18" ultimax pair + iNuke 6000 custom build w/ pics - AVS Forum
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post #1 of 77 Old 01-26-2014, 08:44 AM - Thread Starter
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I'm going to document my first build project after years of reading about others'. Any and all comments or advice welcomed.

I'll keep this thread updated with pictures of the entire process.

I've read a ton of posts and this seems like the best time to be building a couple subs! I'm finally moving into a house we built and my old faithful MFW-15 won't fit in my built-in cabinet.

And of course I need more bass! The new room is 32'x30'x9'.

My cabinet depth is only 17" deep but plenty wide to get a 4.35 cu ft sealed box in it. In the picture below, they would go on each side of the mains.

I put in two dedicated 20a circuits, but could add more as needed.

The guts:
1x Behringer NU6000DSP iNUKE 6000W (change the fans out with these).
2x Dayton Audio UM18-22 18" Ultimax subwoofer

Based on my built in theater built-in cabinets, I'm looking at the subwoofer cabinets being 26"W x 24"H x 15"D = 4.35 cu ft.

My questions if you have advice:
-Does this make sense?
-How does the wiring work with the DVC and ohms back to the amp?
-Do I have everything I need on the parts express cart? I already have 14 gauge speaker wire.
-Do I need the CLEANBoxPro?

Also- I don't have the woodworking tools to build the cabinet- any ideas on where to I could get the custom cabinet?








Resources:
Cut list generator: http://www.optimalon.com/PanelCutOptimizer.aspx
box volume calculator http://www.diyaudioandvideo.com/Calculator/Volume/

parts express:
http://www.parts-express.com/behringer-nu6000dsp-inuke-6000w-lightweight-power-amplifier-with-dsp--248-6710
https://www.parts-express.com/dayton-audio-um18-22-18-ultimax-dvc-subwoofer-2-ohms-per-coil--295-518
https://www.parts-express.com/bi-amp-speaker-terminal-cup-gold-banana-binding-post--260-281
https://www.parts-express.com/art-cleanboxpro-stereo-balanced-unbalanced-converter--245-868
https://www.parts-express.com/speaker-gasketing-tape-1-8-x-3-8-x-50-ft-roll--260-540
https://www.parts-express.com/neutrik-nl4fx-speakon-spx-cable-connector-4p--092-190
https://www.parts-express.com/6-x-3-4-deep-thread-pan-head-screws-black-100-pcs--081-435
https://www.parts-express.com/banana-plug-pair-compression-type--091-330


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post #2 of 77 Old 01-26-2014, 12:40 PM
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Enclosure looks ok, after bracing and driver displacement it should come to 4cu ft. You should also brace the rear of the cabinet and the front if possible. You'll need polyfill (walmart pillows) or fiberglass for the inside of the enclosure.

 

http://www.the12volt.com/caraudio/woofer_configurations.asp

 

 

 

What receiver do you have? Most people are fine without a boost box. You can also measure how many volts the LFE can output using a test tone and multimeter.

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post #3 of 77 Old 01-26-2014, 06:53 PM
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should thump good.
Did you get XLR cables to go with that? wink.gif

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post #4 of 77 Old 01-27-2014, 08:38 AM - Thread Starter
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Thanks guys, both good suggestions.

Thank you for that diagram, that's what I was thinking but wasn't sure.

The current receiver is a Yamaha HTR-5990, but I'll probably upgrade that too. biggrin.gif

Ordered the speaker today, back ordered until 2/12.


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post #5 of 77 Old 01-27-2014, 09:14 AM
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Quote:
Originally Posted by jhgkak View Post

Thanks guys, both good suggestions.

Ordered the speaker today, back ordered until 2/12.
Ah buddy,get in line lol,i pre-ordered one as well a couple of weeks ago. I would build my sealed enclosure but givin that this sub is a air moving monster,ima have it built at my local stereo shop.im running a iNuke 3000 with a miniDSP. Lets see who gets their build up first lol
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post #6 of 77 Old 01-27-2014, 09:32 AM - Thread Starter
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One more question- does anyone know how many DB I might expect at 20hz?


