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

post #301 of 417
Quote:
Originally Posted by jpmst3 View Post

Yes!
We need the new Lil' HW thread!!
Please, please!!!

Radman12 and I were just discussing that....it is on the to-do list.
post #302 of 417
Thread Starter 
Quote:
Originally Posted by MKtheater View Post

Can these put out 130 dBs at 10hz with 11% THD in multiples? How much would it cost?

No. A pair will do ~~125 to 15hz with moderate distortion, You'll need a whole lot more woofer, and much bigger horns for 10hz. We shrunk the original horn to make them much more "normal space" useable. IOW not require holes cut through walls to house the enclosure in another room, and able to fit flat up against a wall under a normal 8' ceiling - and fit reasonably well behind a screen if someone has a shallow false wall. (between 18 and 20"s depth)
post #303 of 417
Way to go, REPRESENT for Kicker! Big fan right here. The CompVX 15" is definitely a sub I've had my eye on (OK I admit I've also thought about getting an 18" Solo-X).
post #304 of 417
Quote:
Originally Posted by dB-Kicker View Post

No. A pair will do ~~125 to 15hz with moderate distortion, You'll need a whole lot more woofer, and much bigger horns for 10hz. We shrunk the original horn to make them much more "normal space" useable. IOW not require holes cut through walls to house the enclosure in another room, and able to fit flat up against a wall under a normal 8' ceiling - and fit reasonably well behind a screen if someone has a shallow false wall. (between 18 and 20"s depth)

I did own 4 F-20's and dual DTS-10's. I have 12 13's right now in a sealed array and 14k watts. The most impressive setup I have owned so far, both subjectively and objectively(THD testing and response)
post #305 of 417
I love kicker stuff. In both my car and truck I have kicker subs and amps. Truck has 2 x 12" CVT's and my car has 2 x 12" L7's both running IX 1000.1's my car is all QS series and my truck is JL speakers. Gotta love the fact I can get any kicker products at cost smile.gif

Makes me want to build this to try out smile.gif
Edited by N8DOGG - 12/5/12 at 6:43pm
post #306 of 417
Quote:
Originally Posted by N8DOGG View Post

I love kicker stuff. In both my car and truck I have kicker subs and amps. Truck has 2 x 12" CVT's and my car has 2 x 12" L7's both running IX 1000.1's my car is all QS series and my truck is JL speakers. Gotta love the fact I can get any kicker products at cost smile.gif
Makes me want to build this to try out smile.gif

loooove kicker amps. dig the subs.

their door speakers can go to hell though biggrin.gif HATED every kicker door speaker I tried.
post #307 of 417
Thread Starter 
theHouseWrecker v7.1 number one (of three currently under construction - two into this room) going up.

Drew - you're Kickin Ace and Takin Names. Can't wait to hear your first impressions once we get you EQ'd and fired up smile.gif











post #308 of 417
eek.gif I can't wait to see what that thing does! eek.gif
post #309 of 417
That's a sub all right.
post #310 of 417
Actually - that's version 7.2... 7.1 was not quite right - had to fix it...

Regardless - this should "fix" this design to incorporate a few of the things I've learned along the way.
post #311 of 417
What are the external dimensions? What's the frequency response look like?
post #312 of 417
Thread Starter 
we haven't measured it yet. Start tomorrow. The cut-list, and Google sketch-up files are attached. theHouseWrecker.zip 115k .zip file
post #313 of 417
Cool thanks
post #314 of 417
Sure looks like a fun build. biggrin.gif

Not so much fun to move once built. tongue.gif
post #315 of 417
file saved lol , been watching this thread of a beast also

Used to be a kicker fan in the late 90s with 2x comp 12s and linear power juice (2202iq and 2502iq) they absolutely slammed and pushed out back windows. Ahhh memories.
Nice build. With subs this size you just put heavy duty castors on them to move. We did this to the dts10s, problem solved. Need behind it we unbolt from the supports and roll it carefully out in an arc.
post #316 of 417
I like big horns and I cannot lie.....A little different wrecker:)



post #317 of 417
Those look nice Radman whatcha got there?
post #318 of 417
Man, my back still hurts...

