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In Reply to: RE: Cinder Block Speakers? posted by Mike B. on April 20, 2016 at 08:53:26
I just looked at the pictures. Is there no bracing from front to back?
ET
Follow Ups:
I assume there is a center divider cast into the cinder block. The only way I would attach the front and rear baffles to it would be with a thick bead of RTV type material. I would also use a foam type gasket for the woofer. This is very limited enclosure if you consider the small interior volume if the divider is in place. Some of the inexpensive enclosure/ drive kits from Parts Express would be better IMO.
Looks like a good idea from a resonance POV. The front baffle and back panel seem to be coupled together via four rods or wooden inserts (notice the four black dots with likely four adjustable screws within them), with a big chuck of high-mass concrete in between as a frame. It's the particular drivers and unknown crossover design/parts that's a mystery to me...
Hi Duster,
I use cinder blocks for speaker stands. I looked all over for 12" stands. They are not common anymore except flimsy wood stands. I noticed that cinder blocks were the right height. I tried them and they sound very good.
Dave
I put together an audio system at a relatives house, and used two cinder blocks stacked on top of each other, positioned on a spiked MDF board as a speaker stand base, and liked what I heard. IIRC, I used four Blue-Tack balls as an interface between the two cinder blocks, and between the top cinder block and the loudspeaker bottom panel.
I do plan to add spikes and some kind of damping. Blue-Tack sounds like a good, reasonably priced solution. I had already bought some spikes, but they disappeared (long story!).
Dave
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