USL CM-8E - Manual (Page 15)

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The DE-15 connectors on the surround channels are wired for stereo full-range operation. For
example, one DE-15 connector has Ls on channel A and Rs on channel B.
5.4 Rear Panel Connections
The rear panel connections are shown in the drawing below.
1. Power Inlet. 100 – 240VAC, 50/60 Hz, 300mA maximum.
2. Ethernet. 10/100Mbps
3. Amplifier Returns. Connect the positive side of amplifier outputs here if the DE-15
connectors are not used.
4. Lrs/Rrs DE-15F. Drives the rear surround amplifier with left rear surround on channel
A and right rear surround on channel B. Also provides amplifier returns (Vmon) for
amplifier output monitoring.
5. Spare DE-15F. The “spare” input (top DB-25 connector) drives channel A on this
connector.
6. Surround and LFE Terminal Block. These outputs can be used to drive amplifier inputs
if the DE-15 connectors are not used. This terminal block also has “Line Out”
terminals. This balanced output can drive an external power amplifier with the
selected audio signals without compression or equalization. Such an amplifier could be
used to drive a higher quality speaker than can practically be placed within the CM-8E.
7. Ls/Rs DE-15F. Drives the surround amplifier with left surround on channel A and right
surround on channel B. Also provides amplifier returns (Vmon) for amplifier output
monitoring.
8. LFE3/LFE4 DE-15F. Drives the LFE3/LFE4 amplifier with LFE3 on channel A and LFE4 on
channel B. Also provides amplifier returns (Vmon) for amplifier output monitoring.
9. LFE3/LFE4 Source Select Jumpers. Put both jumpers in the up position to drive these
outputs with the LFE input from the processor. Put both jumpers in the down position
to drive these outputs with the spare input from the processor.
10. LFE1/LFE2 DE-15F. Drives the LFE1/LFE2 amplifier with LFE1 on channel A and LFE2 on
channel B. Also provides amplifier returns (Vmon) for amplifier output monitoring.
11. Right Channel DE-15F. Drives the right channel amplifier. If there is a crossover before
the CM-8E, channel A is driven with the low band, and channel B is driven with the