Rerurn to Romy the Cat's Site
In the Forum: Horn-Loaded Speakers
In the Thread: Midbass Horns and Real Estate.
Post Subject: Bang for the Buck ApproachesPosted by Paul S on: 1/28/2010
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Good call, Wojtek.
Depending on access, the cement boards could probably be 5/8" drywall, for savings on material and easier installation. Moisure resistant drywall can be used over a dirt crawl space. The cement board is a PITA to cut around ducts, posts, etc., and it is also more difficult than drywall to screw onto the floor joists, and it is much harder to "tape". If the floor will support the extra weight, or if the floor is going to be shored up, and the budget allows it, drywall can be doubled, staggering the joints (and using long screws for the second layer!).
If the underfloor space is not already fully insulated, then do this first. There is even acoustical insulation available that does work better for sound than normal fiberglass thermal insulation, albeit at a steep increase in cost, and it is hard to find outside of large population centers. When blocking for the drywall, frame access under the hi-fi equipment, for wiring, etc. For that matter, be sure to frame for future access to plumbing clean-outs, traps, risers, etc., as well.
Insulation and drywall are very nice, but they are not a substitute for shoring up the floor. In many cases, this can be a night and day difference.
Best regards,
Paul SRerurn to Romy the Cat's Site