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the HouseWrecker. 11hz Twin CVX-15 Tapped Horn - Page 9

post #241 of 385
2/15/12 at 3:58pm
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Quote:
Originally Posted by Ricci View Post

Doesn't really look like you will need an access panel. Should be able to get at the driver and wiring enough to get it out through the mouth right? The back screws on the driver might be a PITA though. Maybe use some allen head screws similar to the ones TC Sounds uses so you don't have to worry about stripping the screw heads out.

We'll find out soon enough. Not sure I can get the DeWalt around the driver once the side panels are in place. Fall back for me = install driver before buttoning up. If I ever need to yank it - cut a panel then drop a full length side panel over the existing with a built in access plug oo the inside.

Niiiiice job on Data Bass Ricci.. May want to jingle you once I get these running.
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post #242 of 385
2/15/12 at 4:29pm
If you use allen head bolts, you can use a ball end allen wrench to drive it even at an angle. They work really well.
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post #243 of 385
2/15/12 at 8:31pm
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Quote:
Originally Posted by gpmbc View Post

Just curios, since the initial plan has now become 2 enclosures, how do you think one will compare to one DTS 10?

Can't answer that w/o a model of the DTS. I'll post measurements soon as I have one finished.

Some progress photo's..

Working on a friends truck tommorrow - won't get much more done till probably Friday.

Need to cut braces yet, and have two panels left to install..

Should make it's first noise Friday night.
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post #244 of 385
2/15/12 at 11:24pm
will this horn design be good for music or is this balls to the wall home theatre megas beast mode bass? wonder if this application would sound good with fast double kick-drum. hmmm....
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post #245 of 385
2/16/12 at 12:40am
mr. hen, the lower that any resonant enclosure is tuned, the less efficient that it will be at producing higher frequency bass. for your application (metal), you don't really need much below about 35hz, but you do need VERY high spl.
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post #246 of 385
2/16/12 at 6:15am
Quote:
Originally Posted by dB-Kicker View Post

Can't answer that w/o a model of the DTS. I'll post measurements soon as I have one finished.

Dont want to take anything from this thread but Ricci measured the DTS-10 and on his website are the measurements.

Anyways back to the thread.
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post #247 of 385
2/16/12 at 7:54am
Quote:
Originally Posted by dB-Kicker View Post

Some progress photo's..

Working on a friends truck tommorrow - won't get much more done till probably Friday.

Need to cut braces yet, and have two panels left to install..

Should make it's first noise Friday night.

Cool.

Go beefy on the bracing. That is one area you shouldn't skimp on with horn subs (if you plan on letting them stretch their legs occasionally.) There is a reason that Tom D. put all of that bracing inside of the DTS-10.
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post #248 of 385
2/16/12 at 9:53am
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Quote:
Originally Posted by speckled hen View Post

will this horn design be good for music or is this balls to the wall home theatre megas beast mode bass? wonder if this application would sound good with fast double kick-drum. hmmm....

I think somewhere in this thread I mentioned this is my ULF sub-woofer. That said - this woofer is still a 3+ octave sub.

I have 6 powered 10's covering "woofer" duty. See photo.

Quote:
Originally Posted by chrapladm View Post

Dont want to take anything from this thread but Ricci measured the DTS-10 and on his website are the measurements.

Anyways back to the thread.

Yep, I know . I don't have measurements to compare to measurements. A model compared to a measurement is an apples to Orchard comparison.
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post #249 of 385
2/16/12 at 9:58am
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Quote:
Originally Posted by Ricci View Post

Cool.

Go beefy on the bracing. That is one area you shouldn't skimp on with horn subs (if you plan on letting them stretch their legs occasionally.) There is a reason that Tom D. put all of that bracing inside of the DTS-10.

They will be well braced. Akin to the bracing in my other tapped horns - see photo's..
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post #250 of 385
2/17/12 at 5:05pm
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Quote:
Originally Posted by gpmbc View Post

Just curios, since the initial plan has now become 2 enclosures, how do you think one will compare to one DTS 10?

Again - I can't tell you how they will till I measure them. Here's a 1 watt model comparison for a single cabinet.

The CVX's have more power handling, and more throw. No clue about peak number comparison's, distortion comparisons, etc...

Every TH I've built from Mike has measured better than modeled (lower corner) - but that's pure speculation, won't know till I get em measured.

Working on bracing now between taking care of our 3 y/o - then the final two panels and glue.

have a Crown K2 for measurement, but the mic is only good to ~~ 125dB, so distortion will be 10 meter measurements.

I'll do Raw, (no EQ) and EQ measurements if I can when I get to them too. Curious if distortion components are reduced when the resonances are notched..

Not sure if I'll get them over the weekend - hoping weather stays above freezing in the afternoon.

The Wrecker with a single CVX is the fainter line, DTS is bold.
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post #251 of 385
2/17/12 at 5:40pm
My TH's came in a little lower cornered than designed as well and Tom said the DTS-10 did too. Expect a little more for these too.

Nice brace job on the cab in the pics.
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post #252 of 385
2/17/12 at 9:18pm
Quick point of clarification - that's a guess at the DTS...and a simplified one at that.

