6
The front panel “MODE” switch cycles the front panel display through three different
levels (Bright-Dim-Off) Using any control function of the XP-32 with the display “off”
will momentarily bring the display back up to the dim setting. The two input selector
switches (designated by left and right pointing arrows) cycle thru the active inputs, 1
through 5. The two additional inputs (home theater and tape) are selectable only
from the hand remote.
Before selecting the home theater pass through (pass thru on the hand remote), for
the fi rst time, it is imperative that the input device on the HT input have it’s gain set to
zero Failure to follow this precaution could result in a volume level intolerable to both
ears and speakers. Selecting home theater bypass, sets the gain of the pre-amplifi er
to 0dB (gain of 1x)
When the Pass Thru function is selected volume control of the system is under control
of the device connected to “Pass-Thru” and the XP-32 is essentially invisible. When
Pass-Thru is selected the display will show “PASS THRU” and the volume will quickly
ramp from 000 to 179 in both right and left channels (each step representing 1/2 dB)
Volume step 179 represents the afore mentioned 0dB gain for use with components
such as a home theater processor that best function with their own internal volume
controls. (NOTE: you may set any numbered input to “Unity” (0dB by manually
selecting an indicated level of 179 on the XP-32 display
The electronic volume control of the XP-32 allows for 100 dB range in 0.5dB steps and
is driven by a micro controller, reading an optical encoder serving as the front panel
volume control. Assuring precise level steps with an absolute increment of 0.5 dB. This
allows for accuracy and channel to channel tracking that is not available in more
traditional volume controls and preserves high common mode rejection of signal in a
true balanced circuit.
Note: You may need to be at step 80 or 100 before you can hear anything depending
on your system.
Don’t be afraid to turn the volume up to 120, 150 etc. The volume control is an
attenuator so the higher up you use it the more of the original signal is used.