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post #361 of 640 Old 04-16-2014, 11:41 AM
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J Brown, the 3" brace you have running down the center of the port, does it attach to the opposite side of the cabinet wall? Also is there another brace that follows as the port turns up?
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post #362 of 640 Old 04-16-2014, 12:01 PM - Thread Starter
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There's a center support brace running down the middle of the entire length of the port.
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post #363 of 640 Old 04-16-2014, 12:13 PM
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Thx, and can you give the two port dimensions that form the total 47"length?
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post #364 of 640 Old 04-16-2014, 12:36 PM
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"Does the response calculator allow you to change the dimensions of a room that isn't exactly rectangular? The would be pretty cool in the was the case, then I could give you all of the exact dimensions of my room and see what it comes up with."

nah. it is a relatively simply calculator. rectangular room. two sources. one listening location. still, quite powerful and instructive though.

Listen. It's All Good.
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post #365 of 640 Old 04-16-2014, 03:29 PM
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Nevermind on the two dimensions I figured it out, 28.25" and 18". I decided on a built and tested design and yours just happens to fit so four it will be.
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post #366 of 640 Old 04-16-2014, 04:08 PM - Thread Starter
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Originally Posted by gpmbc View Post

Nevermind on the two dimensions I figured it out, 28.25" and 18". I decided on a built and tested design and yours just happens to fit so four it will be.

The total width of my port area is 19", its 47" long and 3" high.
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post #367 of 640 Old 04-16-2014, 04:54 PM
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I'm getting 19.75 for the width of the port?
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post #368 of 640 Old 04-16-2014, 05:01 PM - Thread Starter
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Originally Posted by gpmbc View Post

I'm getting 19.75 for the width of the port?

The total width of the cabinet is 22" wide, so subtract 1.5" for the double baffle, then .75" for the center support and another .75" for the back panel. That gives you 19".
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post #369 of 640 Old 04-16-2014, 05:08 PM
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I see what you mean, it is 19.75 to attach from front to back but the center brace detracts from the total. Did you line the cabinets or add any fill/pillows? Also, did your hi pass stay at 16hz and what slope? Thx
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post #370 of 640 Old 04-16-2014, 05:10 PM - Thread Starter
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Quote:
Originally Posted by gpmbc View Post

I see what you mean, it is 19.75 to attach from front to back but the center brace detracts from the total. Did you line the cabinets or add any fill/pillows?

No, I have a bunch of the egg crate foam but never put it in.
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post #371 of 640 Old 04-18-2014, 07:43 PM
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Just curious, how many sheets of ply did it take for the two enclosures?
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post #372 of 640 Old 04-18-2014, 07:59 PM
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Six
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post #373 of 640 Old 04-18-2014, 08:03 PM
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Thx, I coming up with 9 for four enclosures. I'll have to triple check my math.
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post #374 of 640 Old 04-18-2014, 09:17 PM - Thread Starter
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Quote:
Originally Posted by gpmbc View Post

Just curious, how many sheets of ply did it take for the two enclosures?

You'll need two sheets for the double baffles, one sheet to cut the two back pieces, you can get all the side pieces out of one sheet. And one sheet for the tops and bottoms and one for odds and ends like the port and bracing.
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post #375 of 640 Old 04-18-2014, 09:28 PM
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For one enclosure I came up with one sheet to get the front and back, the two port pieces and 3" port brace. A second sheet to get the top, both sides and the second front for double baffle. 3rd sheet only uses 32" x 22" for the bottom so could be used for 3 more bottom pieces. 4.5 sheets total for two enclosures or 9 sheets for 4 boxes. Bracing will be dowels or 2 x 2s attaching panel to panel.
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post #376 of 640 Old 04-18-2014, 09:58 PM - Thread Starter
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Originally Posted by gpmbc View Post

For one enclosure I came up with one sheet to get the front and back, the two port pieces and 3" port brace. A second sheet to get the top, both sides and the second front for double baffle. 3rd sheet only uses 32" x 22" for the bottom so could be used for 3 more bottom pieces. 4.5 sheets total for two enclosures or 9 sheets for 4 boxes. Bracing will be dowels or 2 x 2s attaching panel to panel.

Are you taking into account that the front baffle is doubled up? So it's two 3/4" pieces for the front. I personally wouldn't use dowels it's easier to rip the extra would into 1" strips and just use that.
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post #377 of 640 Old 04-18-2014, 10:50 PM
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Yep, you get the second baffle off the second sheet. I used 2 x 2s in my previous build seemed to work fine I'll probably just use those again.
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post #378 of 640 Old 04-18-2014, 11:39 PM - Thread Starter
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Actually now that I think about it you could get three front baffle pieces and three back pieces per sheet. So you could cut all eight front baffles and four back panels from only four sheets. Then two sheets for the side pieces and two sheets for the tops and bottoms, and then one sheet to cut up for the ports. Wouldn't hurt to spring for one extra sheet just in case.

