DizRotus Posted November 13, 2005 Share Posted November 13, 2005 What are the collective recommendations for sealing the bottoms of Las Scalas around the doghouse? Im in the process of resurrecting two of Four abused Lascalas need a good home - sold . The sticky strip that was around the perimeter of the bottoms (visible as the dark line between the network and the T-35 in the attached photo) has been removed. My questions are:<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /> What did Klipsch use originally; Should I again follow the perimeter of the rectangular bottom; And/or, should I seal closer to the opening of the doghouse; and Should I put screws through the bottom and into the walls of the doghouse (Id also use screws around the rectangular perimeter of the bottom? FYI these will not be moved around and it is unlikely that anyone will need to gain access to the woofers in the near future. Nevertheless, I want to seal the back chambers adequately while not making it difficult to gain access to the woofers in the future. Quote Link to comment Share on other sites More sharing options...
colterphoto1 Posted November 13, 2005 Share Posted November 13, 2005 Are you building new panels? I would assume the doghouse to be untweaked, IE straight, so sealing not a huge issue. Maybe just a thin foam or cork would seal it up okay. I'd still leave it so you could get inside. M Quote Link to comment Share on other sites More sharing options...
John Pearlman Posted November 13, 2005 Share Posted November 13, 2005 Hi You responded to my post "La Scala Resto" so it's time to return the favor. For my bases, I'm going to rout a 1/4" deep and 15" square recess centered around the hole for the woofer. This will be the "female" and I'm going to attatch a piece of 1/4" thick MDF the bottom of the bases for the "male". Thus, the base will be located on the bottom on the speaker and I'll just have to put a little 1/4" foam weatherstripping around the edge of the woofer cutout. This should seal em' pretty good without much mess. John Quote Link to comment Share on other sites More sharing options...
Daddy Dee Posted November 13, 2005 Share Posted November 13, 2005 DR, Klipsch used a strip of some black sticky material about 1/4 inch wide to seal the bottom hatch. As I remember, it is laid out about splitting the difference between the edge of the bottom hatch and the doghouse perimeter. HDBRBuilder recommended an alternative that sounded very good to me. He suggest to lay down a healthy bead of silicone caulk on the bottom plate. Let that dry and cure a day or two, then it's ready to attach with a satisfactory seal. Quote Link to comment Share on other sites More sharing options...
Q-Man Posted November 13, 2005 Share Posted November 13, 2005 Do it that way if you like, but it's overkill and a waste of time. Just dip a rag into lacquer thinner and rub off the sticky residue left behind by the old weather stripping. Replace it with foam tape weatherstrip 3/8" or 1/2" wide x 3/16" thick. Screw the bottom back on using the same holes, unless some are stripped. You can spend some of the time that you saved and look at all the joints inside the doug house. If any of them look like they might not be air tight fill them with silicone caulk. Quote Link to comment Share on other sites More sharing options...
BEC Posted November 13, 2005 Share Posted November 13, 2005 Seems that recessing the cover would reduce the back chamber volume a bit. Not sure it would be enough to make a difference, but something to think about. Bob Quote Link to comment Share on other sites More sharing options...
tofu Posted November 13, 2005 Share Posted November 13, 2005 i just removed whatever was remaining of the old crap and replaced it with whatever weather stripping i had laying around, which happened to be 3/4" brown Quote Link to comment Share on other sites More sharing options...
DizRotus Posted November 13, 2005 Author Share Posted November 13, 2005 i just removed whatever was remaining of the old crap and replaced it with whatever weather stripping i had laying around, which happened to be 3/4" brown That's the kind of reinforcement I was looking for. Not only do I agree with Bob's comment about reducing the volume of the back chamber, there is no way in He77 I'm going to put that much effort into these relics. Quote Link to comment Share on other sites More sharing options...
John Pearlman Posted November 13, 2005 Share Posted November 13, 2005 The way I routed it the MDF only protruded into the chamber about 1/16", which reduces the volume about 9 cubic inches IF the opening is 1 square foot which I don't think it is. I doubt you could notice this difference and even so the air leak between the woofer and board would probably negate it. But yeah, it is a lot of work and weatherstripping would be fine I believe. If you wanted, you could get 1/2" weatherstripping and rout a little 3/16" track for it to sit in......I'm getting carried away again. Quote Link to comment Share on other sites More sharing options...
tofu Posted November 13, 2005 Share Posted November 13, 2005 or you could rebuild the speaker out of solid steel, then once the woofer is in place, weld the access panel shut. Quote Link to comment Share on other sites More sharing options...
