Rear Panel - Crest Audio CKd Series Owner's Manual

Rear Panel

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1. AC Power Cord
See Appendix for AC load requirements and circuit breaker ratings.
2. STO Connectors
These connectors can be wired to a contact closure for remote turn-
on/off and to other CKd/Ci/Cki/CK amplifiers for sequential turn-on
(STO). See Page 12.
3. Rear Panel Status LED's
Same as front panel status LED indicators.
4. "100V/70V/Low Z" Channel Mode/Gain Switch
This switch sets the amplifier's gain structure as "70V" constant voltage
(1.414V Sensitivity) or "100V" constant voltage (2.0V Sensitivity.) or
"Low Z" constant gain (x40 settings). This switch also sets thresholds
for IGM and ACL accordingly. In '100V' or '70V' modes, the 70Hz, 3
pole, high pass filter (by default) is automatically engaged. In 'LowZ'
mode, the HPF is disengaged (by default). See Page 14.
5. Channel Attenuators
Each channel has an attenuator knob to adjust the channel's output
from -∞ to 0 dB. When set to -∞, the channel is deactivated and the
'Active' LED will turn off. To improve power and thermal performance,
it is recommended to deactivate unused channels.
6. Amplifier Output Connectors
Barrier strips provide speaker level output connections. High
voltages are present at these terminals. Protective covers are
provided. Bare wire or spade lugs may be used to make barrier
strip connections. See Output Connections section for more
information.
7. Control Voltage Inputs
Each channel has a Control Voltage Input. Using a 1K Ohm
potentiometer across the +/- terminals, these inputs (by default)
control the volume of the corresponding amplifier channel. These
inputs can be further programmed using NexSys or NWare Software.
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CKd Owner's Manual
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Rear panel LED's assist
in troubleshooting from
the back of the rack.
Page 9