D. Ryan Posted June 30, 2017 Share Posted June 30, 2017 So I have been running kg4s and kg 2.5s off the same channel for some time now, with two amps. Recently upgraded to rf7ii, I was contemplating a build of an rf7 horn and one 10" woofer in a custom cabinet. My biggest concern was a proper crossover. This would allow for a perfect match to my towers for the height speakers. Anyone have any insight on how I could make this build work? Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted June 30, 2017 Share Posted June 30, 2017 Someone who can do the math (not me) can figure out the crossover. I'd be more concerned with the box size as you have no T/S parameters of the woofer to go by. Quote Link to comment Share on other sites More sharing options...
D. Ryan Posted June 30, 2017 Author Share Posted June 30, 2017 Bump Quote Link to comment Share on other sites More sharing options...
derrickdj1 Posted June 30, 2017 Share Posted June 30, 2017 There are easier ways to match the RF 7 or 7 II to a FH speakers. Also, FH speakers are for ambience and don't need to be critically matched to the Mains. 1 Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted June 30, 2017 Share Posted June 30, 2017 5 minutes ago, derrickdj1 said: There are easier ways to match the RF 7 or 7 II to a FH speakers. He wants to build a center to match his mains (and heights), is how I read it. Quote Link to comment Share on other sites More sharing options...
derrickdj1 Posted June 30, 2017 Share Posted June 30, 2017 The RF 64 II will match the mains and many different speakers can fill the FH role. I don't even have Klipsch for FH and the match with the Main is perfect IMHO as well as the surround. A small disclaimer, the SC 99 will align the other speakers to the mains. I don' t know if Auddysee will do the same. Quote Link to comment Share on other sites More sharing options...
D. Ryan Posted July 1, 2017 Author Share Posted July 1, 2017 I use a rc64ii for center. These would not be presence speakers. They would be driven by the same main l/r signal. Basicly I would like to make a nod for a horn and 10" woofer. Basically a bookshelf version of an rf7. Quote Link to comment Share on other sites More sharing options...
moray james Posted July 1, 2017 Share Posted July 1, 2017 Klipsch already designed this loudspeaker and it's called an RB75 find a pair of them you can purchase parts for them, it uses a real pro comp driver and the whole thing is compact. Quote Link to comment Share on other sites More sharing options...
Frzninvt Posted July 1, 2017 Share Posted July 1, 2017 Why not just source a pair of RB-75's? Quote Link to comment Share on other sites More sharing options...
D. Ryan Posted July 2, 2017 Author Share Posted July 2, 2017 I was wanting a matching horn and 10" woofer. Trying to figure out the rf7ii throw on the driver so I could get the specs for cabinet harmonics volume and port size. The crossover is where I am hung up. Quote Link to comment Share on other sites More sharing options...
moray james Posted July 2, 2017 Share Posted July 2, 2017 it is the exact same horn and driver. just a smaller woofer, single 8" can play plenty loud. Sounds like a big project you are going to be getting into. Do you really think that you are going to do a better job than Klipsch did matching the RB75 to the RF7? If you are after more output then look to the matching centre channel loudspeaker those will push more air than a single ten and are voiced to match perfectly with the RF7. Those two 8 inch woofers will push half as much air again as a single 10 inch woofer can and have better mid response than a single10 inch will not only that but at crossover frequency an eight inch woofer matches the horn far better than a ten inch woofer does. You may be able too buy all the parts new I will look for the company in Florida who stocks factory parts and get back later. Good luck with your project keep us posted. http://www.klipsch.ca/products/rc-7-center-speaker 1 Quote Link to comment Share on other sites More sharing options...
pzannucci Posted July 3, 2017 Share Posted July 3, 2017 http://reconingspeakers.com/brand/klipsch/ You will need to do the crossover. Good starting point is https://www.diyaudioandvideo.com/Calculator/SpeakerCrossover/ Quote Link to comment Share on other sites More sharing options...
D. Ryan Posted July 9, 2017 Author Share Posted July 9, 2017 On 6/30/2017 at 9:34 AM, derrickdj1 said: There are easier ways to match the RF 7 or 7 II to a FH speakers. Also, FH speakers are for ambience and don't need to be critically matched to the Mains. Well I do not use them as presence speakers. They will be driven by the main l/r channel. Quote Link to comment Share on other sites More sharing options...
derrickdj1 Posted July 9, 2017 Share Posted July 9, 2017 You want a larger vertical sound stage like DD PL II z, Atmos, Auro 3D or Neo X. Does your current avr or processor have that function? You just may need an avr that does the newer formats. From a HT performance standpoint, there is no need for the FH speaker to have as large a horn or 10 in. bass driver. Now, if you are going to feed the FH channel the same signal as the front L/R speaker that is different. Normally in movies, the FH and Mains don't receive the exact signal. Quote Link to comment Share on other sites More sharing options...
jjptkd Posted July 9, 2017 Share Posted July 9, 2017 I second the use of the RC-7, great speakers that were designed and built to match the speakers you have leaving the guess work out of it and they can be found used for as little as $200 depending on location and condition. They are capable of very high output and a surprising amount of tight low-ish bass. 2 Quote Link to comment Share on other sites More sharing options...
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