Zapco C2K Owner's Manual - 4 Channel Controls
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4 Channel Controls
1. Source Select: Sets amp function to 4 channel or 2 channel, stereo. In
2 channel, stereo mode, the two front channels are bridged to a single
left channel and the rears are bridged to a single right channel, and
only the front input and crossover are used.
2. Xover Range Select: Shows frequency ranges for front range switch
(15) and rear range switch (7).
3. Front Function Selector: Configures the input to the front amp for left
channel bridged, stereo, or L&R sum mono (bass amp).
4. Front and Rear clip indicators: If they flash more than occasionally,
there is too much gain on the amplifier, and the signal is being
distorted.
5. Speaker Connectors: Marked for 4 channels at 2 Ohms minimum or 2
channels at 4 Ohms minimum.
6. Rear Function Selector: Configures the input to the rear amp for right
channel bridged, stereo, or L&R sum mono (bass amp).
7. Rear Freq. Range: Sets xover range for AUX out crossover [see range
select (2)].
8. Rear XO Freq.: Sets crossover frequency within range setting (6).
9. Crossover Function: Sets Rear crossover function to Hi, Low, or Full
Range.
10. Rear Input: When using amplifier in 4 channel mode.
11. Sub Filt: Subsonic filter to protect speakers and reduce distortion.
12. Input voltage selector: allows amp to be used with non-SimbiLink
systems if needed.
13. Front and Rear Amp Gains: These should always be in the full off
position and are used only to balance multi-amp systems. (Feel free to
contact ZAPCO for balancing instructions).
14. Identical to 7, but are for the front amps crossover.
15. Identical to 8, but are for the front amps crossover.
16. Identical to 9, but are for the front amps crossover.
17. Pre-Clip Indicator: When this light flashes, it indicates that too much
signal is being given to the amp. Check for excess gain in the preamp
or line driver, or, switch the voltage selector to its higher setting.
18. Front Input: This is the front input in 4 channel mode and it is the main
input in 2 channel, stereo mode.
19. Slave Output: this is a true ‘Passthrough” out to provide an unaffected
signal for another amplifier.
20. Unbalanced selector: Can be used w/voltage selector to run amp with
weaker, RCA signals, when SymbiLink
balanced lines are not
available.