Lui Posted July 18, 2016 Share Posted July 18, 2016 (edited) Hello everyone, I own the RC64II center speaker and have it connected to a Yamaha Aventage 1040. When looking at the woofers I noticed that the left-most one is jumping much more than the other three. I don't think that this is normal. Is the speaker broken? How are the woofers wired so that this even is possible? Can this be fixed? To make things clear, here is a video: https://www.dropbox.com/s/rgm39rdtmrnzjdr/WP_20160718_002.mp4?dl=0 I hope anyone can tell me what the problem is. Greetings, Lui Edited July 18, 2016 by Lui Quote Link to comment Share on other sites More sharing options...
mustang guy Posted July 18, 2016 Share Posted July 18, 2016 (edited) That's crazy. I would have that speaker apart by now if for no other reason than to figure out what the heck could even cause that. Are the other 3 woofers even moving? Could the daisychained wire be disconnected after that woofer? I don't know how it is wired up, but that's what I would suspect. Also, could the polarity on only that driver be reversed? It would be 3 against one. Edited July 18, 2016 by mustang guy Quote Link to comment Share on other sites More sharing options...
Lui Posted July 18, 2016 Author Share Posted July 18, 2016 Yes, the others are moving too. One theory I had was that the others are just moving passively, but you can feel that they are driven by themself and playing just more gentle. Quote Link to comment Share on other sites More sharing options...
babadono Posted July 18, 2016 Share Posted July 18, 2016 Dang.. now you're gonna have me checking mine Quote Link to comment Share on other sites More sharing options...
babadono Posted July 18, 2016 Share Posted July 18, 2016 Just looked on Klipsch website. It's 4 active woofers, I thought maybe 2 were passives but no, all 4 active. But they spec two crossover freqs even though its a 2 way speaker. So 2 of the woofers cross to the hi freq horn at one of these freqs and the other 2 at a different freq ? Or is this just a mistake in the specs? Quote Link to comment Share on other sites More sharing options...
derrickdj1 Posted July 18, 2016 Share Posted July 18, 2016 (edited) The 64 is a tapered array setup between the 4 woofers. If one is moving more than the other 3, something is wrong with the speaker. Contact Klipsch for guidance. Edited July 18, 2016 by derrickdj1 Quote Link to comment Share on other sites More sharing options...
willland Posted July 18, 2016 Share Posted July 18, 2016 The 64 is a tappered array setup between the 4 woofers. Yes the RC-64II is a tapered array and is considered a 2.5 way speaker. At it's lowest frequencies, all woofers are engaged up to 1100Hz and then handed off to the two inner woofers where those woofers hand off to the horn/compression driver at 1400Hz. With that said, it should never be just one woofer engaged, two or four or none. Bill 1 Quote Link to comment Share on other sites More sharing options...
Paducah Home Theater Posted July 18, 2016 Share Posted July 18, 2016 (edited) Just looked on Klipsch website. It's 4 active woofers, I thought maybe 2 were passives but no, all 4 active. But they spec two crossover freqs even though its a 2 way speaker. So 2 of the woofers cross to the hi freq horn at one of these freqs and the other 2 at a different freq ? Or is this just a mistake in the specs? If they all played the same frequency, you'd have major comb filtering problems. The higher the frequency, the closer the center of the drivers have to be. If you're going to spread a center out that much, the outside drivers need to play at lower frequencies or else they'll just cancel each other out at some frequencies if you sit off to the side at an angle. That's why horizontal "RC-7ii's" don't work all that great off-axis, you've got a fairly high crossover, a big horn, and big drivers that are spread apart. Lots of comb filtering problems. Edited July 18, 2016 by MetropolisLakeOutfitters Quote Link to comment Share on other sites More sharing options...
derrickdj1 Posted July 18, 2016 Share Posted July 18, 2016 Lots of comb filtering problems. No big comb filtering problems with the RC 64 or 64 II as their design. These are excellent center channel speakers. Someone may have phase problems if the dialogue is a problem. It's not the speaker! Quote Link to comment Share on other sites More sharing options...
Paducah Home Theater Posted July 18, 2016 Share Posted July 18, 2016 Lots of comb filtering problems. No big comb filtering problems with the RC 64 or 64 II as their design. These are excellent center channel speakers. Someone may have phase problems if the dialogue is a problem. It's not the speaker! I was talking about when people take an RF-7ii apart and turn it into a horzontal MTM. The RC-64ii is good because of the different crossover points, otherwise it would be the same deal. Quote Link to comment Share on other sites More sharing options...
derrickdj1 Posted July 18, 2016 Share Posted July 18, 2016 Gotch! Quote Link to comment Share on other sites More sharing options...
mustang guy Posted July 18, 2016 Share Posted July 18, 2016 Just looked on Klipsch website. It's 4 active woofers, I thought maybe 2 were passives but no, all 4 active. But they spec two crossover freqs even though its a 2 way speaker. So 2 of the woofers cross to the hi freq horn at one of these freqs and the other 2 at a different freq ? Or is this just a mistake in the specs? If they all played the same frequency, you'd have major comb filtering problems. The higher the frequency, the closer the center of the drivers have to be. If you're going to spread a center out that much, the outside drivers need to play at lower frequencies or else they'll just cancel each other out at some frequencies if you sit off to the side at an angle. That's why horizontal "RC-7ii's" don't work all that great off-axis, you've got a fairly high crossover, a big horn, and big drivers that are spread apart. Lots of comb filtering problems. I would still like to see how those things are wired. Quote Link to comment Share on other sites More sharing options...
mustang guy Posted July 18, 2016 Share Posted July 18, 2016 I found this picture of the RC-64 II crossover. Check out the woofer connections. There are two red and two orange. I bet the reds are the inside two drivers for midbass and the orange are the two outside for low bass or vice versa. That being said, the driver on the far right should be moving the same amount as the one on the far left. 2 Quote Link to comment Share on other sites More sharing options...
babadono Posted July 18, 2016 Share Posted July 18, 2016 ^ good find MG Quote Link to comment Share on other sites More sharing options...
TasDom Posted July 18, 2016 Share Posted July 18, 2016 When looking at the woofers I noticed that the left-most one is jumping much more than the other three. Curious as to what song you were playing in the video? Good info also there Craig Quote Link to comment Share on other sites More sharing options...
TasDom Posted July 19, 2016 Share Posted July 19, 2016 (edited) Dang.. now you're gonna have me checking mine lol...I did too. All seem to be moving in unison Processor is set to mono by the way so only the RC64II is playing Edited July 19, 2016 by Tasdom Quote Link to comment Share on other sites More sharing options...
Scrappydue Posted July 19, 2016 Share Posted July 19, 2016 what the heck is going on with that thing? weird for sure. Dang.. now you're gonna have me checking mine lol...I did too. All seem to be moving in unison Processor is set to mono by the way so only the RC64II is playing i can picture you listening to this all the time dancing around the room. Quote Link to comment Share on other sites More sharing options...
TasDom Posted July 19, 2016 Share Posted July 19, 2016 i can picture you listening to this all the time dancing around the room Ha yeah right, not exactly my kind of music. Just some bass heavy stuff off youtube. Quote Link to comment Share on other sites More sharing options...
Scrappydue Posted July 19, 2016 Share Posted July 19, 2016 off topic but i actually made a video of my center playing full range the other day. ill have to try the bass nectar song one of these days when the house is empty. Quote Link to comment Share on other sites More sharing options...
TasDom Posted July 19, 2016 Share Posted July 19, 2016 ill have to try the bass nectar song one of these days when the house is empty. Good idea, wouldn't want them to see you dancing around... 1 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.