Phantom Power; Pad; Gain - Yamaha Programmable Mixer 01 User Manual

18
Chapter 3: Mixer Functions
PHANTOM
MASTER
CH1~8
ON OFF
(+48V)

PAD

20dB
–16 –60

GAIN

ProMix 01 User's Guide

Phantom Power

Phantom power provides a +48V DC power source for condenser
type microphones. It is applied to XLR input channels 1 through 8.
The PHANTOM MASTER switch on the rear panel is used to turn it
ON and OFF. Phantom power is applied simultaneously to all eight
inputs. It cannot be set for individual inputs.
With phantom power set to ON, non-phantom powered micro-
phones, dynamic microphones, and balanced line-level sources can
still be connected to inputs 1 through 8. However, be careful with
unbalanced sources.
Pad
The Pad function attenuates input signals by 20dB. This is useful
when inputting high level signals that overload the input preamp. By
increasing the effective range of the GAIN control, high-level signals
can be adjusted accurately. Pad can be set individually for the 16 input
channels. The PAD switch at the top of each channel is used to turn
it ON and OFF: switch up for OFF, down for ON.
Gain
The GAIN controls are used to optimize the input channel signal lev-
els. Use them with the METER LCD function, which shows the input
signal levels. Ideally the level should be set relatively high and it's OK
for it to reach CLIP occasionally. If CLIP is reached often, however,
back off the GAIN control a little, otherwise signal distortion may
occur. The GAIN control should be set with some care, because if it
is set too low, the S/N performance will suffer, and if it is set too high,
unpleasant signal clipping and distortion may occur.