a brief description of the controls for the iBeam Multiac System.
are described in order of the diagram to the left starting at “Mix”
and moving counterclockwise.
Sweep : This is a deep and very narrow fixed depth sweepable filter.
The range of tuning is from off, for all practical purposes at full counterclockwise,
to 320 Hz at full clock-wise.
use: slowly sweep the Null (by rotating the knob from CCW to CW) until it
“grabs” and damps any feedback. The feedback should instantly
vanish as you hit the right frequency.
Switch : Changes the polarity of the signal to keep the guitar top
and the loudspeaker out of phase relative to each other.
Band EQ: Treble, Mid and Bass controls to help shape the amplified
sound. They are marked on the diagram by the first letter to distinguish them
from each other.
Volume : This is a master volume that will control the output from the guitar.
This volume is independent of the Mix so it will control the overall volume
without affecting the Mix.
Level : The battery has full power when this red LED is bright. Change
the battery when the LED grows dim. This LED also indicates whether or not
the power is on.
Power Indicator : When this green LED is lit, the Multiac is receiving
power from an external phantom power source that can only be supplied through
the XLR jack.
Jacks : The XLR and the 1/4” jack both turn on the battery
when plugged in and turn the battery off when removed. They can be used simultaneously
as well as individually.
Multiac can run off of phantom power supplied from an external source through
the XLR cable. Using phantom power will automatically shut off the battery.
Mix : This mixes the iBeam and the undersaddle pickup. With the slider
completely toward the neck, the iBeam is at full volume and the undersaddle
pickup is completely removed. With the slider completely toward the bridge,
the undersaddle pickup is at full volume and the iBeam is completely removed.
are a few EQ settings you might wish to try. Feel free to experiment and find
your own favourite settings and sounds.