Connecting passive subwoofer to amplifier - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 2 Old 07-09-2019, 03:19 PM - Thread Starter
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Connecting passive subwoofer to amplifier

I have a passive subwoofer I am connecting to my home theater system. I just picked up an old pro sound amp, and will connect this to my receiver via the LFE pre-out. My question is about the speaker cable. It will be about a 15' length cable, and the sub will be crossed over at 80 hz by the receiver. Does it really make any difference what cable gauge you choose for this? Rolling off high frequency isn't really a consideration. I was probably just going to use some 16ga cable I have lying around. The amp is pushing maybe 300 watts into a single ported 12" sonosub.
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post #2 of 2 Old 07-09-2019, 05:11 PM
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Depends on the resistance of your driver.

According to this chart, for that distance, 16ga would be ok for 4 ohm and above but 2 ohm would necessitate 14ga wire.

https://www.cambridgeaudio.com/usa/e...speaker-cables

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