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post #1 of 37 Old 07-16-2014, 07:47 AM - Thread Starter
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potential DIY build vs. SVS?

So basically here's my plan:

two of these:
http://www.parts-express.com/dayton-...4-ohm--295-468

one of these:
http://www.parts-express.com/art-cle...erter--245-868

and one of these:
http://www.parts-express.com/crown-x...ifier--245-502


If that is more or less ridiculous I might could be talked into downsizing and saving $225,

two of these:
http://www.parts-express.com/dayton-...4-ohm--295-456

and one of these:
http://www.parts-express.com/crown-x...ifier--245-500


I know the Behringer iNuke 3000 is popular around here but I used to be in a band and know that all the cheap crap that didn't last or didn't do what it said it would was Behringer, so I'm skeptical. It is my understanding that their published power isn't RMS, which reminds me of the old Pyramid crap for car stereos in the early 90's, basically a 1,000 watt amp that is smaller than a head unit and whatnot. On a good day realistically you'd get 14 watts rms maybe. I could be talked into it but I don't have a good feeling that the amp will say it will do what it says, but the DSP sounds really cool.

Anyway, this will be paired up with a typical 7.2 receiver and surround speakers, in a 15x20 room with 9' ceilings, either under the TV, or more likely behind my seats as I have 4' of clearance from them to the wall.

Please comment as to whether this is dumb or will be awesome. The alternative is to go with two SVS PB-2000's. I know how to build good boxes, I have had stuff published in a car audio magazine and have built a Gallien Krueger Neo 412 clone out of baltic birch before. I know it takes forever and costs more than you think to do it right too.

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post #2 of 37 Old 07-16-2014, 08:03 AM
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inuke specs do give you rms and peak values in the manual. Yes the name "inuke 3000" is in reference to peak power output of a 4 ohm bridge or 2 ohm stereo. It's been measured and the published RMS of 2080 watts is accurate. http://www.diyaudio.com/forums/class...surements.html That crown's published specs are no better than how Behringer does it, it's giving you power output at 1 khz, which is completely useless. And it doesn't even say if it's giving you RMS or peak.

Either way, you need the DSP. An alternative is a minidsp that's 120 bucks. You don't need a cleanbox with the inukes, they can be powered off any consumer gear. The cleanboxes are also garbage they roll off early without a modification.

I wouldn't look at 15" subs, the value is in 18" subs. Two SI 18 D4's, wired in parallel for a 2 ohm load each, off an inuke 3000dsp in stereo is by far the best value you can get. They're only 165 + shipping right now. The inuke can give enough power that it can trip your circuit breakers, so don't worry about that.


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post #3 of 37 Old 07-16-2014, 08:48 AM - Thread Starter
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Quote:
Originally Posted by Bassment View Post
I wouldn't look at 15" subs, the value is in 18" subs. Two SI 18 D4's, wired in parallel for a 2 ohm load each, off an inuke 3000dsp in stereo is by far the best value you can get. They're only 165 + shipping right now. The inuke can give enough power that it can trip your circuit breakers, so don't worry about that.
The enclosure specs on those looks more realistic, ported is 5-6 cubic feet even at 20 hz with an 18. The Dayton 15's are recommended to have 9 cubic feet which seems kind of ridiculous especially since the SI 15's are almost half that. 14mm of travel with a 15 vs. 22.5mm on an 18' too... hmmmm.....
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post #4 of 37 Old 07-16-2014, 08:54 AM
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Yup, SI 18's have about double the displacement of the Dayton's, which is a lot.


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post #5 of 37 Old 07-16-2014, 08:56 AM
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Quote:
Originally Posted by corndogggy View Post
The enclosure specs on those looks more realistic, ported is 5-6 cubic feet even at 20 hz with an 18. The Dayton 15's are recommended to have 9 cubic feet which seems kind of ridiculous especially since the SI 15's are almost half that. 14mm of travel with a 15 vs. 22.5mm on an 18' too... hmmmm.....
Just curious in your DIY options above you first show 15" subs and then in your second option posted a link to 8" subs?
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post #6 of 37 Old 07-16-2014, 09:02 AM - Thread Starter
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I was questioning even my choice of 15's, figured anything beyond a 12 was kind of getting into the sloppy zone. Ideally I'd like to have true subwoofers though and not just a bookshelf system where the sub grabs anything below 150 hz. I like a ton of mid bass from kick drums up front so I plan to get some larger towers, hope to only have the super low frequencies on the subs.
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post #7 of 37 Old 07-16-2014, 09:04 AM - Thread Starter
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Originally Posted by BrutalBodyShots View Post
Just curious in your DIY options above you first show 15" subs and then in your second option posted a link to 8" subs?
Eh, I meant to post to the 12's of the same kind. Grabbed the wrong link I guess. Below is what I was looking at. However these Stereo Integrity drivers sound like a better choice due to the smaller enclosure requirements if nothing else.

