jbpjr Posted June 8, 2009 Share Posted June 8, 2009 haven’t heard of these being recommended or used much for multi channel in residential, other than powering subs. looking at amps and just wondering if these should be considered. thought i’d ask over here in 2-channel since they seem to be more widely used. any reasons why these amps won’t work well for home theater use? thanks Quote Link to comment Share on other sites More sharing options...
Saturn5 Posted June 8, 2009 Share Posted June 8, 2009 I've used a QSC amp on my RF-7s and love it. I've recently added an Outlaw 5 channel amp for my surround system, but when I upgrade to a 7.1 setup, I'll probably put my RF-7s back on the QSC. Quote Link to comment Share on other sites More sharing options...
Zen Traveler Posted June 8, 2009 Share Posted June 8, 2009 This may help: http://forums.klipsch.com/forums/p/78634/779998.aspx#779998 Quote Link to comment Share on other sites More sharing options...
Arky Posted June 9, 2009 Share Posted June 9, 2009 This forum talked me into buying the QSC plx, should have bought three at the price Musician's Friend had at the time. Quote Link to comment Share on other sites More sharing options...
tigerwoodKhorns Posted June 9, 2009 Share Posted June 9, 2009 I was able to do a direct comparison between a QSC PLX amp and a pair of Bryston 7B ST's on some very high resolution speakers (B&W's). The QSC did very well considering the price. Midrange vocals sounded more natural on the Brystons and overall more detail on the Brystons, but that said, the PLX was 1/6th the used price of the Brystons and abot 1/12th the price of new Bryston amps. And, don't take this the wrng way, you may not notice the difference on speakers with less resolution than the BW's. In other words go for it. I use a QSC 1202 in my office 9 hours a day with Musical Fidelity gear and a nice pair of EAR Design 5's. Great amp that had some serious authority with my old K Horns. Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted June 9, 2009 Share Posted June 9, 2009 They work great in a multi-channel setup. Be sure to swap the fans for quieter ones and give them ventilation. I use the QSC's with the Reference 7 series and absolutely love them. It's a great match, they're a very smooth amp with tons of wattage for the dynamic swings that you get with HT. Quote Link to comment Share on other sites More sharing options...
jbpjr Posted June 9, 2009 Author Share Posted June 9, 2009 thanks for feedback and info Quote Link to comment Share on other sites More sharing options...
jacksonbart Posted June 9, 2009 Share Posted June 9, 2009 They work great in a multi-channel setup. Be sure to swap the fans for quieter ones and give them ventilation. I use the QSC's with the Reference 7 series and absolutely love them. It's a great match, they're a very smooth amp with tons of wattage for the dynamic swings that you get with HT. nice set up. I plan to move to a seperate processer which can handle balanced interconnects with Crown in the near future to replace the Denon I am currently using. Quote Link to comment Share on other sites More sharing options...
Coytee Posted June 9, 2009 Share Posted June 9, 2009 I've got a couple of K2's. One nice thing about them is they are convection cooled....NO FANS!!! [Y] Quote Link to comment Share on other sites More sharing options...
jacksonbart Posted June 9, 2009 Share Posted June 9, 2009 I am not sure about QSC, I have only had the fan come on once and it was not at a volume for a period of time I am not likely to repeat. I also have the advantage that the back part my my home theater run next to a utility closet which is where I would set up the seperate amps anyway out of site. Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted June 9, 2009 Share Posted June 9, 2009 nice set up. I plan to move to a seperate processer which can handle balanced interconnects with Crown in the near future to replace the Denon I am currently using. Thanks. Are you going Integra, Anthem???? Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted June 9, 2009 Share Posted June 9, 2009 I am not sure about QSC, I have only had the fan come on once and it was not at a volume for a period of time I am not likely to repeat. I also have the advantage that the back part my my home theater run next to a utility closet which is where I would set up the seperate amps anyway out of site. The PLX2's fans run constantly and will kick up to a higher speed if necessary. With the aftermarket fans, they're virtually inaudible. Quote Link to comment Share on other sites More sharing options...
Deang Posted June 9, 2009 Share Posted June 9, 2009 Teach us about the fans -- where did you get the replacments and what did you use? Are they a pain to install? Quote Link to comment Share on other sites More sharing options...
jbpjr Posted June 9, 2009 Author Share Posted June 9, 2009 nice set up. I plan to move to a seperate processer which can handle balanced interconnects with Crown in the near future to replace the Denon I am currently using. are their compatibility issues when using pro sound amps with consumer level processor/receiver? do the xlr to rca adapters cause problems? Quote Link to comment Share on other sites More sharing options...
jacksonbart Posted June 9, 2009 Share Posted June 9, 2009 nice set up. I plan to move to a seperate processer which can handle balanced interconnects with Crown in the near future to replace the Denon I am currently using. are their compatibility issues when using pro sound amps with consumer level processor/receiver? do the xlr to rca adapters cause problems? IMO if you use amps that take balanced inputs, then use a pre/processer that does too. ie used balanced interconnects straight through. Others will disagree, its the way I am personally gonna go and their are many pre/processers on the market that handle balanced. Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted June 9, 2009 Share Posted June 9, 2009 Teach us about the fans -- where did you get the replacments and what did you use? Are they a pain to install? I got the 24 volt replacements from Digi-Key, pn P9739-ND. The old fans unplug from the circuit board. I made a connector using some single pin connectors that I had. They're about the size of a portable phone battery plug. I could have just cut the wires and soldered the new ones in but I wanted to keep the old fans and plugs intact. Someone with your skills should have no problem. I'll post a couple of pics. the amps have to be flipped over on their tops to dis-assemble. They're upside down for some reason. The first pic is with the cover off. Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted June 9, 2009 Share Posted June 9, 2009 Here's one with the cardboard air deflector lifted up. You can see the top of the fan at the bottom of the cardboard deflector. Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted June 9, 2009 Share Posted June 9, 2009 This is with the deflector removed. The fan is held in place with plastic push pin type retainers. Use care when removing so you don't tear the cardboard. You can see the circuit board, where the fans plug into, next to the fan. Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted June 9, 2009 Share Posted June 9, 2009 are their compatibility issues when using pro sound amps with consumer level processor/receiver? do the xlr to rca adapters cause problems? My amps and pre/pro both use XLR's. No adapters necessary. Quote Link to comment Share on other sites More sharing options...
tigerwoodKhorns Posted June 9, 2009 Share Posted June 9, 2009 The pro amps take a preamp that has some kick to drive themt o full potential. There is a guy in Denver who will change teh input resistors to make them an easy load for lower powered preamps. Google it. Here is a link: http://www.talkbass.com/forum/showthread.php?t=103505 As far as teh whole RCA / XLR thing, using an RCA to XLR cable will reduce noise in your system. I learned this reading white papers on Jensen Transformer's site. My amps do not have a gound lift switch like my old ones and they have a huge hum when just plugged in to the wall and using RCA inputs. I changed to XLR input and just like the site said, it did work. That said, if you can go with XLR output to XLR input do so. My preamp, which I will not change, only has RCA outs, so I run them into my power amp XLR inputs. works very well. 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.