philly0116 Posted May 26, 2014 Share Posted May 26, 2014 (edited) Can anyone suggest a suitable speaker baffling for inside a speaker cabinet? Thanks!! Edited May 27, 2014 by philly0116 Quote Link to comment Share on other sites More sharing options...
wvu80 Posted May 27, 2014 Share Posted May 27, 2014 (edited) baffling? I'm not sure what you mean. You do realize, the dictionary definition of baffling is "to confuse, bewilder, or perplex." +++ I think of the baffle as the outside front of a speaker where the drivers poke through. I'm guessing you might be referring to some sound deadening material, such as fiber-fill, or some foam sheets. Edited May 27, 2014 by wvu80 2 Quote Link to comment Share on other sites More sharing options...
philly0116 Posted May 27, 2014 Author Share Posted May 27, 2014 Yep! Sound deadening, foam sheets, etc. Quote Link to comment Share on other sites More sharing options...
eth2 Posted May 27, 2014 Share Posted May 27, 2014 My Heresy II's have a foam piece in a U shape going over the woofers. I don't know if they were built that way or if the previous owner did that. Quote Link to comment Share on other sites More sharing options...
wvu80 Posted May 27, 2014 Share Posted May 27, 2014 (edited) My Heresy II's have a foam piece in a U shape going over the woofers. I don't know if they were built that way or if the previous owner did that. My CF-4's were exactly as you described, with the 3/4" foam, not egg-crate, and placed loosely in the enclosure in a "U" shape. It was not glued to the sides or back. I was told this is factory Klipsch setup. When I opened up my 20 year-old speakers, the foam still looked brand new, no deterioration at all. +++ I am not an expert, I just read the DIY discussion boards, so please consult others for your choices in final damping materials. I was told that fiber-fill works well in sealed speakers, a half-pound of fill for each cubic foot of speaker. Fiber fill can be bought from Parts Express type places, but I think most people to go to Wal-mart, as it is pillow stuffing. One pillow per two speakers, that sort of thing. It goes in fluffy, not stuffed, and it is best to distribute it to the entire enclosure, not just behind the woofs. http://www.walmart.com/ip/Mainstays-Microfiber-Pillow-2pk/14657392 http://www.parts-express.com/cat/cabinet-damping-material/311 I did another project where I used standard 3/4" foam sheet in my DIY box, then cut it to fit the box and attached it with a spray adhesive to all surfaces. It seems to be more common to use the foam in ported enclosures. I haven't used it yet, but using egg-crate foam makes sense to me due to breaking up internal reflections. +++ The only thing I can tell you definitively is that I thought my CF-4's (two 12" woofs and a 12" or so horn driver, MTM design) had that characteristic Klipsch sound with the harshness in the high frequency range. I took the two 3/4" foam sheets out of the bottom section (left two sections with foam on top) and used about a pound of Wal-mart fiber-fill at the bottom but away from the ports, and that harshness went away! I was left with plenty of low-end (it might have even enhanced the low end) and a MUCH more enjoyable sound overall. Edited May 27, 2014 by wvu80 Quote Link to comment Share on other sites More sharing options...
mungkiman Posted May 27, 2014 Share Posted May 27, 2014 Batting. Quote Link to comment Share on other sites More sharing options...
jason str Posted May 27, 2014 Share Posted May 27, 2014 Your local fabric store should stock polyester batting in either sheet or loose fill. Quote Link to comment Share on other sites More sharing options...
philly0116 Posted May 27, 2014 Author Share Posted May 27, 2014 Your local fabric store should stock polyester batting in either sheet or loose fill. I guess I was WAY over thinking all of this. I was thinking of gluing acoustic dampening foam to the sides and top. I never considered polyester batting or loose fill. Quote Link to comment Share on other sites More sharing options...
moray james Posted May 27, 2014 Share Posted May 27, 2014 polyester batting is a poor material for low frequencies. There is much you can research outside of speaker sites where this fact has been lost. High density fiberglass is the best available material for low frequency damping. This is for damping of the air volume inside of the cabinet. Fiberglass and other materials used to damp an acoustical volume will have no impact upon cabinet walls. Owens Corning 700 series is the choice of damping material for Architectural Acoustics because it is the best material . Low frequencies are very hard to damp in fact you will not even find measurements for materials below 100 Hz. . Foams and poly fill are only useful for damping from low mid and up.Hope this helps, best regards Moray James. Quote Link to comment Share on other sites More sharing options...
InVeNtOr Posted June 1, 2014 Share Posted June 1, 2014 i used some aircraft grade foam. it's also vibration dampning. check out some of my links in my sig, you will see it. works great. when i got my 7's the both had different "foam" in there and different amounts of it. figured, it couldn't be worse to change it! what i like about the vibration dampning, it took some sound issues out of the speakers. gave me a more solid cabinet. i would say Dynomat would best compare to what i have. (mine is .5" thick, not sure how think dynomat gets). Quote Link to comment Share on other sites More sharing options...
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