5
XP-12_om_10.17
Operation:
In use the XP-12’s front panel controls and alphanumeric display
are quite straight forward, and intuitive. We encourage you to
become familiar with their operation prior to establishing any input
connections with this unit.
After the all the inputs and outputs are connected and double
checked, you can now turn on the preamp by means of the power
switch located next to the AC inlet.
The left most button on the front panel is Mute. Pressing this button
toggles between mute on and mute off. Mute on removes signal
from the output of the preamp.
The front panel mode switch cycles the preamplifier display through
2 different levels and off. These two functions are as follows:
Bright, Dim and Off. Using any functions with the display “off” will
momentarily bring the display back up to its dim setting.
The two Select switches (designated by left and right pointing
arrows) then alter the displayed active input, 1 through 5.
Input 5 is unique in that it is linked with the Home Theater (Unity
Gain) function. (The HOME THEATRE FUNCTION is discussed at
length later in this manual.) The two select arrows logically control
selections of the various inputs to the preamplifier.
Before selecting the theatre pass through (pass thru) option, it is
imperative that the input device on input number 5 has its gain set
to minimum. Failure to follow this precaution could result
in a volume level intolerable to both ears and speakers. (The
standard 2 volt source component, with the pre-amp set to 0 dB,
will drive most power amps to full rated output.)
As an added precaution when “pass through” is selected the
volume ramps upto 89. This is to prevent nasty surprises when
“pass thru” is selected accidentally. The ramp up sequence can be
stopped at any time by hitting any button on the remote.
The theater pass through function bears special attention, this
function is only available as direct access through the hand held
remote control. This function is associated only with input number 5
and has two positions selected with the “pass thru” button
on the remote; those two positions, on and off. This function
is useful in that it allows the preamplifier to function as a unity
buffer (0dB gain at volume step 89) for use with components that
best function with their own volume controls, such as surround
processors.
