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Does subwoofer cable rating matter? - Page 2

post #11 of 12
Cheez, if you actually knew what cable you were talking about you would know that the one in question is a coax cable with tightly controlled impedance, it uses double layer shielding on the cable as well, and it is from a reputable company. Lots of people use Monoprice cables and they make some good stuff for great prices. This is actually the first time I have ever heard you say something accurate though, so congrats. Yes the wub will need a good, thick power cable. However I think your definition and mine of a good power cable are not the same, I dont recommend the OP buy a $10,000 power cord.
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post #12 of 12
You're not gonna lose enough signal strength over only 50ft to warrant any type of repeater. Not even close. Almost every cable I use is 50ft because I want flexibility for when I change my setup around.

A couple things you'll need to worry about and it's ESPECIALLY important for subs:
1) Interference from the wiring in the house. Try not to run the cable right next to any long stretches of house wiring, it can induce a hum in subwoofers. 60Hz is low enough that small speakers (like surrounds) can't reproduce it but a subwoofer is designed to reproduce this frequency.

2) Ground loops/ground offsets/phase differences between circuits. In North America, every house is fed two lines of 120VAC that are 180degrees out of phase. These two lines are "bridged" to supply the 220 appliances. Problem is, half of your house gets one leg, the other half gets the second, and that can cause a problem if your subwoofer is plugged into one leg and the receiver in the other. This can create a worse hum than just about anything if there isn't a very solid ground connection between the receiver and subwoofer. If you find you have a hum you can't get rid of, the only thing you may be able to do to get rid of it is to run a totally separate ground wire from the chassis of the subwoofer's amplifier plate to the chassis of the receiver. Usually this only needs to happen if the cables and the connections on the receiver and sub are worn/broken.
Edited by Cavi Mike - 11/15/13 at 5:29pm
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