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post #7 of 77 Old 01-27-2014, 12:37 PM
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Quote:
Originally Posted by jhgkak View Post

One more question- does anyone know how many DB I might expect at 20hz?
Your box modeling software program, such as WinISD, will tell you that. I can't see anywhere that you used one.

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post #8 of 77 Old 01-27-2014, 03:17 PM
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two notes:
1) You don't need the art cleanbox pro with the iNuke amps in most situations.
2) You can get the iNuke DSP amps cheaper on ebay by at least $100 than parts-direct if you are comfortable with ebay.
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"Without subs it's just background music - with subs it's the main event!"

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post #9 of 77 Old 01-27-2014, 04:59 PM
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Quote:
Originally Posted by jhgkak View Post

One more question- does anyone know how many DB I might expect at 20hz?

18 UM 4cf 1500w.. This is what the driver comes in at taking xmax into account with no dsp driver plopped in 4cf.

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post #10 of 77 Old 01-27-2014, 06:30 PM
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^^ One thing to remember at that much power it doesn't give you any room to add any dsp down lower although it’s been suggested it has more to give. You’re in a large room so your room gain wont come in like a sealed up 1000-1500cf room.. but then your building two. Sounds like a great build though. Congrats!
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post #11 of 77 Old 01-27-2014, 06:37 PM
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Without the Cleanbox you won't need xlr,
just RCA to TRS.
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post #12 of 77 Old 01-27-2014, 06:39 PM - Thread Starter
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Thanks steve nn! I can never get winISD to output anything useful. I'm researching that now, but based on your graph, I'm excited to get this project done!

I'm about 95% music and the 30-80hz range seems to be where it hits the hardest in rock.

I figure this amp is only $400-$500 and it will hopefully last forever.

That and under powered amps can kill a driver if they start clipping?


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post #13 of 77 Old 01-27-2014, 07:02 PM
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That cutlist panel optimizer is not making it easy on you...check this layout out...much much simpler as you only have to adjust the table-saw (assuming you are using one) 4 times....first at 26, then set it to 13.56, then 22.56, then set it to 24.
My solution is not as efficient, but it is much easier.

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post #14 of 77 Old 01-27-2014, 07:21 PM
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Quote:
Originally Posted by jhgkak View Post


I'm about 95% music and the 30-80hz range seems to be where it hits the hardest in rock.

I figure this amp is only $400-$500 and it will hopefully last forever.

I'm thinking you'll like these for music! I have 2 UM 15's in 4 cu/ft. boxes - they're awesome for music & movies. Now thinking about adding 2 UM 18's, so I'll be interested in hearing your experience. Subbed.

Archaea mentioned EBAY as a source to save on the iNuke, make sure you search the Web for deals. smile.gif

Have fun!

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post #15 of 77 Old 01-27-2014, 07:44 PM
 
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Go to Home depot, grab your 4'x8' sheet of 3/4" thick mdf (or better yet have the guy in the wood department help you) and ask him to make cuts for you.  They do this for free!  YES - FREE!  No need to buy a table saw / etc.  All you will need is maybe a handheld jigsaw , orbital sander, glue, and some clamps.  This is my local Home depot dude helping me out with my Marty sub box.

 

 

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post #16 of 77 Old 01-28-2014, 05:58 PM
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Quote:
Originally Posted by steve nn View Post

18 UM 4cf 1500w.. This is what the driver comes in at taking xmax into account with no dsp driver plopped in 4cf.


You sub modelers need to unionize!

This is what Scotty came up with using 1200 watts.............

Since I'll be using a Peavey ipr2 7500 for two temporarily...............I need a ski slope downhill from 10hz! Guess I'll be using all reserve power...........or be buying more drivers........ie. can you say bottoms out? biggrin.gif


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post #17 of 77 Old 01-28-2014, 06:42 PM - Thread Starter
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I put this into the webISD and seems like i really should be building a 14.25 cu ft ported box, no?
Just kidding, I don't have the space.