So yeah I can see 9 sheets to make four subs. smile.gif
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post #379 of 640 Old 04-18-2014, 11:46 PM - Thread Starter
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On the second cabinet I found it really easy to do the bracing the same way that forum member notnyt did. I used strips that were ripped down to 1.25" and then I also cut little blocks from some of those strips. After doing that I measured out where the bracing was going and then glued and nailed those little blocks in place and then nailed and glued my bracing strips to the blocks.




the blocks were nice to use because the strips didn't have to be perfectly snug in place. It allowed you to have about a 1/16th of an inch of play and I was using expanding glue, so when it dried there was no gap at all. It turned out great, very sturdy. smile.gif
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post #380 of 640 Old 04-19-2014, 12:27 AM
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Noted, thx JBrown!
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post #381 of 640 Old 04-19-2014, 03:58 PM - Thread Starter
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Haha, so for fun I decided to play "Bass I Love You" today, I only had my master volume at -15 and I was hitting 118-119dB. eek.gif
Four of these things are going to be insane....lol

I was tickling the clipping light at that volume, I think I counted in coming on like four times during that song.
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post #382 of 640 Old 04-21-2014, 05:47 PM
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Did you end up using the minidsp for anything or just the inuke6000dsp? If the inuke6000dsp, how did you deal with the cutoff at 20hz? I'm going to be building a few of these once drivers are back in stock and I already ordered the inuke6000dsp so I'm hoping that works ok.
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post #383 of 640 Old 04-21-2014, 06:46 PM - Thread Starter
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Did you end up using the minidsp for anything or just the inuke6000dsp? If the inuke6000dsp, how did you deal with the cutoff at 20hz? I'm going to be building a few of these once drivers are back in stock and I already ordered the inuke6000dsp so I'm hoping that works ok.

Right now I'm just using the DSP from the inuke amp, and I've set up a 16hz high pass filter so that I don't bottom out the drivers under heavy bass. I do have a balanced miniDSP that I'm going to use, just waiting for the cables to come in that I ordered.

http://www.bhphotovideo.com/c/product/488060-REG/Hosa_Technology_PHX_106F_BULK_PNX_106FB_Phoenix_Connector.html
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post #384 of 640 Old 04-21-2014, 07:05 PM
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JBrown, couldn't you set the hi pass at 14/15 hz since you're tuned close to there?
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post #385 of 640 Old 04-21-2014, 07:18 PM - Thread Starter
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JBrown, couldn't you set the hi pass at 14/15 hz since you're tuned close to there?

Yes, I could easily lower the HP filter. Honestly I just haven't gotten around to playing with a different HP, I wouldn't want it set any lower then 14hz though.

These first two subs can get just down right silly if I want too. My theater is on concrete slab which makes it harder to get a tactical feel from subs, and honestly that was the case with my dual XS30's. You could feel them playing really low but they wouldn't do something like shack the chair you were sitting in. Well definitely not the case with the first two subs that I built, while playing "Bass I Love You" my theater seats were shaking like never before. I can't wait to get the last two build and have all four going at once! smile.gif
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post #386 of 640 Old 04-22-2014, 03:25 AM
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Yes, I could easily lower the HP filter. Honestly I just haven't gotten around to playing with a different HP, I wouldn't want it set any lower then 14hz though.

These first two subs can get just down right silly if I want too. My theater is on concrete slab which makes it harder to get a tactical feel from subs, and honestly that was the case with my dual XS30's. You could feel them playing really low but they wouldn't do something like shack the chair you were sitting in. Well definitely not the case with the first two subs that I built, while playing "Bass I Love You" my theater seats were shaking like never before. I can't wait to get the last two build and have all four going at once! smile.gif


You will be rocking! Very nice, sir!!!
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post #387 of 640 Old 04-25-2014, 12:33 AM
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I fired one up tonight and I think I'll be happy. After a little eq I'm flat from 13hz to 36 then a drop off. Maybe that will improve once elevated 10"off the ground which was my intention so I'll be close to the 1/4 points from the walls, floor and ceiling. Anyhow, output won't be an issue at all with one already goin strong and three more coming.
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post #388 of 640 Old 04-25-2014, 12:39 AM - Thread Starter
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Nice work! One is awesome, two will make you crap your pants, four will make you ____ yourself! eek.gif
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post #389 of 640 Old 04-25-2014, 12:44 AM
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Quote:
Originally Posted by gpmbc View Post

I fired one up tonight and I think I'll be happy. After a little eq I'm flat from 13hz to 36 then a drop off. Maybe that will improve once elevated 10"off the ground which was my intention so I'll be close to the 1/4 points from the walls, floor and ceiling. Anyhow, output won't be an issue at all with one already goin strong and three more coming.
.....................


i pop in for 2 minutes and find this. AWESOME!!! now you just need the one on the right to manifest as easily as i reversed the image. :-)

Listen. It's All Good.
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post #390 of 640 Old 04-25-2014, 06:49 AM
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Thx JB, and John that's exactly how it will manifest smile.gif
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