Those would be the lilwrecker, mentioned earlier in this thread.
post #319 of 417
Quote:
Originally Posted by dB-Kicker View Post

theHouseWrecker v7.1 number one (of three currently under construction - two into this room) going up.
Drew - you're Kickin Ace and Takin Names. Can't wait to hear your first impressions once we get you EQ'd and fired up smile.gif







So, is there an access panel to get to the woofer?

Looks great!


Robert
post #320 of 417
Couple of comments on 7.2.

We've got two builds going on, dB's at 16.5" internal, and another pair at 18" internal.

The tune is the same, about 16 Hz. This is pretty much all I can get out of a CVX 15 as far as extension in a tapped horn. We do run out of linear excursion, same as with the lilwrecker. Highpassing at 15 is a very good idea.

Model says > 90 dB at a watt in above 16 Hz, -3 dB at about 15 Hz, about the same as the lilwrecker. Seriously - these are within a dB and a Hz.

I think that the 18" internal version looks a bit better than 16.5"

The pics posted are 18" internal. dB just has a bunch of wood already cut to 16.5, and that will work too.

More details and measurements to come, as well as more info on the lilwreckers.
post #321 of 417
Quote:
Originally Posted by robertcharles View Post

So, is there an access panel to get to the woofer?
Looks great!
Robert

Lay it on the side, reach in through the mouth, drop the driver into place.

Not exactly "easy" but access panels that don't leak and stay tight at 120 dB are not exactly easy either.
post #322 of 417
Actually, I was asking about the big ones, but I can understand about the leaks.

Thanks,

Robert
post #323 of 417
Quote:
Originally Posted by lilmike View Post

Couple of comments on 7.2.

We've got two builds going on, dB's at 16.5" internal, and another pair at 18" internal.

The tune is the same, about 16 Hz. This is pretty much all I can get out of a CVX 15 as far as extension in a tapped horn. We do run out of linear excursion, same as with the lilwrecker. Highpassing at 15 is a very good idea.

Model says > 90 dB at a watt in above 16 Hz, -3 dB at about 15 Hz, about the same as the lilwrecker. Seriously - these are within a dB and a Hz.

What's the bandwidth of each? Does one go higher than the other?
post #324 of 417
Radman12's were -3 dB at about 15 Hz, and were fine to about 100, though he's crossing a little lower than that IIRC.

He uses an MiniDSP for EQ and crossovers, and powers the pair with an EP4000

A thread dedicated to those will come - just been too busy to give it the attention it deserves.

As far as the new ones? They simulate within a dB or two where it matters. We'll know more once we measure the new ones.
post #325 of 417
Quote:
Originally Posted by robertcharles View Post

Actually, I was asking about the big ones, but I can understand about the leaks.
Thanks,
Robert

Drivers on both designs were installed during the build, but in both cases, they are accessible through the mouth.

It won't be easy, but it can be done.
post #326 of 417
Thread Starter 
Quote:
Originally Posted by DS-21 View Post

What's the bandwidth of each? Does one go higher than the other?

I had already cut up a bunch of 16.5" internal panels for wrecker 5.1a #2. The difference between 16.5" and 18" are depicted below.


This is the difference between 5.1a and 7.2.


Measurements on a pair of 7.2's in 18" width Sunday..
post #327 of 417
Hey lilmike, radman, and DB-kicker- a bit off topic, but have you ever modeled this sub in any horn configurations? I have a pair just laying around that would be fun to put to work in such a configuration. Rockford power hx2 15.

