shielded patch cables, preferably as shor t as possible. Route them in the most
direct way possible. (Running patch cables over the top of the Workingman’s 8004—as with any amplifi-
er—can induce hum in the cables and is not recommended.) Take one cable and connect it from the
Effects Send jack on the Workingman’s 8004 to the input of your external effects device. Take the second
cable and connect it from the output of your external effects device to the Effects Return jack on your
Workingman’s 8004. To set levels, follow the instructions as previously listed in the “Effects Blend
Control” heading under “Front Panel Features.”
Effects Send
This jack’s primar y function is to send a post-EQ, pre-master signal to an effects device for use in the
Workingman’s 8004 Effects Loop. However, it can also be used as:
1. A line level output for use in conjunction with an additional (slave) power amp—such as SWR’s Power
750.
2. An unbalanced output suitable for recording or live mixing board purposes.
The output impedance of the Effects Send jack is 100 Ohms.
Effects Receive
This jack’s primar y function is to complete the Effects Loop circuit by routing the post-effects-device signal
back into the power amp of the Workingman’s 8004, where it can be blended back in with the original sig-
nal by using the Effects Blend control on the front panel. However, it can also be used as:
1. An additional power amp input jack. The Workingman’s 8004 comes equipped with a Power Amp
Input jack, but that input goes directly into the power amp at a preset level (as is typical in a “patch
point” setup). If, for some reason, you wished to bypass the entire front end and use the Workingman’s
8004 strictly as a power amp and still have the ability to use the Master Volume control, you could take
the output of whatever line-level audio source you wished and connect it to this jack. Then, set the
Effects Blend control to the full clockwise (“Wet”) position. Use the Master control to set the overall
level, and your Workingman’s 8004 is now a power amp only.