Edgy Posted February 7, 2009 Share Posted February 7, 2009 If you need to catch up, look down the page a bit for my "Where's the dampening" thread. So... I ordered some of the PE 3/4" sonic barrier (and some terminal cups and foam tape for the back, didn't have time for those today before work) and did the inside of my '84 Heresies. This stuff is great! Perfect depth for a Heresy, and the 18x24 sheet worked out really well. I ordered four sheets, but only used three. Did the back, one side, and the top and bottom of each speaker, plus a little bit on the crossover side of one wall. The adhesive backing made it really easy to apply, just had to position it right the first time. I even worked out a way to get the back real easy. I just cut it to size, peeled the backing and gently set it up in the opening with the sticky side out, and put the back in place. Because of the depth of the mid driver, it would stay in place and stick enough to take it out again and then press it down well. So here's some pix. Oh, the sound!? Well, it's subtle, to be sure, but the bass is better. Not so boomy. Much tighter and cleaner. I know, I know, the Heresy isn't known for lots of bass, but there are lots of subwoofers with 12" drivers in smaller boxes than this. Quote Link to comment Share on other sites More sharing options...
Edgy Posted February 7, 2009 Author Share Posted February 7, 2009 Quote Link to comment Share on other sites More sharing options...
Edgy Posted February 7, 2009 Author Share Posted February 7, 2009 Quote Link to comment Share on other sites More sharing options...
Edgy Posted February 7, 2009 Author Share Posted February 7, 2009 Quote Link to comment Share on other sites More sharing options...
Daddy Dee Posted February 7, 2009 Share Posted February 7, 2009 Edgy, Neat work. What's your take on the sound? Quote Link to comment Share on other sites More sharing options...
Edgy Posted February 7, 2009 Author Share Posted February 7, 2009 Edgy, Neat work. What's your take on the sound? Ya know, it's interesting. I noticed pretty much the same improvement that I did with the other speakers I added dampening to (one inch of fiberglass in this case) that I referenced in the other thread. At first listen, it seems you lose some bass, but with more careful listening, it becomes obvious that the bass is still there, it is just cleaner and not as noisy. I think it is because you are taming a lot of the internal reflections, that otherwise bounce back and hit the woofer from behind, causing a lot of out of phase noise. Quote Link to comment Share on other sites More sharing options...
colterphoto1 Posted February 8, 2009 Share Posted February 8, 2009 putting that seal on there has a huge effect also. Check out some of GLA51's hints on totally sealing a Heresy cabinet. He does all the glue block corners and the gaps in the woofer gasket for a totally airtight fit and reportedly smoother bass. M Quote Link to comment Share on other sites More sharing options...
HDBRbuilder Posted February 10, 2009 Share Posted February 10, 2009 It's a pet peeve of mine, but PLEASE refrain from using the term "dampen, dampening, dampened" UNLESS you are talking about making something WET!! The correcct term is damp, damped, damps, damping,etc., which means, in the context of speakers, deadening of sound. Thanks, and I am sure PWK would thank you also! Quote Link to comment Share on other sites More sharing options...
djk Posted February 10, 2009 Share Posted February 10, 2009 Main Entry: damp·en Pronunciation: \'dam-p?n\ Function: verb Inflected Form(s): damp·ened; damp·en·ing \'damp-ni?, 'dam-p?-\ Date: 1547 transitive verb 1 : to check or diminish the activity or vigor of : deaden <the heat dampened our spirits> Quote Link to comment Share on other sites More sharing options...
Edgy Posted February 11, 2009 Author Share Posted February 11, 2009 Main Entry: damp·en Pronunciation: \'dam-p?n\ Function: verb Inflected Form(s): damp·ened; damp·en·ing \'damp-ni?, 'dam-p?-\ Date: 1547 transitive verb 1 : to check or diminish the activity or vigor of : deaden <the heat dampened our spirits> Hey HDBR, ride your "1983 60th Anniversary Edition BMW R100RT" all the way back to your mama's house. [:$] Quote Link to comment Share on other sites More sharing options...
Islander Posted February 11, 2009 Share Posted February 11, 2009 Main Entry: damp·en Pronunciation: \'dam-p?n\ Function: verb Inflected Form(s): damp·ened; damp·en·ing \'damp-ni?, 'dam-p?-\ Date: 1547 transitive verb 1 : to check or diminish the activity or vigor of : deaden <the heat dampened our spirits> Maybe it's different in audio. Amplifiers have a "damping factor", not a "dampening factor". BTW, Edgy, HDBRbuilder worked at Klipsch for years and knows more about speakers than many people on this forum. Quote Link to comment Share on other sites More sharing options...
