bluesboy Posted February 23, 2005 Share Posted February 23, 2005 What is the best way to dampen Altec 511B Horns? Quote Link to comment Share on other sites More sharing options...
3dzapper Posted February 23, 2005 Share Posted February 23, 2005 Toss 'em in the lake! Dynamat or this asphalt based sheeting., which is less costly, will work very well. I have used a lot of the dampening from Parts Express on horns, speaker boxes, CD players and amps. Rick Quote Link to comment Share on other sites More sharing options...
sfogg Posted February 23, 2005 Share Posted February 23, 2005 If you want to do the factory mod to a 511 you cut the vertical vanes at the weld marks then fill it in with a rubberized compound. I have one 511B that had this done at the factory and this one little mod alone makes a large difference in how little it rings compared to the earier 511s. When they are mounted in a baffle I found that applying plumbers putty to the throat of the horn did very little to stop them from ringing. What seemed to work very well was putting the putty on the outside of either the top or bottom lip on the mouth of the horn near the edge of the lip. Even just a couple of blobs of the stuff above the vanes really quieted it down. It also seemed to work better doing only one lip, not both. Shawn Quote Link to comment Share on other sites More sharing options...
bluesboy Posted February 23, 2005 Author Share Posted February 23, 2005 Hey Rick, thanks a lot. Don Quote Link to comment Share on other sites More sharing options...
cjgeraci Posted February 23, 2005 Share Posted February 23, 2005 ---------------- On 2/23/2005 7:36:36 PM 3dzapper wrote: Toss 'em in the lake! Dynamat or this asphalt based sheeting. , which is less costly, will work very well. I have used a lot of the dampening from Parts Express on horns, speaker boxes, CD players and amps. Rick ---------------- I second that, Rick. Rope caulking is real popular in here, but after I saw Al using the Dynamat-type stuff, I used it on my Belles and Cornwall. Worked well and relatively quick/easy to do. Carl. Quote Link to comment Share on other sites More sharing options...
TBrennan Posted February 23, 2005 Share Posted February 23, 2005 Shawn is on the money. Cut the welds in the vanes with a sawzall and fill the kerfs with silicone or rubber. Don't remove the vanes totally as some folks do, that's a completer waste of time, I know, I tried it. Bolt the horn to a baffle and line the "lips" with putty or non-hardening modeling clay. The horn pictured shows how I damped the lips. The horn was also screwed to the basshorn on the bottom and that helped alot. The damping seen farther back on the horn body was little or no help. Quote Link to comment Share on other sites More sharing options...
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