operation modes 4
stereo
For stereo (dual channel) operation, turn the amplifier off and set the mode select switches on the back panel to the OUT (extended) position. In this mode, both channels operate independently of each other with their input attenuators controlling their respective levels. For example, a signal at chan- nel A’s input produces an amplified signal at channel A’s output, while a signal at channel B’s input produces an amplified signal at channel B’s output.
parallel
For parallel (dual channel/single input) operation, turn the amplifier off and set the connector mode (Conn. Mode) switch to the parallel position by depressing the switch.Both input connectors are then strapped together and drive both channels with the same input signal. Because both connectors are strapped together, either connector can be used with a patch cable to drive the input of another amplifier. Output connections are the same as in the Stereo Mode. In Parallel Mode, both input attenuators remain active, allow- ing users to set different levels for each channel. Power and other general performance specifications are the same as in the Stereo Mode.
bridged mono
Both amplifier channels can be bridged together to make a very powerful
When operating in the | a |
| |
Bridged Mode, both |
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attenuators must be in |
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the same position so |
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the speaker load will be |
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equally shared between |
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the channels. |
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Unlike the Stereo | a |
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and Parallel Modes, in |
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which one side of each |
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output is at ground, in |
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the Bridged Mode both |
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sides are hot. Pin +1 is |
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Channel A’s side, which |
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is the same polarity as |
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the input.The minimum |
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nominal load impedance |
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in the Bridged Mode is 4 |
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ohms, which is equivalent |
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to driving both chan- |
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nels at 2 ohms. Driving |
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bridged loads of less |
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than 4 ohms will activate |
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GCL™ circuitry, result- |
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ing in a loss of power |
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and potential thermal |
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overload. |
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p.23