SilverSport Posted February 11, 2009 Share Posted February 11, 2009 ...and built a LOT of Heresys (like my 1978s)...thanks again HDBRbuilder... Bill Quote Link to comment Share on other sites More sharing options...
HDBRbuilder Posted February 11, 2009 Share Posted February 11, 2009 djk wrote the following post at 02-11-2009 4:38 AM: Main Entry: damp·en Pronunciation: \'dam-p?n\ Function: verb Inflected Form(s): damp·ened; damp·en·ing \'damp-ni?, 'dam-p?-\ Date: 1547 transitive verb 1 : to check or diminish the activity or vigor of : deaden <the heat dampened our spirits> Right back at ya DJK: tr.v. damped, damp·ing, damps 1. To make damp or moist; moisten. 2. To extinguish (a fire, for example) by cutting off air. 3. To restrain or check; discourage. 4. Music To slow or stop the vibrations of (the strings of a keyboard instrument) with a damper. 5. Physics To decrease the amplitude of (an oscillating system). No response to the newbie's uncalled-for remark, though![] Quote Link to comment Share on other sites More sharing options...
Edgy Posted February 12, 2009 Author Share Posted February 12, 2009 tr.v. damped, damp·ing, damps 1. To make damp or moist; moisten. 2. To extinguish (a fire, for example) by cutting off air. 3. To restrain or check; discourage. 4. Music To slow or stop the vibrations of (the strings of a keyboard instrument) with a damper. 5. Physics To decrease the amplitude of (an oscillating system). No response to the newbie's uncalled-for remark, though! I may be new to this forum, but I'm not new to the internet, and I'm not some young punk. And I'm definitely familiar with grammar Nazis. If you aspire to that, at least get it right. Your entry doesn't help your point. You tried to tell me that "dampening" referred to moisture, and yet the very FIRST entry for "damped" is "to make damp or moist". Give up while you're behind. Quote Link to comment Share on other sites More sharing options...
gaspr Posted February 12, 2009 Share Posted February 12, 2009 I will side with PWK, Floyd Toole and HDBRbuilder on this one when it comes to music and physics... Quote Link to comment Share on other sites More sharing options...
Edgy Posted February 12, 2009 Author Share Posted February 12, 2009 BTW, Edgy, HDBRbuilder worked at Klipsch for years and knows more about speakers than many people on this forum. And yet he would rather play grammar Nazi than any useful input into the topic. Quote Link to comment Share on other sites More sharing options...
Islander Posted February 12, 2009 Share Posted February 12, 2009 Grammar Nazi? This is a technically oriented forum, so when a knowledgeable person corrects the use of a technical term, most people don't get offended. HDBRbuilder's input was polite and deserved a similar response, if any. Quote Link to comment Share on other sites More sharing options...
Edgy Posted February 12, 2009 Author Share Posted February 12, 2009 ...This is a technically oriented forum, so when a knowledgeable person corrects the use of a technical term, most people don't get offended. HDBRbuilder's input was polite and deserved a similar response, if any. You're kidding, right? Calling me "newbie" is polite? Since when? I didn't get offended. I've been on enough forums for long enough to have some pretty thick skin. I just thought it was funny that someone else decided to correct his "teaching", and I made fun of his mistake. That was all. I don't care if he built Lamborghinis in 1972, working on an assembly line doesn't make you an expert, especially in English. The problem is, the two terms are basically interchangeable, yet he choose to correct me. And then, and oh my God it just keeps getting better, his retort just shores up the opposition. Which begs the question, why are you defending him? I guess the old guard is circling the wagons. Whatever. You still haven't addressed my statement that your "expert" didn't add anything worthwhile to the discussion. He might even have some insight into the changes from Heresy ones to twos. Someone has mentioned that damp(en)ing was added later. Quote Link to comment Share on other sites More sharing options...
Marvel Posted February 12, 2009 Share Posted February 12, 2009 He might even have some insight into the changes from Heresy ones to twos. Someone has mentioned that damp(en)ing was added later. My HIIs only have a piece of foam that is placed in a 'U' shape behind the woofer. Didn't see any mold inside... I guess mine have never been damped, dampened.... or who knows what. []Cheers, Bruce Quote Link to comment Share on other sites More sharing options...
Edgy Posted February 13, 2009 Author Share Posted February 13, 2009 Didn't see any mold inside... I guess mine have never been damped, dampened.... or who knows what. 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.