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Page 8 Model PA635
© 2001 Xantech Corporation.
4. C-BAL Command. Instantly returns the balance to the Center position (equal volume in each channel) from
any previous setting.
5. Balance Commands. When the Balance "arrow" buttons are pressed, the audio output will move to the left
or right (with a 2 dB/step reduction in the attenuated channel) with each left or right press.
NOTE: These commands do not ramp. That is, no change will occur if the BALANCE buttons are held
down continuously!
6. MAX-V. This command saves a maximum desired volume level for a zone or rooms (both LOCAL and
COMMON). The volume is first adjusted to what is desired as a maximum level. The MAX-V button is then
pressed, locking in this setting. This acts as a volume limiter for the system (e.g. to prevent the kids from
over-driving wall speakers, etc.).
To unlock the MAX-V setting, press the ADJ-OFF button (item #10).
7. MUTE ON/OFF. Separate ON / OFF Mute commands give positive mute action without knowing the actual
mute status. This is very helpful in a remote room where commands are sent “blind” without any visual aids
for status.
NOTE: In addition to MUTE OFF, the muted condition can be released with VOLume (item #8), Preset Level
(item #2) and Balance (items #4 & 5) commands.
8. Volume Up/Down Commands. When pressed in individual steps, volume increase and decrease is 2 dB
per step over a range of 0 dB (Max.) to -60 dB. The next step below -60 dB is OFF (> -90 dB). When
pressed continuously, volume level will change (ramp) continuously in 1 dB steps. See also MAX-V settings
(item 6).
NOTE: Volume action of the PA635 has been designed specifically to ramp more quickly in the DOWN
direction and more slowly in the UP direction.
9. Code Group Numbers. The PA635 is capable of being set to 55 different code groups, both individually as
amplifier pairs and collectively as a group.
Be sure to set the RC68+ to the same number!
It may be necessary to change the PA635 amplifier pairs to different code groups if you wish to address each
pair individually from the COMMON IR BUS (item #15, Fig. 3) or an external common IR bus network when
using other Xantech PA635's in large systems, to avoid mutual interaction.
Refer to the RC68+ instructions for code group setting procedures.
NOTE: As shipped from the factory, all amplifier pairs in the PA635 are set to code group number B0.
10. ADJ-OFF Command. This command unlocks a previous MAX-V setting. See also item #6.