Madrigal Imaging Five Channel Amplifier manual Please read the following carefully

Single-Ended Bridging

3CONNECT THE BALANCED BRIDGING OUTPUT ADAPTER TO THE TWO BLACK OUTPUT TERMINALS

Connect one end of the Balanced Bridging Output Adapter to a black out- put terminal on one of the two channels to be bridged together, and then connect the other end of the Output Adapter to a black output terminal on the other channel. Make sure these connections are snug and secure. (If you need to use two channels of a different spacing—for example, two center channel in different amplifiers—you can use a heavy gauge speaker wire for this purpose.)

4CONNECT YOUR LOUDSPEAKER WIRE ACROSS TWO RED OUTPUT TERMI- NALS, ONE TO EACH OF THE TWO CHANNELS BEING BRIDGED

Please read the following carefully:

Connect the positive/+/red binding post of your loudspeaker to the red output terminal associated with the red (normal) side of the Input Adapter.

Connect the negative/–/black binding post of your loudspeaker to the red output terminal on the other side of the amplifier, the one associated with the black (inverted) side of the Input Adapter.

Following this connection convention preserves the polarity of the signal sent to the loudspeaker. In practice, the most important thing is to be con- sistent throughout the system, as inconsistency will result in out-of-phase loudspeakers. In turn, this results in unstable imaging and poor bass repro- duction. (The effect is not dangerous, but neither is it desirable.)

5CONNECT ONE OUTPUT CHANNEL OF YOUR PREAMPLIFIER TO THE IN- PUT OF YOUR BRIDGED AMPLIFIER

The female XLR at the junction of the Balanced Bridging Input Adapter is now the single input to this bridged pair of amplifier channels.

6POWER UP YOUR AMPLIFIER

Plug the amplifier back into the AC mains; press the power button to turn on the amplifier.

7REPEAT THIS PROCESS WITH YOUR OTHER AMPLIFIER(S)

If your preamplifier has only single-ended (RCA) outputs, a few details of bridged operation will differ from the discussion above, all pertaining to the con- nection of the preamp to the bridged amplifiers. For this discussion, we will as- sume that you are using a Madrigal Single-Ended Bridging Kit for each channel to be bridged. (Alternatively, you may have custom cables built using your preferred wire and connectors, being careful to follow the wiring diagram below.)

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