Polk Audio LSiM705 LSiM Manual - English - Page 11
Standard Hookup, Wire Recommendations
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Standard Hookup Bi-Wiring & Bi-Amping If you decide to bi-wire or bi-amp, you must remove the jumpers between the terminal posts. Failure to do this could result in damage to your amplifier and loudspeakers. The binding post caps must be completely removed to remove the jumpers, which use ring terminals. There are color coded collars so you can identify which is (+) or (-) after you remove the caps. Bi-Wiring (see Figure 1) Bi-wiring can provide noticeable improvements in the overall transparency of your loudspeakers. Run separate speaker wires to the low and high frequency drivers from a single amplifier (the upper set of binding posts are for the high frequency drivers, the lower set of binding posts are for the low frequency drivers): after removing the jumpers, connect one set of speaker wires to the upper terminals on each speaker and one set of wires to the lower terminals. Connect the other ends of both wire sets to the same amplifier outputs. Bi-Amping (see Figure 2) Bi-amping allows you to use separate amplifiers for the high and low frequency sections of your loudspeaker for greater dynamic range and lower distortion. We recommend that your separate amplifiers have identical gain to preserve the speaker's voicing balance. After removing the jumpers, connect the speaker wires from the high frequency amplifier outputs to the upper set of terminal posts on each speaker. Follow the same procedure for connecting the low frequency amplifier outputs to the lower set of terminals. Remember to maintain correct wiring polarity (+ to +, - to -) in all connections. Wire Recommendations These recommendations are for all connections from the amplifier/receiver to each speaker: Runs Gauge Lengths up to 25' 16 or better Lengths greater than 25' 14 but less than 50' Lengths greater than 50' 12 but less than 75' Lengths greater than 75' 12 Figure 1: Bi-Wiring Figure 2: Bi-Amping For more information visit our website at www.polkaudio.com 11