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nt
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.....compliment the floor.i do think it is ideal to start with a concrete floor. then when you are choosing isolation devices they will have a predicable bass to work with.
if the floor flexes then that will need to be factored into the other gear interfaces and the results will be less predictable.
one issue with a concrete floor is that the bass will reflect more strongly off it than a flexible wood floor. this is manageable thru various means but it does need to be dealt with.
it is illustrative that the ideal setup for an electron microscope is for ground floor with a concrete slab. otherwise the flex in the floor will compromise the performance. isolation devices have the best performance when they work with the most predictable bass......a concrete floor. a wooden floor will always compromise isolation.
music reproduction gear has the same challenges as the electron microscope.
mikel
it really depends on your room. you really only need to float if your isolating from other surroundings if you can get away with blasting your speakers all day without no interruptions. You don't need to float your floors. If neighbors are a problem then you need to check around for the best solution for floating your floors there are many options.http://www.soundproofing.org/
this is a good place to start
It's really hard to get a floating floor to not resonate or bounce in some way. And as people have commented, it's especially bad for Vinyl setups.
My knowledge of a floating floor is hard wood laminate over a concrete base, "floating" on an undelayment. This creates resonances and echoes and modes and nodes and artifacts and distortion that can not be defeated. Ever. It's horrible. I still have nightmares.......move to a new house. Or cover it with 36" of poofy rugs and pillows and carpets and cats and foam and.....nah, just move.It's just my experience, YMMV.
(nt)
I don't know what a "floating floor" actually is, but if you're playing vinyl, a floor that is has any mobility beneath you is not a good idea.....Turn the volume up, a structural resonance gets excited, and bammo, cartridge needs a new stylus.....
This almost happened to me on a solid concrete floor. With a cartridge costing several grand.....
Mine is a floating floor because I needed to run conduit under the floor for cables.
It's build on a concrete slab using Kinetics Noise Control KIP system. On top of that is 2 layers of 5/8" hardwood plywood layed at 90 degrees from one another with Green Glue inbetween. On top of that is 1/4" rigid fiberglass and then 3/4" Maple laminate. Just follow the link to my construction.Regards,
Bruce
If were talking already being on a suspended floor, the only purpose I could imagine would be for isolation. I do know of a fellow in Vancouver who had his entire audio room isolated from the building he lived in, cost him a fair penny. This was only because he lived in an apartment building and didn't want any outside interferance for his system (very large condo, nice big room maybe 20 x 25 and a separate HT outside of the room).
I'm assuming you're actually referring to a basement room on concrete. Some HT builders recommend placing a subfloor over this for enhanced bass reproduction. Completely accurate to life reproduction is not always necessarily the key in HT design however. Some feel that concrete floor is the best way to go for an audio room. Mine is carpet over slab.
nt
From what I remember their design seemed to be focused on isolating the theater room from the rest of the house, not necessarily for creating the best sound possible.I'm in the concrete slab camp myself-
Winson Ma had an article posted somewhere about his constructing his audio room which is reportedly quite spectactular. I think he started by digging a 20 foot deep hole and filling it with various layers of sand, rock, gravel, and magic dust. It, along with MikeL's build article in positive feedback are required reading for room construction. I also recomend F. Alton Everest's "masters handbook of acoustics"
Nate
Expansive soil is real problem in parts of Colorado so my home, and basement which is my listening room, is "floating".My basement is finished and makes for a nice listening room. The floor is wood covered with carpet.... with crawl space under the floor.
NT
(nt)
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