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Concrete Block speakers (Read 3916 times)
Donnie
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Concrete Block speakers
01/14/17 at 22:02:38
 
A guy who works for me just sent me this, I guess they would be good for "heavy" music.
http://danielballou.com/#cinder-speakers.





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Lin
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Re: Concrete Block speakers
Reply #1 - 01/15/17 at 00:57:07
 
Sealed woofer and ported tweeter?
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Donnie
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Re: Concrete Block speakers
Reply #2 - 01/15/17 at 01:35:44
 
Lin,
I thought the same thing at first. Then I noticed that the back was routed out to connect the chambers.
I really doubt that they would sound very good, but it would be a interesting project.
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Lin
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Re: Concrete Block speakers
Reply #3 - 01/15/17 at 05:08:59
 
A 2 chamber, dual ported alignment. Very high tech.

I saw these on another forum a while back and forgot that they are routed on the back. Embarrassed
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Lonely Raven
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Re: Concrete Block speakers
Reply #4 - 01/17/17 at 06:11:59
 

Nifty idea, except isn't a cinder block porous?



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4krow
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Re: Concrete Block speakers
Reply #5 - 01/20/17 at 01:49:23
 
 I like to see the ingenuity of what might be. There is a line somewhere when the 'clever' is not the best. Just saw a speaker using an old tire as the cabinet! Well, no, no, not a very high WAF.
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Lonely Raven
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Re: Concrete Block speakers
Reply #6 - 01/20/17 at 15:00:52
 
Low on the WAF factor and tires PING...but that's under pressure so...might not be so bad?

Honestly, it's not a big step to go from cinderblocks to casting your own concrete speakers. Back when I first started this audiophile journey, Steve's DIY speakers that I heard were built to be as stiff and dense as possible...I'm pretty sure he said double or maybe even triple layers of MDF and sand filled chambers.

If that was my goal, I'd do a TL speaker with chambers to fill with sand or lead birdshot. Imagine an El Camino speaker made entirely out of 1.5" concrete walls, then sealed with concrete sealant!?
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Re: Concrete Block speakers
Reply #7 - 01/24/17 at 00:31:26
 
LR,

 We are of the same type of thinking. If I build practically anything, it must be beefy and inert. As I recall the first set of speakers that I ever built were corner horns and weighed around 170 apiece. Never heard bass like that since.
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Lonely Raven
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Re: Concrete Block speakers
Reply #8 - 01/24/17 at 03:48:51
 

If I had a design I really liked and knew could be improved by density,  I'd be making concrete speakers all day long.

(sigh) One can dream, right?
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4krow
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Re: Concrete Block speakers
Reply #9 - 01/25/17 at 02:12:08
 
I know, right? I am always dreaming about products that I see in raw form wondering what they would be like. Corian for example, might be perfect for a front baffle if it is the right thickness. Then I see countertops poured either from resin or even concrete....hmmmm says I. They don't even try to help me at the local hardware store since they never know why I am asking the questions that I do. "Any idea of the resonance frequency of that copper pipe?"
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