Using The Low Cut Filter; Using The Tube Process; Using The Enhancer - Samson C.valve C Class Owner's Manual

Operating The C valve
Using the Low Cut Filter ( continued)
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LOW FREQUENCY
You can set the exact frequency to start attenuating the low-end using the LOW
FREQUENCY control knob. Be sure that the LOW CUT filter switch is engaged
as described in the previous section. The variable LOW FREQUENCY rotary
knob allows you to set the low-cut filter to operate at any frequency from 18 to
300Hz.

Using the Tube Process

The C valve features a 12AX7 vacuum tube for adding extra harmonic content to
the signal. It produces a subtle amount of even order harmonic distortion (the dis-
tortion we like), the amount of which can be controlled by the SATURATION con-
trol knob.
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SATURATION
Use the SATURATION rotary control knob to adjust the amount of "Tube
Process". Start with the SATURATION knob turned all the way down and slowly
raise the control until you have the amount of "Tube Process" that you want.
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VOCAL EQ
The C valve features a pre-set equalization curve for "sweetening" your vocal, or
for that matter, your instrument signal. The VOCAL EQ is a "shelving" equaliza-
tion curve that lifts the high frequencies by 6db starting at 10 kilohertz. When
you press the VOCAL EQ switch to the in position, the green LED will illuminate
and you will be adding some airy top-end to the signal.
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LIMIT
In order to help set, and keep, a good signal level, the C valve features on on-
board limiter circuit. A limiter is a type of dynamics processor that automatically
controls the gain of the signal by setting the maximum level that the signal can
reach. Using a limiter will help you avoid unwanted peaks or overloads in the signal, which can sometime
cause undesirable distortion. When the LIMIT switch is pressed in, the yellow LED will illuminate indicating
the C Valve is limiting the signal.
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ENHANCER
The C valve's ENHANCER will restore the high frequency content that can sometimes be lost when high gain
reduction is applied from the limiter circuit. The enhancer circuit works by applying an equalized signal to the
control voltage that is used in the LIMIT circuit. The equalized signal adds high frequencies back to the con-
trol voltage so that the limiter works with a little less effect on the high frequency content. The result is a
restoration of the high frequency even if the LIMIT circuit is heavily active, so you get a thick sound that's not
dull.
Use the ENHANCER in conjunction with the LIMIT circuit, by pressing both the ENHANCER and LIMIT
SWITCH in. The ENHANCER is active when the switch is in and the yellow LED is lit.
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