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Scrap wood

67.243.15.148

Posted on July 21, 2016 at 05:00:32
hifipaul
Audiophile

Posts: 735
Location: NY
Joined: December 22, 2008




I have a pair of Altec 755Cs and have been using them in a 32" X 36" open baffle, a well known and highly touted design using Baltic birch plywood. I never liked it and finally gave up on trying to like them.

I have a preference for high mass speaker boxes, so the next design was going to be heavy. The panels for the pictured spkr weigh ~ 33#s/each, thus each spkr weighs ~ 100#s. The backside of the panels have mineral tile board glued to them, adding mass and damping. The core of the panels is 3/4" MDF. The center panel is clad with vinyl flooring tiles for damping and looks.

The front of the baffles are trimmed in scrap wood, mostly mahogany, that I had hanging around my shop for far too long and needed to be used. The need to use up the wood was also a big motivational factor in building this project.

I expected them to sound good and I'm pleased at how good they sound.

 

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RE: Scrap wood, posted on July 21, 2016 at 10:53:28
I imagine those side panels are hinged so you can play around a bit with the angles to see what works best in your room. It's a nice arrangement if you've got the available space. I always liked dipoles, and I imagine those sound very good.

 

RE: Scrap wood, posted on July 26, 2016 at 08:07:28
Toto
Audiophile

Posts: 20
Location: New York
Joined: December 5, 2007
With a similar setup, I recommend a 45° angle for the side panels relative to the front panel.

 

RE: Scrap wood, posted on July 26, 2016 at 09:02:36
I admire your ingenuity and getting the job done.

But my wife would insist that I move out if I put those things in our living room.

:)

 

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