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factory source unit /
factory amplifi er
8-Channel LOC
portable
media player
ZXSUM8
remote
low-level signal
to amplifi ers
ZXSUM8 internal
switch settings
subwoofer channel
tweeter channel
mid channel
mid-bass
channel
OPERATION
Maximum LED: This LED will illuminate when the signal level is slightly below clipping. When the ZXSUM8 input
levels are properly set, this LED will fl icker when your stereo is operating at full volume.
Channel Sum LED: This LED will illuminate when the corresponding channel is being summed to Channel 1.
See the CONFIGURATION section for further details.
Level Adjustment: Turn the gain on your amplifi ers to the lowest setting and disconnect them from the
ZXSUM8. Turn your source unit to approximately 3/4 volume. Adjust the level controls on the ZXSUM8 until the
MAXIMUM LED is fl ickering. Turn your source unit to minimum volume. Reconnect your amplifi ers and test your
system. You may wish to readjust the levels on the ZXSUM8 to taste.
Remote Turn-on: Connect the remote turn-on lead from your source unit to the REMOTE IN terminal on the
power connector. If a remote turn-on lead is not available, a 6V DC offset from Channel 1 will be detected when
your source unit has been turned on. The REMOTE OUT terminal will then have +12V out for turning on other
devices. Use 18 gauge or larger wire.
2010 ZXSUM8 RevC.indd 72010 ZXSUM8 RevC.indd 7 12/28/2009 11:19:05 AM12/28/2009 11:19:05 AM