As for damping material, my experience with speakers like that would rate them this way for sound quality and effectiveness.
- Pure wool felt (soft)
- Bonded Logic denim insulation
- Rockwool panels
- Fiberglass panels
- Fiberglass loose.
Works for me 😉, though with the first three, I 'see' an over damped cab once one of each parallel walls are covered enough to quell any 'hollowness'; whereas with acoustic FG, it's more likely still a bit under damped that can be tuned out by 'critically' damping the vent using the 'click' or impulse test, which historically results in a bit more 'lively' response with wide BW drivers, hence a better match to OB, IB, horn systems since there's less acoustic mass loading [damping] of the driver: Click Test | GM210 | Flickr
GM
Whole room
Nice bike! Vintage 250 TR with an aftermarket hard tail frame, bar, seat, etc.?
GM
Ah! Sweet! 😀 Couldn't see enough at the angle blown up [lack of] clarity, just knew that in my time/locale folks tended to use the 250 for 'flat tracking' city traffic whereas us 'Bonnie' owners preferred Cafe style racers ['66 in my case]. Gees, do I miss 'sickle' riding/racing. 🙁
GM
GM
Yeah, one can overdo the damping. The nice thing about the felt and the denim is their nice even broadband absolution. A felt curtain behind the driver has worked well in big cabs to reduce mids coming back out of the box.
All those material will work well, of course. It's just a matter of audiophile level tweaking. 🙂
Great bike! Love the look. Sure does dress up a listening room.
All those material will work well, of course. It's just a matter of audiophile level tweaking. 🙂
Great bike! Love the look. Sure does dress up a listening room.
Yeah, I've used 'hanging blankets' suspended diagonally across large sealed/IB cabs and more recently some folks have used it in some pipe horn terminus including the popular 'BIB' series, but didn't like it in the various MLTLs I built early on with mostly < 8" 'FR' drivers, consequently didn't try it on my large ones.
GM
GM
Unfortunately the TF1225CX is no longer available :-(Some might be interested in this, the German DIY hifi magazine Klang + Ton built in 2014 an Altec 6xx alike speaker. They used a 12" Celestion TF1225CX coax driver and kept the enclosure extremely close to the Altec cabinet. With just over 300€ per side rather affordable and it sounds excellent.
Celeste K+T
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