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Forum topic by Blacksheep posted 02-07-2009 07:00 PM 942 views 0 times favorited 3 replies Add to Favorites Watch
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7 posts in 3393 days

02-07-2009 07:00 PM

I have been asked by a school/care center for severely disabled and learning disabled children to design a series of stimulation and feed back chairs and recliners. This will be a reward-oriented stimulus (i.e. for every action there is a feed back of sound or vibration).

Although I have built a number of speaker cabinets utilizing laminates and plywood I already know the tonal qualities generally suck. Any chance we have any specialists out there on tonal qualities and vibration properties of various woods or anybody that might be able to direct me to such information.

Any ideas that might be applicable would also be greatly appreciated.


3 replies so far

View MsDebbieP's profile


18615 posts in 4154 days

#1 posted 02-24-2009 07:52 PM

just wondering if you found what you were looking for?

-- ~ Debbie, Canada (

View Hacksaw's profile


185 posts in 3370 days

#2 posted 02-26-2009 07:12 PM

Most acoustic guitar bodies use spruce for the front and back and decorative woods for the sides.the issue that you are going to run into is structural integrity.In order for the vibrations to not be absorbed by the mass of the wood it needs to be very thin.You may want to post at a luthiers forum like there is a wealth of information there.I don’t know where you live but I bet there is a custom instrument maker near you that would be of assistance you could check with the local music store as the training to repair instruments is the same as it is to build them.Hope this helps

-- Nothing's just gets expensive

View Chris Wright's profile

Chris Wright

540 posts in 3475 days

#3 posted 02-26-2009 07:45 PM

Well, if you’re trying to get good sound quality out of the speakers, i.e. the seats become speaker enclosures that one sits on, then it’s just a question of finding the correct volume of the enclosure. As for woods to use, I’ve always used MDF for an enclosure because it’s very dense and won’t deaden the sounds. You can make the enclosure out of MDF and fit it into a space inside the chairs. I hope this helps.

-- "At its best, life is completely unpredictable." - Christopher Walken

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