HOW TO GET A
REAR CHANNEL OR SURROUND SOUND
ON ANY STEREO

(Hafler circuit installation:)

The first step is to locate both the Left positive lead AND the Right positive lead from the amplifier. Positive leads are usually color-coded red or have stripes or some other identifying mark. However, this is not always given. In the case of certain multimedia speakers, for example, it is necessary to take apart the unit containing the amplifier in order to make a connection to one of these positive speaker wires, since the wire does not leave the cabinet. The only other option is to use an additional amplifier connected in parallel at the source (in other words, spliced off the sound card) to drive the rear channel.

Once both positive leads have been located, either a single rear channel OR two Surround Sound style channels may be easily established. Merely connect using the diagram below. If only a single rear channel is to be connected, simply connect the speaker across both positive leads.
Rear channel/surround sound connection diagram

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