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Joining the THT club

post #1 of 299
1/23/10 at 2:59am
Thread Starter 
So I decided to build a pair of THT's for my theater.

I will be using the dayton dvc everyone is using and 2 LT500 amps from eD.

I'm switching from 2 a7s-650s which are nice. I have a bit of an addiction and want 140db+ bass, so here's to hoping =]

Update: These are the loudest subs I have ever heard. They get loud effortlessly with a huge dynamic range. I'm talking so loud that I'm worried about damaging the structure of my house. I cannot find the limits of these subs. I haven't even been able to tell that I've been stressing them yet.

I was watching Terminator Salvation, and the scene with the old lady getting nabbed feels like you're there. It feels like you're in a house that's being destroyed. The robot's steps feel like they're right next to you. This is impressive because my subs are on a slab foundation. I can't describe how amazing these are. And VERY flat too after multeq xt.

http://countercultured.net/pics/ht/tht for the gallery.



























































































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post #2 of 299
1/23/10 at 7:01am
looking forward to your build notnyt. one big advantage may not be in max spl, but the 1/10th the power you will need to achieve any given spl. the benefits of high efficiency designs are too often overlooked. the max spl may be fun too though. :-)
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post #3 of 299
1/23/10 at 7:28am
Im not sure if the 140db goal is going to be gotten here you may get close. Thats insane bass levels and you do realize in room that has to potential to crack drywall and break things. But if your trying to get close to that i dont see why 130db+ is not a very realistic and capable goal with two of these colocated and corner loaded. Meaning them stacked on top of eachother with the horns mouth angled into a corner about 18" away. You will use alot of room by doing this but it will yield the best results. It gave me a 10db increase from 30hz down and about 5-6db above that with just one of these. Its hard to say what each room will give thats just what my room had to offer me by this placement. Have fun you will not be disappointed and let us know about the SQ comparison i personally think the SQ on these is unbelieveable.
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post #4 of 299
1/23/10 at 7:47am
Build two, if that's not enough. Build four. My two THT's is way too much for a untreated 40 year old house.
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post #5 of 299
1/23/10 at 12:35pm
Looking forward to seeing your progress.

Hit me up on IRC tonight.
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post #6 of 299
1/23/10 at 1:37pm
A pair how big is your theater? One is enough for me but I will build a 2nd one
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post #7 of 299
1/28/10 at 7:50pm
Thread Starter 
started some cuts, updated main post...

I have all the sides cut and the access holes cut. going to hopefully get them assembled tomorrow. I had to run to home depot twice for saw horses (first ones i got were broken).

I'm going to be staining these black.
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post #8 of 299
1/28/10 at 7:56pm
Looking good! Thats not 1/2 plywood or it looks thicker
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post #9 of 299
1/28/10 at 8:01pm
Quote:
Originally Posted by snickel View Post

Looking good! Thats not 1/2 plywood or it looks thicker

the showoff is making two THTs
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post #10 of 299
1/28/10 at 8:07pm
I am going to make a 2nd THT. Just need to finish my 5 or 7 SLAs first.I am working on the first 3 now
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post #11 of 299
1/28/10 at 8:19pm
Quote:
Originally Posted by snickel View Post

I am going to make a 2nd THT. Just need to finish my 5 or 7 SLAs first.I am working on the first 3 now

i hate you guys
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post #12 of 299
1/28/10 at 8:25pm
Smart idea to clamp the two pieces together so you only have to make cuts once. I used that idea for the bracing. It will definitely speed up your building process. You wont regret your decision. I want a second now lol.
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post #13 of 299
1/28/10 at 8:30pm
LOL if I clamped 2 pieces together I would just have twice as many mistakes.
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post #14 of 299
1/28/10 at 8:54pm
Quote:
Originally Posted by snickel View Post

LOL if I clamped 2 pieces together I would just have twice as many mistakes.

meh, a little duct tape will fix that right up
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post #15 of 299
1/28/10 at 9:00pm
Quote:
Originally Posted by mj79 View Post

meh, a little duct tape will fix that right up

Truer words were never spoken. If you cant duct it... well you know the rest
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post #16 of 299
1/28/10 at 9:02pm
Quote:
Originally Posted by reecew View Post

Truer words were never spoken. If you cant duct it... well you know the rest

hmmmmm no, nope i dont think I do > what IS the rese reece???
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post #17 of 299
1/28/10 at 9:03pm
Silly me I was using glue and bondo
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post #18 of 299
1/28/10 at 9:07pm
Thread Starter 
Quote:
Originally Posted by snickel View Post

A pair how big is your theater? One is enough for me but I will build a 2nd one

25x25, but opens up to a 1200+ sqft open floor... I'm already hitting 125db with my current setup, just want more =] its an addiction.


