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  #1  
Old 08-19-2009, 10:11 PM
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Default New enclosure idea, but I have no idea how to calculate it...

So I was looking through Steve Mick's build log on Termpro the other day, and I had a crazy idea... I'm thinking about something similar to what he did circa last April, except with 4 8s instead of 8 18s... Pics of what I'm talking about:





It appears to be 2 baffles loaded with the subs that are ported through the center of said baffles. Someone said something about the tuning having to do with the volumes of the 3 chambers and the distance between the 2 baffles and the back wall of the enclosure. Can/does anyone care to explain it?

The problem is I don't know what type of enclosure it is, or how to do any calculations on it... I tried PM'ing Steve, but his PM box is full over there. So, if anyone can help me, that'd be great... Thanks in advance.
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Old 08-19-2009, 10:14 PM
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Cant really tell from the pics but it looks like the "port" is tapered. Maybe just the way the pic was taken.
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Old 08-19-2009, 10:16 PM
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Link to build: CAMP PRODIGY the van rebuild BANDPASS PICS

Yes, the port is tapered. And I got those pics from page 3 of the build log
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Old 08-19-2009, 10:24 PM
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would be hard to do sorta like tuning a tapped horn
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Old 08-19-2009, 10:24 PM
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Looks like it could be some sort of tapped horn. Hard to tell from pics. I should really read the build log for more info.
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Old 08-19-2009, 11:05 PM
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So neither of you guys (or anyone else) have any ideas? Damn, I really wanna try something like this in the spring... I guess I have time, but I have a feeling the math is going to take quite some time to get right...
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Old 08-19-2009, 11:06 PM
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I can't design horns
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Old 08-19-2009, 11:33 PM
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If it is a tapped horn I may be able to help out somewhat. Your best bet is to do some research in quarter-wave.com on horn theory and get yourself a copy of a horn design program. Something like hornresp or akabak works well. Get familiar with the deisng concept and figure out if the benefits are worth the effort.
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Old 08-19-2009, 11:45 PM
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it looks like a ported clamshell
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Old 08-19-2009, 11:48 PM
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Quote:
Originally Posted by bd5034 View Post
it looks like a ported clamshell
if you look at it closely you will see the "port" walls or baffles are slanted so it's different to tune than a regular box
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