Pass Labs XP-10 Car Amplifier User Manual


 
6
XP-10 Owner’s Manual
The front panel mode switch cycles the preamplifier and it’s display
through 2 different functions. These two functions are as follows:
Input, and Gain.
The two Select switches (designated by left and right pointing
arrows) then alter the displayed active function.
When the mode button is set to input (default mode), the left right
arrows select for inputs 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.
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 64) for use with components that best function with
their own volume controls, such as surround processors. When
the right-front and left-front outputs of the processor are routed
through input 5 of the XP-10 (with the gain of the XP-10 set for
Unity), the volume will be under full control of the processor and
the XP-10’s action will be totally transparent. When the user chooses
this setting the software sets the XP-10’s gain to the low gain setting,
regardless of how it was previously configured. When at Unity both
left and right level controls on the XP-10 will have a displayed value
of 64 (0 dB), and any previous balance settings will be lost. Both of
these default conditions are intentional, and intended to make the
most advantageous use of your source electronics. You may also set
any input to unity (0 dB) by selecting low gain and setting the volume
at step 64.
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. To further protect
your hearing and valuable audio equipment, we have designed this
product, so that the volume setting of the preamplifier will always
revert to zero as you change inputs from Pass Through to any other
input.
The XP-10 to our knowledge is unique in that its gain may be
attenuated to match the requirements of a wide variety of electronics