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Two wiring questions - IR and LFE

1035 Views 3 Replies 3 Participants Last post by  GreySkies
hi all, two questions regarding in-wall wiring:


1) I'm looking at a Buffalo IR connecting block and emitters. The docs for it talk about using 22g twisted pair for connecting the IR receiver to the block. I'm having a hard time finding 22g twisted pair. It all appears to be 24g twisted pair. Is there a serious performance degradation between 22g and 24g in this situation? My run will be about 25 feet.


2) I need to make an LFE run to two different subwoofers. My amp has one LFE out. Should I run wire out to the first wall jack, split it just before that wall jack, and run the split to the second wall jack? Or split it near the amp and run two separate runs of wire? Secondly, can someone point me to some good by-the-foot shielded line-level audio cable to use for LFE runs?


thanks.
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Quote:
Originally Posted by TangoUniform /forum/post/0


hi all, two questions regarding in-wall wiring:


1) I'm looking at a Buffalo IR connecting block and emitters. The docs for it talk about using 22g twisted pair for connecting the IR receiver to the block. I'm having a hard time finding 22g twisted pair. It all appears to be 24g twisted pair. Is there a serious performance degradation between 22g and 24g in this situation? My run will be about 25 feet.


2) I need to make an LFE run to two different subwoofers. My amp has one LFE out. Should I run wire out to the first wall jack, split it just before that wall jack, and run the split to the second wall jack? Or split it near the amp and run two separate runs of wire? Secondly, can someone point me to some good by-the-foot shielded line-level audio cable to use for LFE runs?


thanks.

TU:

1) A twisted pair could be a couple of wires from CAT5 cable run. As I recall there are several "twisted pairs" of wires in the cable. Easy, very cheap (inexpensive). The difference between 22g and 24g for this length would be almost none.


2) Many subwoofers are internally powered. Is your "amp" a HT receiver? If you are getting a "line level" signal from your receiver, I wouldn't think it would matter, other than the hassle of having two signals out. I have one "line level" signal to my outlet block by the subwoofer, and I could split it there to send one signal to the right sub, and one to the left, if I so chose. I could use a simple "Y" connector to do that. Would save having two line level signals from the receiver!


Now, if you are truly using a separate sub-amp to send its output to the subwoofers, most people of sound reinforcement ilk put their amps next to the speakers, NOT the receiver/signal source. Minimizes large signal losses. So again, it it would probably be easiest to split the signal from the receiver to the outlet block, then into the line level signal-one per sub amplifier.


I used bluejeans cable for my cabling subwoofer needs. An AVSforum supporter: Good place, good shipping, price policy, etc.


For my main speaker wire needs I used a 12g speaker wire that fit all my needs; size, able to use "in-wall", and good price. Unfortunately I noticed after I made the link it did go up a bit. I paid significantly less!


Best wishes,

Tom

Chinaclipper
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Thanks Tom! Apologies, I should have been more specific, but you answered my questions.


On 1) yep, I was looking at my CAT5e spool and wondering I could just use that rather than root around for 22g twisted pair wire. Looks like I'm set.


On 2) yes, sorry, it's my HT receiver. So in addition to the 5 powered speaker outs it has one LFE out on it. My subs are internally powered and integrated in my Def Tech Bi-Polar towers. So I'm running out of my HT receiver and into two powered subs. Your suggestion of just Y'ing it at the first outlet block is what I was thinking of doing. Thanks for confirming.


thanks again. And thanks for the reco to Blue Jeans Cable.
I just installed the same Buffalo equipment yesterday using 25-30 feet of 24ga cat5e. I have the IR receiver behind my AT screen (Dazian CCC) and tested it behind various samples of Shearweave. Works great.
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