Operation Manual
CH and CL Series Power Amplifiers
page 10
Mixer
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2.7.3 Model CH4 Stereo Mode
See Figure 2.12. In this example, Channel 1 is
wired to a 4/8 ohm load and Channel 2 is wired
to a 70V load.
Make sure the Mode switch is set to the “Stereo”
position. Set the Channel Operation Switch to
4/8 ohms on Channel1, and to 70V on Channel
2.
INPUTS: Connect input wiring for each channel.
OUTPUTS:
• Connect Channel 1 positive (+) speaker lead
to Channel 1 positive (+) terminal of amp.
• Connect Channel 1 negative (–) speaker lead
to Channel 1 negative (–) output terminal of
amp.
• Connect Channel 2 positive (+) transformer
lead to Channel 2 positive terminal of amp.
• Connect Channel 2 negative (–) transformer
lead to Channel 2 negative (–) output terminal of
amp.
Refer to Section 2.5 for output connector pin
assignments.
2.7.4 Model CH4 Bridge Mode
See Figure 2.13. In this example, a 4/8-ohm load
is connected in Bridge Mono across the positive
terminals of Channel 1 and Channel 2. Both
Channel Operation Switches are set to 4/8 ohms.
Make sure the Mode switch is set to the “Bridge”
position.
NOTE: When operating in Bridge-Mono
mode, turn down (full CCW) the level
control for Channel 2, as the Channel-1
level control works both channels.
INPUTS: Connect input wiring to Channel 1.
OUTPUTS: Connect positive (+) speaker lead to
Channel 1 positive (+) terminal of amp. Connect
negative (–) speaker lead to Channel 2 positive
(+) terminal of amp. Do not connect to negative
output terminals.
Refer to Section 2.5 for output connector pin
assignments.
2 Setup
Figure 2.12 Model CH4 Wiring for Stereo Mode
(Shown with No-Touch Cover Removed)
Figure 2.13 Model CH4 Wiring for Bridge Mode
(Shown with No-Touch Cover Removed)
8 or 4 ohms
70 V
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