Dave MacKay Posted January 2, 2023 Share Posted January 2, 2023 I’m refurbishing a pair of 1983 Heresy speakers that I bought a few weeks ago. I was surprised to find no evidence of any acoustic gasket between the removable rear panel and the speaker carcass. On my La Scalas, an acoustic gasket (foam tape) is used to seal the woofer access panel. Did the Heresy 1 have acoustic gasket on the rear panel? Or was it not necessary? Quote Link to comment Share on other sites More sharing options...
DizRotus Posted January 2, 2023 Share Posted January 2, 2023 No, but I always do. Years ago I asked someone at Klipsch whether a Heresy is a “sealed” speaker. He replied, “It’s sealed enough.” 1 Quote Link to comment Share on other sites More sharing options...
geezin' Posted January 2, 2023 Share Posted January 2, 2023 Was wondering that about mine. Might get around to sealing it,might not. I do know that my normal listening level has crept up a bit. Quote Link to comment Share on other sites More sharing options...
Dave MacKay Posted January 2, 2023 Author Share Posted January 2, 2023 2 hours ago, geezin' said: Might get around to sealing it,might not. If you decide to do it, you’ll want to use a thin gasket. I was able to use 3/16” thick foam tape but it required a lot of force to get the rear panel to sit flush. I plan to get some 1/8” thick tape and re-do it. Quote Link to comment Share on other sites More sharing options...
geezin' Posted January 2, 2023 Share Posted January 2, 2023 Were you able to hear a significant difference? And thanks for the tip. Quote Link to comment Share on other sites More sharing options...
DizRotus Posted January 2, 2023 Share Posted January 2, 2023 I too use very thin closed cell foam tape. I’m not able to discern any difference. Apparently, as Klipsch said, it’s sealed enough without a gasket. As PWK frequently said, “Doesn’t make a dime’s bit of difference.” Nonetheless, it makes me feel better and it couldn’t hurt. 3 Quote Link to comment Share on other sites More sharing options...
Dave MacKay Posted January 2, 2023 Author Share Posted January 2, 2023 2 hours ago, geezin' said: Were you able to hear a significant difference? And thanks for the tip. Too soon to tell, but my initial impression is that I couldn’t hear any difference. I didn’t think to take measurements with REW before and after to see if there was a measureable change. Quote Link to comment Share on other sites More sharing options...
Deang Posted January 2, 2023 Share Posted January 2, 2023 Sealed and acoustic suspension aren’t the same. The Heresy doesn’t require an airtight seal. 3 Quote Link to comment Share on other sites More sharing options...
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