Duke Spinner Posted November 13, 2005 Share Posted November 13, 2005 wouldn't that sound .........Tinny ........[] Quote Link to comment Share on other sites More sharing options...
tofu Posted November 13, 2005 Share Posted November 13, 2005 no, it'd sound "industrial." get your audiophile terms straight. Quote Link to comment Share on other sites More sharing options...
DizRotus Posted November 13, 2005 Author Share Posted November 13, 2005 The way I routed it the MDF only protruded into the chamber about 1/16", which reduces the volume about 9 cubic inches IF the opening is 1 square foot which I don't think it is. I doubt you could notice this difference and even so the air leak between the woofer and board would probably negate it. But yeah, it is a lot of work and weatherstripping would be fine I believe. If you wanted, you could get 1/2" weatherstripping and rout a little 3/16" track for it to sit in......I'm getting carried away again. Don't misunderstand,. I admire your attention to detail. If these were for personal use, I'd consider a more elegant solution than weather stripping. But they're NOT! This is a pro bono project for the high school band. I've already invested way too much time. Weather stripping will be fine. Quote Link to comment Share on other sites More sharing options...
djn Posted November 13, 2005 Share Posted November 13, 2005 Hi Neil, I used 1/2 " foam weather strip on my Khorns when I assembled them. It seems to be all you need. Let me know if you need anything. Are the xovers and drivers OK? Cheers. Quote Link to comment Share on other sites More sharing options...
colterphoto1 Posted November 13, 2005 Share Posted November 13, 2005 The way I routed it the MDF only protruded into the chamber about 1/16", which reduces the volume about 9 cubic inches IF the opening is 1 square foot which I don't think it is. I doubt you could notice this difference and even so the air leak between the woofer and board would probably negate it. But yeah, it is a lot of work and weatherstripping would be fine I believe. If you wanted, you could get 1/2" weatherstripping and rout a little 3/16" track for it to sit in......I'm getting carried away again. Don't misunderstand,. I admire your attention to detail. If these were for personal use, I'd consider a more elegant solution than weather stripping. But they're NOT! This is a pro bono project for the high school band. I've already invested way too much time. Weather stripping will be fine. Sorry about all that. Is there anything I can do to make it right with you? Michael Quote Link to comment Share on other sites More sharing options...
DizRotus Posted November 13, 2005 Author Share Posted November 13, 2005 Michael, All is well. I always expected to invest way too much time. You know, "No good deed goes unpunished." The speakers were as expected. As the finished photos will show tomorrow, I went beyond what was necessary to make them functional and presentable. That was by choice. But routing out boards to seal the bottoms of the doghouses would be way too anal for the purposes of this project. If you haven't done so, check out the "four abused . . " thread again in General. The smiles on their little hormone ravaged faces will be reward enough. Quote Link to comment Share on other sites More sharing options...
colterphoto1 Posted November 13, 2005 Share Posted November 13, 2005 Thanks Neil, I was getting concerned when I saw and heard of the horrific K33. Did your K77's come out okay? DrWho and I went to replace diaphrams in several K77's around here and I'd misplaced my stock of parts, sure hope those little buggers turn up.... Quote Link to comment Share on other sites More sharing options...
DizRotus Posted November 13, 2005 Author Share Posted November 13, 2005 In order to meet the original Monday deadline, I was substituting the existing T-35s and going to repair the K77s later. Now that the delivery date has been pushed back to Wednesday, I'll consider replacing the diaphragms in the K77s. Quote Link to comment Share on other sites More sharing options...
DizRotus Posted November 14, 2005 Author Share Posted November 14, 2005 They're done. I used weatherstripping. Worked like a charm. Photos tomorrow (of the end result, not the weatherstripping). Quote Link to comment Share on other sites More sharing options...
mowntnbkr Posted November 15, 2005 Share Posted November 15, 2005 I am surprised TBrennan hasn't chimed in and told you to take a match to them like he did mine.[] Quote Link to comment Share on other sites More sharing options...
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