Peavey X-VCA owner manual Mono input module, Features

mono input module 1

features

phantom power +48V

48 volts DC is applied to pins 2 and 3 on the mic-input XLR connector. This option is used with condenser microphones and active direct boxes that require an external DC voltage (phantom power) in order to operate.

The 48V switch should not be engaged when using standard (dynamic) microphones, or other sources that do not use phantom power.

a

pad

The mic-input signal is attenuated by 20dB to prevent some signals (e.g. kick drum or lead vocal) from overloading the preamp stage.The pad is used to bring a hot mic-input signal down to a controllable level.The 20dB pad is not functional when the LINE switch is depressed.

line

The input preamp circuit is set up to accept a mic-level signal. This signal is brought in via the XLR mic-input connector located on the rear panel.The 1/4" TRS input jack is disabled.

The input preamp circuit is set up to accept a line-level signal from either the XLR mic-input connector or the 1/4" TRS input jack, both located on the rear panel.When a plug is inserted into the 1/4" TRS input jack, the XLR mic-input connector is disabled.

polarity reverse—ø

This feature is used for correcting or minimizing polarity and phase related errors. For example, occasionally a balanced input connection is reverse-wired before it gets to the mixing console.This can happen in microphones, or in snake line inter- faces. By using the polarity reverse feature, this type of error can be corrected.

polarity inverted polarity not inverted

If the 48V phantom	+
power switch is
engaged, depressing this
switch disconnects phantom
power from the mic input
XLR.
When similar signals	+
from different chan-

nels are combined, phase cancellations can occur.

Reversing the polarity of an input signal often corrects such phasing errors.

p. 7