Setting up the Stereo Power Amplifier

12

To bi-wire to A500 Loudspeakers

A500 Loudspeaker

A500 Loudspeaker

557 Stereo Power Amplifier

Set the BRIDGE MODE switch to the OFF position.

If necessary, remove the links bridging the LF and HF terminals on the back of each loudspeaker.

Connect the LF red and black terminals from each loudspeaker to the red and black terminals on the appropriate channel of the Stereo Power Amplifier, using twin loudspeaker cable.

Connect the HF red and black terminals from each loudspeaker to the other pair of red and black terminals on the appropriate channel of the Stereo Power Amplifier.

To wire to an A500 Loudspeaker in bridge mode

A500 Loudspeaker

557 Stereo Power Amplifier

ON

Input

You can use the 557 as a mono power amplifier, to obtain more than three times the power output, by wiring it in bridge mode.

Switch the BRIDGE MODE switch to the ON position.

Connect the audio input to only the LEFT INPUT or LEFT BALANCED INPUT.

Connect the loudspeaker between the red LEFT and RIGHT terminals, leaving the black terminals unconnected.