Quote:
Originally Posted by mj79 View Post

meh, a little duct tape will fix that right up

"if you cant duck it... **** it."

patience goes a long way. measure twice, cut once.. more like measure 5x, test the guides and make sure the blade is in the right spot at each end, then cut =]

I'll see how far I get tomorrow. I need to wire up an outlet in the garage so I can use my compressor, then its game time.
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post #19 of 299
1/28/10 at 9:08pm
Quote:
Originally Posted by snickel View Post

Silly me I was using glue and bondo

WE all make mistakes man, Just remember for next time. if you run out you can always use silly putty and scotch tape too
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post #20 of 299
1/28/10 at 9:09pm
Quote:
Originally Posted by notnyt View Post

"if you cant duck it... **** it."

patience goes a long way. measure twice, cut once.. more like measure 5x, test the guides and make sure the blade is in the right spot at each end, then cut =]

I'll see how far I get tomorrow. I need to wire up an outlet in the garage so I can use my compressor, then its game time.

This too


Nothing like buying a brand new 40 tooth finish blade to cut for my enclosure and having it be warped.. thats pretty awesome too
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post #21 of 299
1/28/10 at 9:20pm
Thread Starter 
Quote:
Originally Posted by mj79 View Post

This too


Nothing like buying a brand new 40 tooth finish blade to cut for my enclosure and having it be warped.. thats pretty awesome too

haha, i checked mine first =] it was sitting around a while.
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post #22 of 299
1/28/10 at 9:22pm
Quote:
Originally Posted by notnyt View Post

haha, i checked mine first =] it was sitting around a while.

Yea whenever Im working or need something at menards/lowes or HD I try to get in and out quick, otherwise it tends to get expensive.. Im like a woman at the mall
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post #23 of 299
1/28/10 at 9:23pm
40 tooth finish blade? Finish blade should have at least 60 teeth. I have a 90 tooth thin kerf finish blad for trim. Not sure if I would run it through ply though.
Check out Freud or amana blades. I'm a big fan of the freud blades. All the rest of the HD blades are complete junk.
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post #24 of 299
1/28/10 at 9:26pm
A cheap blade will burn when cutting plywood in my opinion
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post #25 of 299
1/28/10 at 9:33pm
Quote:
Originally Posted by Bbieger View Post

40 tooth finish blade? Finish blade should have at least 60 teeth. I have a 90 tooth thin kerf finish blad for trim. Not sure if I would run it through ply though.
Check out Freud or amana blades. I'm a big fan of the freud blades. All the rest of the HD blades are complete junk.

Yea I buy Nice thin 40 tooth blades, Less friction and have never had a bad cut in pretty much anywood.. Once they get a little beat up they get used as construction blades
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post #26 of 299
1/28/10 at 9:33pm
Quote:
Originally Posted by notnyt View Post

25x25, but opens up to a 1200+ sqft open floor... I'm already hitting 125db with my current setup, just want more =] its an addiction.




"if you cant duck it... **** it."

patience goes a long way. measure twice, cut once.. more like measure 5x, test the guides and make sure the blade is in the right spot at each end, then cut =]

I'll see how far I get tomorrow. I need to wire up an outlet in the garage so I can use my compressor, then its game time.

Man i am like a maniac when it comes to measuring and re-measuring. If its off even a hair i start all over. Id rather spend the TIME and not mess up then mess up and spend the MONEY to fix it. After all i DIY im a cheap skate lol. Well man keep up the good work. Sounds like you have a good head on your shoulder and know what your getting into. It really is a fun build to see it all come together. And in your case TWINS.
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post #27 of 299
1/28/10 at 9:36pm
..twins are good
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post #28 of 299
1/28/10 at 9:38pm
I have this one in the saw now


http://www.google.com/products/catal...640&sa=title#p

edit
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post #29 of 299
1/28/10 at 9:42pm
I use a Dewalt 18 volt cordless circular saw with a Dewalt plywood blade for the long cuts.
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post #30 of 299
1/28/10 at 10:12pm
Quote:
Originally Posted by snickel View Post

I use a Dewalt 18 volt cordless circular saw with a Dewalt plywood blade for the long cuts.

interesting.. I have the same saw but for finish cutting I went against the battery powered low rpm 4 inch blades
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