Easy FTW21 designs? - AVS Forum
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post #1 of 12 Old 06-15-2012, 07:57 PM - Thread Starter
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I am trying to get someone local on CL to build me cabinets for FTW21s. I've got some good idea on what the dimensions should be (7 cubic feet) but I am not sure what to tell him about the internal bracing, etc; I also don't have the drivers in hand yet and I'm guessing that may be a problem wink.gif So any suggestions? I know eD can make them but that would more than triple the cost.

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post #2 of 12 Old 06-15-2012, 08:57 PM
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Something like this would be fine

494


Or you could double it up

454

A double thick baffle would also be nice.
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post #3 of 12 Old 06-16-2012, 05:44 AM - Thread Starter
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Thanks, really appreciate it!

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post #4 of 12 Old 06-16-2012, 10:52 AM
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Neo Dan had a 6.5 cF sealed design that I've built 6 times but I can't for the life of me find the cut sheet or the thread with the box in it. I use the same design for my FTW 21's with a windowed brace instead of the sheet with a hole cut in the middle he had designed. Both are fine as I've done it both ways and they both are very inert.
I'm sure someone knows that design?

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post #5 of 12 Old 06-16-2012, 12:40 PM - Thread Starter
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Well I found this one but it was for 18s and the front looks too small for a 21.

http://www.avsforum.com/t/1368642/tc-lms-ultra-18-5400-subs#post_21119752

Still digging, thanks for the pointer smile.gif

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post #6 of 12 Old 06-16-2012, 01:24 PM
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^^^

That's the one and nope, it could fit the 21" just fine. wink.gif

Doesn't get any easier than that and just one sheet of MDF per box.

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post #7 of 12 Old 06-16-2012, 02:14 PM
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Quote:
Originally Posted by madpoet View Post

Well I found this one but it was for 18s and the front looks too small for a 21.
http://www.avsforum.com/t/1368642/tc-lms-ultra-18-5400-subs#post_21119752
Still digging, thanks for the pointer smile.gif

Ya man thats it. I actually found the cutout sheet in my pics folder a few mins ago. Its a super easy build, someone can just use the FTW cutout and flush mount measurments and you are golden. I have 2 FTW's in those enclosures and 2 more being built as we speak. I like to take some scrap pieces of wood and brace from the brace back, as I use 1" MDF all around, front and back double baffled. They are heavy but are totally inert and work awesome.

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post #8 of 12 Old 06-16-2012, 02:40 PM - Thread Starter
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Many thanks! I am going to go for four as well ultimately wink.gif I need to get the cutout and flush mount measurements from them since I'm still waiting on them to ship.

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post #9 of 12 Old 06-16-2012, 08:16 PM
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Originally Posted by madpoet View Post

Many thanks! I am going to go for four as well ultimately wink.gif I need to get the cutout and flush mount measurements from them since I'm still waiting on them to ship.

The measurements are on Marks site.

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post #10 of 12 Old 06-17-2012, 06:29 AM - Thread Starter
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Yep realized that after smile.gif So Nate, how do you like them? I am replacing 3 CS 18.2s.

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post #11 of 12 Old 06-17-2012, 09:23 AM
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Just got mine built less than 3 weeks ago. Unbelievable performance and SQ. Click here to learn more.

24x21x35, 7cf cab size

Just can't get over how much better these sound and feel compared to my last setup! eek.gif
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post #12 of 12 Old 06-17-2012, 01:21 PM
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Quote:
Originally Posted by madpoet View Post

Yep realized that after smile.gif So Nate, how do you like them? I am replacing 3 CS 18.2s.
I can't imagine having anything better. I've had lms ultras, mal-x's, blah blah. All the good usual suspects and these as well as my mal-x 21's are my favorites for sheer HT destruction. The SQ is very good and effortless SLP at any level I've tried. So far, of the people that I've talked 2 that bought the subs, I haven't had one yet pm'ing me and saying anything but how awesome they are lol. I will be the first to admit that I'm a Mach 5 fanboy but it's with good reason. I've bough a crap load of subs from Mark and I've had nothing but great experiences with all of them. The 21's just go beyond what I was expecting as IMO, they even hit harder than my Mal-x 21's do. And I have the ability of driving 10 minutes from my house and picking them up smile.gif

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