Cut Sheet for a 4 cu ft Sealed Box - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 7 Old Yesterday, 06:25 PM - Thread Starter
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Cut Sheet for a 4 cu ft Sealed Box

I'm looking to build a 4 cu ft box for an SI DS-4. I have 2 in mini-marty's but they are a little to large for the room. Plus I need to add two more to the back of the room to take care of some room nulls. I need to know if anyone had a cut sheet for a sealed box that would net 4 cu ft after bracing and sub displacement. I was also thinking about using the cut sheet for a marty cube and modify the baffle for sealed instead of ported. Just wondering if anyone has tried using a sealed Marty Cube for an 18" sub.
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post #2 of 7 Old Yesterday, 09:09 PM
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https://www.diyaudioandvideo.com/Cal...akerBoxVolume/

This is what I use.. I then just use sketch up to lay the panels out for optimum usage of materials..

I just built a 4cuft box myself to test out because the mini Marty's I built are quite large..
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post #3 of 7 Old Yesterday, 11:51 PM
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What did you think about the loss in output. I am contemplating going from dual mini Marty to sealed as well, but don't want to lose too much bass.
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post #4 of 7 Old Today, 12:00 AM
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I swapped from a full marty to sealed 6 cubic foot and loss in output is pretty impressive. I needed smaller form factor too but I miss ported output.
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post #5 of 7 Old Today, 06:01 AM - Thread Starter
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Thanks for the link. That helped out a lot. I'm hoping by adding two more subs and another amp I shouldn't lose to much output. The power meters on the amp I have now barely move.
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post #6 of 7 Old Today, 10:00 AM
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You asked the question has anyone used a sealed Marty Cube for an 18" sub, yes I have. I started off with SI HT18 with the std vented Marty Cube as the addiction grew I went with a pair of HST's but read that they do better in a sealed enclosure so I sealed the vent. Within the past 6 months I bought 2 SI DS4 and found out these do really well in a larger enclosure. I took the HST's out and put the DS4's in they sound great I really like my HST's but the DS4 are no slouch either.

Yamaha RX-A2010 LCR BIC DV84's w/ 2 SX2400 amps, Volt6 front height w/nu3000, Volt6 surround w/ EPX2800, Polk Audio Rt-35 pwred by AVR,
Infinity 1262's 2 pair w/ nu6000,SI DS4's in 2 sealed Marty Cube w/ IT 8000, 2 SI HST18's in Dual Opposed w/ A14K
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