As mentioned previously in the ?Effects Blend Control? section of the manual, the Effects Blend circuit in
your Black Beauty 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 external 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 external effects 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 (?DRY?) position, no effects will be heard. This is nor-
mal.
Connecting An External Effects Device To The Black Beauty Effects Loop
Obtain two high-quality shielded patch cables, preferably as short as possible. Route them in the most
direct way possible. (Running patch cables over the top of the Black Beauty?as with any amplifier?can
induce hum in the cables and is not recommended.) Take one cable and connect it from the Effects Send
jack on the Black Beauty 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 Black Beauty. To set
levels, follow the instructions as previously listed in the ?Effects Blend Control? heading under ?Front
Panel Features.?
And, just so there isn?t any confusion, the Effects Loop has nothing to do with the SubWave? effect
onboard your Black Beauty. It only is used in conjunction with an external effects device.
Effects Send
This jack?s primary function is to send a post-EQ-and-SubWave? signal to an external effects device for
use in the Black Beauty 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 primary function is to complete the Effects Loop circuit by routing the post-external-effects
device signal back into the power amp of the Black Beauty, where it can be blended back in with the orig -
inal signal by using the Effects Blend control on the front panel. However, it can also be used as:
1. A power amp input jack. If, for some reason, you wished to bypass the entire front end and use
the Black Beauty strictly as a power amp, 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 Black
Beauty is now a powered speaker cabinet.
2. An input for pre-recorded music, for playing along and practicing purposes. To accomplish this,
insert a CD player or other sound source into the Effects Receive jack. (It must be a MONO 1/4"
plug that goes into this input, so you?ll have to use a stereo-to-mono cable adaptor of some kind.)
You can adjust the level of recorded music versus the ?live? sound of your instrument by using
both the Effects Blend control (the more clockwise the control, the more pre-recorded music
signal you?ll hear) and the volume control of your CD (or other) audio source. The mixed sound will
be heard through your speaker(s). Besides pre-recorded music, this is also an excellent way to
practice along with a drum machine.
Input impedance of the Receive jack is 27k Ohms minimum.
Note: Inserting a plug into the Effects Receive jack activates the Effects Blend control. The control
10 ? BLACK BEAUTY OWNER?S MANUAL |
ACEC