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post #18 of 77 Old 01-28-2014, 07:29 PM
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If you are 95% music you should care much more about max output at 70hz instead of 10hz. I think a massive ported box is not the right end result. You might even prefer the previously released 18 HO dayton driver for a few more dB in the kick drum wheelhouse. I'd consider sealed boxes with the HO driver for 95% music.

"Without subs it's just background music - with subs it's the main event!"

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post #19 of 77 Old 01-28-2014, 07:32 PM - Thread Starter
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Agreed. I can't wait to get these drivers in!


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post #20 of 77 Old 01-29-2014, 05:56 AM
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Quote:
double> You sub modelers need to unionize!

This is what Scotty came up with using 1200 watts.............

Lol, I bet you’re wondering. I see what's going on. I have mine in a 4cf enclosure single driver (no dsp) and he has his sim in a 8cf enclosure dual drivers. It’s against our union contract to check each others work though. smile.gifwink.gif

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post #21 of 77 Old 03-06-2014, 06:52 AM
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If one was to build a dual driver setup in a single cabinet. Do you simply double the volume used for a single driver?
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post #22 of 77 Old 03-06-2014, 04:20 PM
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If you want to keep the same response. If you were to put two UM drivers in 6cf it would only be a difference of basically 1dB from 30hz down which you could address with dsp if needed.

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post #23 of 77 Old 03-06-2014, 05:24 PM
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jhgkak,

I'm looking forward to watching this thread. The cabinetry looks great already, so it will be fun to watch things progress. Good luck with your build.

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post #24 of 77 Old 03-06-2014, 05:43 PM
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Steve NN,   thank you.

 

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post #25 of 77 Old 05-31-2014, 09:55 AM - Thread Starter
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Had the cabinets built. Really disappointing on the release date getting pushed again. Any ideas for another driver that would fit a 17" cutout?
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post #26 of 77 Old 05-31-2014, 10:43 AM
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Stereo Integrity HT 18" will fit ! (they require 16,70")
$100 less expensive each, sans the shipping.... I've got 2, ordered two more.... Get them (pre order for July)
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post #27 of 77 Old 05-31-2014, 09:33 PM
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Stereo Integrity HT 18" will fit ! (they require 16,70")
$100 less expensive each, sans the shipping.... I've got 2, ordered two more.... Get them (pre order for July)

Are the SI 18's going to be available before the UM18-22's?
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post #28 of 77 Old 05-31-2014, 09:38 PM
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SI website states first weeks of July...
Most of their items are made by themselves, some made to order. Not in a far far away factory...
So I trust them when they call a date, they know how their inventory moves, I think.
I have also placed a pre-order so I do also hope my subs will ship early July :-)

As for the UM, great subs, I have an Ultimax 15 also... but just not sure when I'll se an UM 18.....

Best of luck buddy !
(ps Some guys here are selling SI HT 18's)
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post #29 of 77 Old 05-31-2014, 10:04 PM
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SI website states first weeks of July...
Most of their items are made by themselves, some made to order. Not in a far far away factory...
So I trust them when they call a date, they know how their inventory moves, I think.
I have also placed a pre-order so I do also hope my subs will ship early July :-)

As for the UM, great subs,mI have an Ultimax 15 also... but just not sure when I'll se an UM 18.....

Best of luck buddy !
(ps Some guys here are selling SI HT 18's)

My understanding is that Nick doesn't do any assembling for the SI 18's, they come in from the factory ready to go out to the customers. That's also the reason he's able to sell them for so cheap.
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post #30 of 77 Old 05-31-2014, 10:13 PM
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My understanding is that Nick doesn't do any assembling for the SI 18's, they come in from the factory ready to go out to the customers. That's also the reason he's able to sell them for so cheap.
ah yes, says on the box where they are made 😁 well, let's hope his suppliers are reliable hehe
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