Blvdre Posted July 9, 2007 Share Posted July 9, 2007 I'm in the process of updating my La Scalas (rewiring, damping the horns, replacing the X-overs with ALK Universals), and noticed that the K33 was mounted using only 4 of the 8 mounting holes. This had led to what I like to refer to as the "potato chip" effect, i.e. waves in the basket edge. Everything looks stock and original, so am I correct in assuming that this was a production decision on the part of Klipsch? I know....picky, picky... Quote Link to comment Share on other sites More sharing options...
Daddy Dee Posted July 9, 2007 Share Posted July 9, 2007 Yes, it is stock for Klipsch. The woofer is mounted with the four screws in the T-Nuts. Quote Link to comment Share on other sites More sharing options...
DizRotus Posted July 9, 2007 Share Posted July 9, 2007 DD's correct. That's stock. PWK would say, "Not a dime's worth of difference" by putting four more bolts in. Nevertheless, I suggest that you add four more and torque them down evenly. There's no room for a T-nut near the peak of dog house but wood screws will do there. When I opened some LS that had seen bar duty, all four machine screws were loose; put in four more. Quote Link to comment Share on other sites More sharing options...
Blvdre Posted July 9, 2007 Author Share Posted July 9, 2007 DD's correct. That's stock. PWK would say, "Not a dime's worth of difference" by putting four more bolts in. Nevertheless, I suggest that you add four more and torque them down evenly. There's no room for a T-nut near the peak of dog house but wood screws will do there. When I opened some LS that had seen bar duty, all four machine screws were loose; put in four more Good suggestion, I will most definitely do that. Slightly off topic, I removed the K-55-V from the horn (prep/clean-up for applying damping), put my mouth up to the horn, and sang a few notes. I was surprised at how much that horn rang. I imagine when it's mounted, the plywood might provide minimal damping, but I see now that this is a very necessary tweak. Has anyone figured out what the approximate resonance of the k400 is? Quote Link to comment Share on other sites More sharing options...
JohnA Posted July 10, 2007 Share Posted July 10, 2007 Around 600 Hz. Use Dynamat. Quote Link to comment Share on other sites More sharing options...
gaspr Posted July 10, 2007 Share Posted July 10, 2007 If you are concerned that the bolts may loosen over time, I would suggest using a drop of Loctite non permanent threadlocker when reassembling. Cheap insurance. Quote Link to comment Share on other sites More sharing options...
DizRotus Posted July 10, 2007 Share Posted July 10, 2007 I concur regarding the Loctite on the T-nuts; it's no use on the wood screws. Quote Link to comment Share on other sites More sharing options...
Blvdre Posted July 10, 2007 Author Share Posted July 10, 2007 Yes, I have some 242 that'll do the trick. I think I'll throw some lockwashers on the wood screws as insurance. Instead of dynamat, I went with the parts express version. I looked through some of the old posts, and the old style dynamat seemd to be preferred. Since it's not available, a few suggested the parts express version, as it's similar (seems like an asphalt based compound)....also it's a bit cheaper than dynamat, and who doesn't like cheaper? Quote Link to comment Share on other sites More sharing options...
Daddy Dee Posted July 11, 2007 Share Posted July 11, 2007 Yeh, it will damp the horn just fine. Cheaper is nice, too. Quote Link to comment Share on other sites More sharing options...
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