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In Reply to: RE: Your best tweaks for fullrange posted by moray james on May 08, 2015 at 07:39:02
the best available constrained layer damping material . . .
Such as?
TIA
Follow Ups:
dynamat or hushmat there are many such products and availability will usually determine what people will use. F-11 Acoustical felt is the very best possible felt (real wool) it has the widest bandwidth of absorption available. I like to use three layers of 1/8" F-ll looses around the cone so that it damps both cone and spider energy. this makes for a huge improvement in bass SQ. Hope that helps. Best regards Moray James.
moray james
there are many such products and availability will usually determine what people will use
Thanks for that. As it goes, I put plenty of a local Dynamat equivalent on my drive units several years ago but I'd not thought of using felt.
D
I bond about a 1/4" layer of F-11 on the inside of the baskets on top of the CL material. The felt used around the cone needs to be free of the cone and the spider so I cut doughnuts each is a different size ID to track the cone expansion. By the way synthetic felt like acrylic craft felt and some of the packing felt is a wast of your time synthetics do not work or sound (absorb) anywhere near natural wool felt.
moray james
moray james:
I bond about a 1/4" layer of F-11 on the inside of the baskets on top of the CL material, etc, etc.
I reported earlier that I'd fitted CL damping to my drive units. Well, so I had but, as it turns out, to speakers I sold some ten years ago. As the frame on my "newer" drivers is made of diecast aluminium and as the arms are short, I'd not bothered this time round.
So, this afternoon and in light of your tip, I fitted as many strips of Dynamat equivalent as I comfortably squeeze onto to the frame and put 1/8" (3 mm) wool felt on top where appropriate.
Yes, it's made a very worthwhile improvement - smoother sound, more of that "in the room" feel. I don't think I'm finished yet but it's been a good start. Many thanks to all for the ideas.
Dave
I bond about a 1/4" layer of F-11 on the inside of the baskets on top of the CL material. The felt needs to be free of the cone and the spider so I cut doughnuts each is a different size ID to track the cone expansion. By the way synthetic felt like acrylic craft felt and some of the packing felt is a wast of your time synthetics do not work or sound (absorb) anywhere near natural wool felt.
moray james
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