Coytee Posted June 10, 2014 Share Posted June 10, 2014 I don't know what the mumps do...just that the new version of the 510 has them. 1 Quote Link to comment Share on other sites More sharing options...
moray james Posted June 10, 2014 Share Posted June 10, 2014 easy for anyone with a set of original to experiment with the new style just get some plasticine I imagine that Roy has made an improvement. Congrats on your new centre. Best regards Moray James.. 1 Quote Link to comment Share on other sites More sharing options...
djk Posted June 11, 2014 Share Posted June 11, 2014 Inside sharp corners=bad 1 Quote Link to comment Share on other sites More sharing options...
cradeldorf Posted June 11, 2014 Share Posted June 11, 2014 (edited) Inside sharp corners=bad 100% correct. Any sharp corners inside or out are bad. just like room treatments. i.e. Corner bass traps Edited June 11, 2014 by cradeldorf Quote Link to comment Share on other sites More sharing options...
The Dude Posted June 11, 2014 Share Posted June 11, 2014 So do you think they will be adding mumps to the K402. Quote Link to comment Share on other sites More sharing options...
PrestonTom Posted June 11, 2014 Share Posted June 11, 2014 So do you think they will be adding mumps to the K402. The mumps were added to the K-510 in order to control the dispersion down to a lower frequency. The K-402 does a good job controlling the dispersion because the beast is big. I am guessing the mumps would not be required. Quote Link to comment Share on other sites More sharing options...
Coytee Posted June 11, 2014 Author Share Posted June 11, 2014 I think this was once put to Roy (will mumps be added to the K402). My recollection of his answer is "no" Quote Link to comment Share on other sites More sharing options...
Heritage_Head Posted June 11, 2014 Share Posted June 11, 2014 Inside sharp corners=bad 100% correct. Any sharp corners inside or out are bad. just like room treatments. i.e. Corner bass traps Why would they not put the mumps in the older ones I wonder? Quote Link to comment Share on other sites More sharing options...
djk Posted June 13, 2014 Share Posted June 13, 2014 Money? Foam tape can work wonders in horns, and is removeable too. 1 Quote Link to comment Share on other sites More sharing options...
seti Posted June 13, 2014 Share Posted June 13, 2014 Grab some silly putty it is reversable. 1 Quote Link to comment Share on other sites More sharing options...
wvu80 Posted June 13, 2014 Share Posted June 13, 2014 (edited) Money? Foam tape can work wonders in horns, and is removable too. Very interesting, DJK and Mr. Seti. That "mumps" concept I had not heard before, but it makes common sense to me. Those are the kind of mods I like to try, thanks. +++ This is my CF-4 horn with 63 CD, beside a 12" wide SEOS horn. The SEOS has the inside edges rounded, and molded in. Edited June 13, 2014 by wvu80 Quote Link to comment Share on other sites More sharing options...
Max2 Posted June 13, 2014 Share Posted June 13, 2014 If your were doing an animated modeling transition from the old 510 to a totally round horn, this could be the first step. What is the consensus on a traditional shaped horn compared to a round one? Quote Link to comment Share on other sites More sharing options...
pzannucci Posted June 14, 2014 Share Posted June 14, 2014 I believe they are also there to stop some of the internal diffraction / reflections from propagating out the horn. Opposed sides and sharp corners are not good. I believe that is one of the reasons that there was a lot of discussion on 30ppi reticulated foam in "Wave Guides". Has anyone gone down this path other than maybe djk from the sounds of it? I line the bottom side of my KLF-30's horn with 1/4" open cell foam and it appears to clean things up that I attributed to either the crossover point or tweeter. It was odd but works very well. 1 Quote Link to comment Share on other sites More sharing options...
cradeldorf Posted June 15, 2014 Share Posted June 15, 2014 (edited) I believe they are also there to stop some of the internal diffraction / reflections from propagating out the horn. Opposed sides and sharp corners are not good. I believe that is one of the reasons that there was a lot of discussion on 30ppi reticulated foam in "Wave Guides". Has anyone gone down this path other than maybe djk from the sounds of it? I line the bottom side of my KLF-30's horn with 1/4" open cell foam and it appears to clean things up that I attributed to either the crossover point or tweeter. It was odd but works very well. I put the foam on the inside of the woofer spokes on my klf 30's, Mucho bettero. See my post in the RF-7 Mods thread. And just so I'm not thread jacking I think it has to do with two wavefronts meeting at the sharp corner intersection forcing each other to speed up beyond the speed of sound. And that's the annoying sound that most horns produce, except those that don't have sharp corners. Edited June 15, 2014 by cradeldorf Quote Link to comment Share on other sites More sharing options...
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