Violectric PPA V600, User Manual

Page: 13 / 28

13
OPERATION
The following controls and displays are located on the front panel:
POWER SWITCH
The unit is turned on by means of the power switch. The blue LED
beneath the switch indicates that the unit is ready for operation.
GAIN SWITCH
The gain switch on the front panel allows easy signal gain control,
offering six possible settings: 30 / 36 / 42 / 48 / 54 and 60 dB. Gain is
set for both channels individually by means of a precision resistor array,
thus offering highly accurate stereo matching at lowest crosstalk.
Settings of 30...42 dB are usually suited for MM systems, while 48...60
dB are intended for the use with MC pickups. So-called 'high output MC'
systems are best operated at 42...48 dB gain.
As noise level rises proportional to gain, it is always recommended to
choose the lowest practical gain setting !
BALANCE CONTROL
By technical means, pickup systems usually don't present exact channel
balance, and even sophisticated systems can exhibit a channel
matching error of 1...2 dB. This can lead to a shifted stereo image