Still - should serve well enough for comparison purposes in the model realm. SPL measurements trump models any day, and Ricci did a fine job measuring the DTS, I'm pretty sure that dB will also do a fine job measuring the wrecker, I also expect that he'll get to know Chief McCaghren too....
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post #253 of 385
2/17/12 at 9:44pm
Lol
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post #254 of 385
2/18/12 at 6:22pm
That's a sick build! I'm guessing it's not your first, and that you have experience woodworking.
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post #255 of 385
2/18/12 at 9:35pm
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Quote:
Originally Posted by Subjga View Post

That's a sick build! I'm guessing it's not your first, and that you have experience woodworking.

Hi Subjga,

I'm only a neophyte with respect to woodworking skills. Put myself through school roofing - did a lot of general contract work, siding, windows, decks, garage doors, adding stories to existing homes etc. Nowhere near a skilled woodworker, but 'quasi handy'.

I can measure, make straight cut's, screw stuff together, etc..
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post #256 of 385
2/18/12 at 9:37pm
are you in stillwater mn? If so, i'd love to give that a listen when finished!
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post #257 of 385
2/18/12 at 9:40pm
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Originally Posted by stormwind13 View Post

are you in stillwater mn? If so, i'd love to give that a listen when finished!

Yes Sir! You are more than welcome - I will post once I'm 'there'. Actually - firing one off right now, glue's still wet tho - have to wait till she dries to honk on it. ... Have another to assemble the other yet - then paint and tune everything...
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post #258 of 385
2/19/12 at 11:28am
Quote:
Originally Posted by stormwind13 View Post

are you in stillwater mn? If so, i'd love to give that a listen when finished!

Same here!
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post #259 of 385
2/19/12 at 6:55pm
Love the work pics At a guess you're into subs cos you've no hf hearing left , youme and ron mogal
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post #260 of 385
2/20/12 at 12:44pm
See what we need to do is convince lukeamdman that he needs to upgrade again. So then I swoop in and buy his lms5400 ultras!
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post #261 of 385
2/20/12 at 1:54pm
Awesome build! I just did a single Kicker 08S15L74 in a T-TQWT (negative flare tapped horn) for my home theater. I LOVE IT!
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post #262 of 385
2/20/12 at 4:46pm
Quote:
Originally Posted by stormwind13 View Post

See what we need to do is convince lukeamdman that he needs to upgrade again. So then I swoop in and buy his lms5400 ultras!

Ha, the only "upgrade" is adding more 5400's! Unless TC Sounds decides to make a 21" version...then I'd upgrade
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post #263 of 385
2/21/12 at 10:02am
Thread Starter 
Only have a couple minutes, I will edit post later.

Used the headphone output from my 6 year old laptop to drive a pro amp - measured in the house - the output at the Mouth. SPL is a relative only to shape - not actual SPL.

#1: Mouth Measurement
#2: Mouth plus measurement with mic in middle of listening location's.
#3: Mouth measurement compared to modeled response.

I did not get to take it outside - and did not have a good sound card for a signal source - I doubt the laptop headphone out is flat especially at VLF.

Took a short video of a kitchen wall moving back and forth some 3/8 to 1/2" with ~~ 104dB at listening position @ 19.5hz. Will see if I can post later.

More info tonight.. It is a beast. Starting on Wrecker #2 tonight. Once it's built - hope it won't be raining out, when I can grab friends to haul it outside..

Edit. Installed and measured using the Transit USB from my Praxis workstation - re-measured throat SPL and posted comparison using Transit for generator VS headphone output..
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post #264 of 385
2/21/12 at 10:38am
Looking good
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post #265 of 385
2/21/12 at 10:50am
Nice!
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post #266 of 385
2/21/12 at 12:11pm
jaggy
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post #267 of 385
2/21/12 at 5:36pm
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Don't know if we're supposed to attach links to other sights in here - but I'm not sure how else to show a video?

Thought I'd put one up showing the kitchen wall being energized by a 19.5hz signal.. Loaded it on FB - the conversion process lost a lot of the detail - can't see nearly as clearly as the original.

I'll see if this link works - if not my apologies. Also apologies if I'm breaking any AVS rules?
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post #268 of 385
2/21/12 at 5:52pm
Quote:
Originally Posted by dB-Kicker View Post

Don't know if we're supposed to attach links to other sights in here - but I'm not sure how else to show a video?

Thought I'd put one up showing the kitchen wall being energized by a 19.5hz signal.. Loaded it on FB - the conversion process lost a lot of the detail - can't see nearly as clearly as the original.

I'll see if this link works - if not my apologies. Also apologies if I'm breaking any AVS rules?

http://www.facebook.com/video/video....53095138045626

not breaking rules, but your link doesnt work.
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post #269 of 385
2/21/12 at 5:56pm
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Originally Posted by notnyt View Post

not breaking rules, but your link doesnt work.

Guess it only works for me. Dernit. it's hosted on FB. Works when I hit it but I'm also logged in.

Email me offline if you want me to send a copy. nothing special - just ~~ between 1/3 and 1/2" P-P wall displacement..

Camera doesn't catch it very well. But you can see it when I touch the wall with the camera in hand.
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post #270 of 385
2/21/12 at 6:13pm
There's always Youtube, if nothing else.

I have the same problems with cameras when I try to video sine waves of my horns. I can get the drop ceiling flapping up and down like crazy, but on video it looks like nothing special.
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