Moog Music MF-104Z Analog Delay - Manual (Page 9)

9
The DRIVE control adjusts the signal level at the delay circuit
input. With this control you can set the right input level for virtually
any instrument or line-level signal source. Turn this control
counterclockwise for strong signal inputs, and clockwise for weaker
sound sources.
The INPUT LEVEL light tells how strong the input signal is after
being adjusted by the DRIVE control. As the signal level increases, the
light goes from dark, to pale green, to bright green, to yellow-green, to
yellow-red, to bright red. When the light is green, the signal is below
the level that results in audible distortion. When the light is yellow,
some low order distortion may be audible, giving the sound a warm
analog quality. When the signal is strong enough to drive the light
into the red, the distortion at the output becomes more distinctly
audible.
There are two factors which you should keep in mind when
adjusting the DRIVE control.
1.The bypass signal is a faithful replica of your instrument signal, but
is buffered by the audio input circuit. As a result, if the DRIVE control
is turned up to where the INPUT LEVEL light stays red when you
play, the bypass signal may be audibly distorted. You can avoid
distortion of the bypass signal by adjusting the DRIVE control so that
the INPUT LEVEL indicator generally stays in the green and yellow
region, and goes red only on the loudest peaks.
2. The DRIVE control should be set while the BYPASS indicator is
green. When you switch the BYPASS indicator from green to red, you
may see the INPUT LEVEL indicator change color slightly. This is a
normal feature of the MF-104Z audio input circuitry.
Once you set the DRIVE control as described above, the input level
is optimized for best operation of your MF-104Z's circuitry. Do not
change the DRIVE setting except to tweak the input level or to
compensate for changes in the level of your instrument signal.
The OUTPUT LEVEL control adjusts the levels of the direct and
delayed signals that appear at the MIX OUT and DELAY OUT jacks.
This control does not affect the level of the bypassed signal, and it
does not affect the level of the signal that appears at the LOOP OUT
THE AUDIO LEVEL CONTROLS