Product Name: RFR3115
Nominal Diameter: 15 in (381 mm)
Magnet Weight: 203oz (5755 g)
Frequency Range: 22-200 Hz
Nominal Impedance: 2 x 2 Ohms
DC Resistance (Re): 2 x 2.16 Ohms
Resonance Frequency (Fs): 22 Hz
Total Q Factor (Qts): 0.38
Electrical Q Factor (Qes): 0.41
Mechanicql Q Factor (Qms): 5.837
Effective Cone Area (SD): 133 in^2 (0.86m^2)
Equivalent Air Volume (Vas): 3.47 ft^3 (98.4 L)
Compliance (Cms): 1.28E-04 m/N
Moving Mass (Mms): 13.56oz (384 g)
Voice Coil Diameter: 4 in (102 mm)
Voice Coil Winding Width: 1.98 in (50.3 mm)
Voice Coil Former Material: 5 Mil Aluminum
Voice Coil Inductance: 1.74 mH
Linear Excursion (Xmax) 0.74 in (19 mm)
Sensitivity (SPL): 87.9 dB
Operating Power (PE): 1000 W RMS / 2000 W Peak
post #328 of 417
Thread Starter 
theHouseWrecker 7.2 First before and after DSP throat measurement. I didn't make up for the high pass on the bottom = reason for small drop at LF post EQ. Teaching REW / Mini DSP use over the phone - trading curves through cell phone pics (home has no internet) is difficult at best.


Edited by dB-Kicker - 12/16/12 at 2:10pm
post #329 of 417
Hey all. Been crazy busy but thought Id take a few mins to reply. We have build the latest version of the HW and i just wanted to voice my opinion on a few things. Deon and Mike have been an amazing resource during this project...without them I wouldnt never attempt a box like this. Ive been in the A/V industry for about 20 yrs and have always followed enthusiast websites such as this. This box design first intrigued me because it was unique and new to me.
Currently we have 1 of the HW in a dedicated room that is about 15.5 wide and 21 deep 9ft ceilings. were using sonance lcr1 front stage lcrs and surround lcr1 for surround in a 5.1 system. pioneer sc65 reciever and then using the HW and a mini DSP off a EP4000 for sub duties.
were currently dialing in the DSP and playing with tuning. I will be back at the job site today and hope to get it completely dialed in very soon.
I wanted to thank deon and mike for all the assistance thus far, Ive learned a lot about this design and most of all.....its been a lot of fun.
Performance so far. simply put the low end output is just stupid. i have never, and i mean NEVER had this kind of low end output in a sub before and we have done about every type of sub/multiples and so on. ITs hard to explain exactly what im hearing as honestly ive never heard bass like it before. The sensitivity and transients are outstanding. i was watching a fight scene from mr. and mrs smith. the part where shes blowing holes thru the drywall with a shot gun and the definition and output was impressive to say the least. the entire damn room feels like its compressing on those deep notes. This house has brand new extremely thick carpet and a new plush leather couch....couple of scenes were literally vibrating my ass while sitting in the couch....I kid you not...crazy.
were stil working on the dsp and getting her dialed in. I made the mistake of orderin a non balanced dsp so were bumping the line voltage up with a line driver before it gets into the ep4000 and im having a few issues with over driving the input....ill get those worked out soon and get the dsp lined out so we can get some more headroom. but all and all.....pretty damn amazing sub.
well post some more pics and graphs as it comes more online
-Drew
post #330 of 417
Thread Starter 
Apologies all for lack of measurements posted today. We're having equipment issues. Yesterday involved grounding issues, lack of cables, running back and forth, installing bump box, working on gains (not finished) etc.. Today - MiniDSP won't work. Been beating our heads against a wall. Will update as we work through it.

Aside from Teething issues with everything But the sub - Drew is absolutely head over heals intoxicated with the capabillity of theHouseWrecker v 7.2.. H e's never ever experienced this level of clean, articulate, DEEP effortless bass in a home. From a single driver? Is a revelation smile.gif

Killer Good Job Mike!!
Edited by dB-Kicker - 12/19/12 at 9:41am
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