Art DIGITAL MPA II Руководство по эксплуатации онлайн [7/24] 758131

with the DIGITAL MPA II for more detailed instructions on setting the Input Gain control for the best

results.

Input Impedance control

This knob controls the Mic/line input amplifier impedance. This function allows variable voicing of any

microphone.

Refer to the application section titled “Adjusting the Input Impedance” for more information on making

the most of this function.

The ¼” instrument input is NOT affected by this control, and remains high (>1M Ohm) impedance.

Low Cut Filter control

The Low Cut Filter is a single tuned High Pass Filter that is frequency tunable. The input signal can

be filtered to remove “pops” or other extraneous low frequency information. This control moves the

rolloff frequency from 10 Hz (fully CCW) to 200 Hz (fully CW). Since it is single tuned, it preserves

some low frequency content so its use is less obtrusive. It is especially useful in close mic’d applica-

tions.

Gain switch

The Gain switch is used in conjunction with the input gain control to adjust signal levels through the

DIGITAL MPA II. When depressed, the tube circuit provides 20dB more gain in the signal path. This

also has the effect of driving the tube harder and making the tube the dominant source of gain and

overload character.