Home Theater Direct user manual Connections, Connection Options, R8DT SUBWOOFER, Method A

R8DT SUBWOOFER

CONNECTIONS

When you make connections make sure the power switches of all components are off, including the subwoofer.

Audio Cables

If you are connecting your subwoofer into a system made up of separate components (preamps and power amps), you will need audio cables long enough to reach the subwoofer from the preamplifier and the power amplifier.

Speaker Wire

Typical speaker wire has a pair of separate conductors with insulating jackets that are molded together. We rec- ommend that you use 16-gauge wire for connecting the receiver to the front speakers.

Polarity

All speakers in a system must be connected with the same polarity. Speaker wire is marked for polarity so that you can identify which wire is the pair is which.

Polarity is shown by a color strip on the insulation, by ridged molded into the insulation or be the colors of the wires, one copper and one silver.

Strip the insulation from speaker wire ends to reveal the bare conductors before connecting to receiver, sub- woofer or speaker terminals.

Note: Always connect the red (+) terminal on the receiv- er to the red (+) terminal on the subwoofer, and the black (–) terminal on the receiver to the black (–) terminal on the subwoofer. The same is true for connecting the receiver outputs to the front speakers red (+) to red (+) and black (–) to black (–).

CONNECTION OPTIONS

Note: Choose Method A or Method B connection option. DO NOT combine them; choose only one.

Method A

This method provides the best sound quality and is pre- ferred over Method B. The preamp (variable line level) outputs from the receiver carry the full range of audio signal frequency and the R8DT will use the active crossover to filter out the mid- and high-range frequen- cies, those which the subwoofer is not designed to reproduce.

Note: If the subwoofer is plugged into a different electri- cal circuit from that which supports the rest of the audio system, a ground loop may result. This causes a 60Hz low-frequency hum. This can be eliminated by using the same electrical circuit or by inserting a ground loop iso- lation filter in line with the RCA cables.

Speakers

Receiver

Preamp

Output

RCA

Cables

Subwoofer

METHOD A

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