Avi Brenner Posted July 31, 2018 Share Posted July 31, 2018 Hi, I have generally a klipsch setup with rp-280fa, rp-450c, and s-250s sorrounds, I also have rp-140sa pair and a pair of svs prime elevation speakers. I only have a 11.2 ch receiver (and a 7-channel, 200 watt amp for my front, center and sorround speakers). I was thinking of wiring my prime elevation speakers as back height channels, and wiring then wiring the rp-140sa and the height channels for the rp-280fa so the same output in parallel, and wondering if this makes any sense at all, would work, or is too crazy. Quote Link to comment Share on other sites More sharing options...
garyrc Posted July 31, 2018 Share Posted July 31, 2018 Stop! Somebody else with more technical background will give you more detailed information, BUT: If I remember correctly, wiring two identical speakers in parallel will halve the nominal impedance. So, two 8 Ohm speakers = 4 Ohms the amplifier will "see." You don't know how the impedance varies with frequency on those speakers, unless you have found a source. If it drops to, say, 3 Ohms at a certain frequency, two such speakers will cause the amp or AVR to "see" 1.5 Ohms at that frequency. I'm assuming that would cause overheating, clipping, shutdown, (fire???) or The Big Sleep. JBL used to have "Series by Parallel" wiring diagrams for some multiple woofer systems (like the big 4 woofer, horn loaded, ones they used in 70 mm Todd-AO theaters). They explained that Parallel halves the nominal impedance, and Series doubles it. But to make that work, one needs 4 identical speakers, I would think. At my level, we are getting into imponderable impedance. 1 Quote Link to comment Share on other sites More sharing options...
derrickdj1 Posted July 31, 2018 Share Posted July 31, 2018 For simplicity, if there is a way to wire things to a direct channel and avoid the series or parallel will work better. When wired together, the two set of speakers act as one and no additional surround benefit is achieved. Quote Link to comment Share on other sites More sharing options...
BornAgain Posted August 1, 2018 Share Posted August 1, 2018 If you have an 11.2 channel receiver then you should just connect to the back height channels on that. Quote Link to comment Share on other sites More sharing options...
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