14
The front panel consists of a variety of
controls and a modulometer. Starting
at the left of the front panel, they are:
o
The Main Rotary Switch
Powering the PL–L and input
selection is provided through the main
rotary switch on the left–hand side of
the front panel. This 6–position rotary
switch turns the PL–L on and off as
well as facilitates selection of all input
sources. The positions of this main
rotary switch corresponds with the
following labels, clockwise from top to
bottom:
“
OFF
” – No power is supplied to any
audio stages. A red stripe is printed
on the backing plate in the space
occupied by the switch handle to alert
the user of having switched the unit
from the “OFF” position.
“
LINE A
” – Line A input is selected.
Power is supplied to all active
electronic stages. A 15–second mute
function engages when the main
rotary switch is activated to this
position to eliminate clicks and pops
and surge voltages at the output
stage. This stays identical if from
power off line B, C or D was selected.
“
LINE B
” – Line B input is selected.
Power is supplied to all active
electronic stages.
“
LINE C
” – Line C input is selected.
Power is supplied to all active
electronic stages.
“
LINE D
” – Line D input is selected.
Power is supplied to all active
electronic stages.
“
FULL CLOCK WISE
POSITION
”
“R”
This is the position for the remote
control. In this position by remote
control, the different line inputs as well
as power ON or OFF can be selected.
o
Mono/Stereo switch
A toggle switch to the right of the main
rotary switch on the front panel allows
the selection of mono or stereo
operation.
o
Volume and Balance
Potentiometers
Output level gain for both channels
can be controlled via the volume
potentiometer. The balance
potentiometer on the front panel
permits to balance the right and left
channel in a range of +/- 6 dB. The
scale of the volume potentiometer is
calibrated in a logarithmic–scale and
represent the amplification of the input
amplifier, before the modulometer, for
both channels.