freddyi Posted August 2, 2006 Share Posted August 2, 2006 will a hacksaw slice suffice so cut welds will open enough w/o touching/scraping? - all got and it needs a blade. does the fin cuts usually take out the major ring modes? what's your fave damping that gives a musical sounding result without over deadening or odd timbre? Quote Link to comment Share on other sites More sharing options...
Duke Spinner Posted August 2, 2006 Share Posted August 2, 2006 ow others may not agree ... but here's MY opinion........... bolt the horn back into something, and use it like Altec intended. with the fiberglass in the cheeks. i personally don't subscribe to the fin-cutting thing.... What ...?? ya think them Altec engineers didn't know better ,,, ??? Quote Link to comment Share on other sites More sharing options...
sfogg Posted August 2, 2006 Share Posted August 2, 2006 Duke, "ya think them Altec engineers didn't know better ,,, ???" They did... they started cutting the welds from the factory on later 511Bs as well as leaving out the stiffener down in the throat. I have a factory 511 like this. Even bolted to a baffle with all 6 bolts the lips on the 511B can be set to ring very easily from across the room. Plumbers Putty on one of the lips damps that down very very well though and is easy to do. I did some recording comparing before/after of this awhile back. It is readily obvious. Shawn Quote Link to comment Share on other sites More sharing options...
Duke Spinner Posted August 2, 2006 Share Posted August 2, 2006 ok.... I was thinking 811 ... never seen one not welded from the factory tho ... the 811 doesn't bother me stock ...[] Quote Link to comment Share on other sites More sharing options...
Guest " " Posted August 2, 2006 Share Posted August 2, 2006 sfogg a picture of the factory version would be great Quote Link to comment Share on other sites More sharing options...
Guest " " Posted August 2, 2006 Share Posted August 2, 2006 ""bolt the horn back into something, and use it like Altec intended."" on both ends Quote Link to comment Share on other sites More sharing options...
tigerwoodKhorns Posted August 2, 2006 Share Posted August 2, 2006 If you do decide to cut them, you will want to get a blade made for aluminum. If not, you had better have a wire brush or wire wheel on a grinder and lots of patience to keep cleaning the blade. Aluminum cloggs blades very easily. Quote Link to comment Share on other sites More sharing options...
Jim E Posted August 3, 2006 Share Posted August 3, 2006 I'm in agreement with Duke. I wouldn't cut the fins. They don't make these anymore and there are many other ways to dampen the so called "ringing" without destroying the horn. Try some modeling clay and/or Dynomat before you make any cuts. Quote Link to comment Share on other sites More sharing options...
Wrench722 Posted August 3, 2006 Share Posted August 3, 2006 I used QUIET-KOTE SPRAY. It seem to work fine. Quote Link to comment Share on other sites More sharing options...
freddyi Posted August 3, 2006 Author Share Posted August 3, 2006 Hi Wrench722 is Quiet Kote more effective than generic (and cheaper) spray-can car undercoatings? Quote Link to comment Share on other sites More sharing options...
sfogg Posted August 3, 2006 Share Posted August 3, 2006 I will try and take some pictures of the factory modded 511B tonight. I found the thread that had the recordings of the 511B with and without the blob of Plumbers Putty on one of the lips. http://forums.klipsch.com/forums/permalink/693457/694068/ShowThread.aspx#694068 Shawn Quote Link to comment Share on other sites More sharing options...
Guest " " Posted August 3, 2006 Share Posted August 3, 2006 sfogg I'll check out that thread Quote Link to comment Share on other sites More sharing options...
IB Slammin Posted August 5, 2006 Share Posted August 5, 2006 I used QUIET-KOTE SPRAY. It seem to work fine. Wrench, What does that stuff look like? How thick? Could you post a pix? Thanks, Terry Quote Link to comment Share on other sites More sharing options...
Duke Spinner Posted August 5, 2006 Share Posted August 5, 2006 brush on ...Bedliner Quote Link to comment Share on other sites More sharing options...
Wrench722 Posted August 6, 2006 Share Posted August 6, 2006 It is a lot like spray in bed liner and you can make it as thick as you like. I made mine about a 1/4" thick. I looks just like the bed liner stuff but it is softer. Quote Link to comment Share on other sites More sharing options...
hwatkins Posted August 7, 2006 Share Posted August 7, 2006 I'm in agreement with Duke. I wouldn't cut the fins. They don't make these anymore and there are many other ways to dampen the so called "ringing" without destroying the horn. Try some modeling clay and/or Dynomat before you make any cuts. I agree with the above - it is a bit like classic cars. Do you keep them original (my preference) or do you hot rod them? I think you will find solutions with the good qualities of the 511 without the ringing issue, however - if the chore to refurbish to original is no greater than the fin cutting then I might well cut the fins.... Quote Link to comment Share on other sites More sharing options...
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