http://www.parts-express.com/dayton-...4-ohm--295-464
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post #8 of 37 Old 07-16-2014, 09:06 AM - Thread Starter
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Originally Posted by Bassment View Post
Yup, SI 18's have about double the displacement of the Dayton's, which is a lot.
Wonder how many people would laugh at two 18's powered by 2,000 watts in a 2,700 cubic foot room?
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post #9 of 37 Old 07-16-2014, 09:11 AM - Thread Starter
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$162x2 subs + $279 for the iNuke amp = $603 plus box/wires/terminals/ports/etc. May not be bad. The only other factory choice I've seen that sounds reasonable is $1,500 for two SVS PB-2000's but this solution would likely kill those. Not sure how to cover it though, black paint or find some black veneer somewhere maybe.
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post #10 of 37 Old 07-16-2014, 10:18 AM
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Quote:
Originally Posted by corndogggy View Post
Ideally I'd like to have true subwoofers though where the sub grabs anything below 150 hz. I like a ton of mid bass from kick drums up front.
My system has a lot of mid-bass kick <300hz and also bass to single digits.
My LMS-18's are the fastest/cleanest overall driver I've ever owned. Far better than Dayton HO/UM's, SI-18's, or Velodyne servos.



Is it quick enough?

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post #11 of 37 Old 07-16-2014, 10:19 AM
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post #12 of 37 Old 07-16-2014, 10:29 AM - Thread Starter
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My LMS-18's are the fastest/cleanest overall driver I've ever owned.
At 86 pounds and $925 each I should hope so.

http://www.parts-express.com/tc-soun...oofer--293-666
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post #13 of 37 Old 07-16-2014, 02:43 PM - Thread Starter
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Why does the SI 18's show them as a preorder at $162, with them coming in at the end of the month, when people were talking about this two years ago? Does anybody actually own these things?

Stereo Integrity's new HT Subwoofer
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post #14 of 37 Old 07-16-2014, 02:59 PM
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Quote:
Originally Posted by corndogggy View Post
Why does the SI 18's show them as a preorder at $162, with them coming in at the end of the month, when people were talking about this two years ago? Does anybody actually own these things?

Stereo Integrity's new HT Subwoofer
There are dozens of happy SI-18 owners on this forum. I think the pre-order is just because they aren't available now, so you simply lock in your ability to receive the product when it is available (late July last I heard). If you don't pre-order I would say you risk missing out if all that comes in stock to SI at the end of the month is already called for from pre-orders; you'd be sitting in the out of stock boat again for who knows how long.
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post #15 of 37 Old 07-16-2014, 03:00 PM
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Originally Posted by corndogggy View Post
Wonder how many people would laugh at two 18's powered by 2,000 watts in a 2,700 cubic foot room?
You'd be surprised how many on this forum have that or even more in that size space.

I'm planning on two UXL-18's with roughly 2k watts apiece in a 2400 cubic foot room so I'm right there with you.
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post #16 of 37 Old 07-16-2014, 04:18 PM - Thread Starter
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Alright, I'm confused, I'm cool with the two SI 18's and the iNuke 3000, but the thread below says you need a separate DSP per box. Well, people also say to separate your drivers and spread them out. I can't do both. Either they'll be next to each other or I'll have one DSP running two boxes. How are these two ideas compatible?

Help with first DIY: DO SI 18
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You buy inuke3000dsp
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post #18 of 37 Old 07-16-2014, 04:27 PM - Thread Starter
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You buy inuke3000dsp
If I need a dsp per box, wouldn't I need two iNuke's? Or can the DSP control two channels separately? Or am I totally not understanding that statement?
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Originally Posted by corndogggy View Post
If I need a dsp per box, wouldn't I need two iNuke's? Or can the DSP control two channels separately? Or am I totally not understanding that statement?
one amp, can control two sub's separately.
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post #20 of 37 Old 07-16-2014, 04:52 PM
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Originally Posted by BrutalBodyShots View Post
You'd be surprised how many on this forum have that or even more in that size space.

I'm planning on two UXL-18's with roughly 2k watts apiece in a 2400 cubic foot room so I'm right there with you.

Just wait until you build them.... you'll want more.

I have a 1700 cubic foot room. I started with 2 18s and thought it was overkill as I was building them. Long story short, now I'm at 2 18's and 2 15's...
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Originally Posted by BrutalBodyShots View Post
You'd be surprised how many on this forum have that or even more in that size space.

I'm planning on two UXL-18's with roughly 2k watts apiece in a 2400 cubic foot room so I'm right there with you.
I know that I'm running I have more then that and in an even smaller space!...lol
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post #22 of 37 Old 07-17-2014, 07:33 AM - Thread Starter
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So honestly and realistically speaking, if I can build my own, the SI 18's and iNuke solution is superior to the SVS PB-2000 alternative? I have no way of hearing this or any other similar setup, kind of flying blind here.
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Originally Posted by corndogggy View Post
So honestly and realistically speaking, if I can build my own, the SI 18's and iNuke solution is superior to the SVS PB-2000 alternative? I have no way of hearing this or any other similar setup, kind of flying blind here.
yes, it destroys it.


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So honestly and realistically speaking, if I can build my own, the SI 18's and iNuke solution is superior to the SVS PB-2000 alternative? I have no way of hearing this or any other similar setup, kind of flying blind here.
If you're talking a ported cab for the 18, yes it would smoke the PB-2000. If you're talking sealed, output probably would probably be +/- 1-2db so not all too significant.
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I tried to call the company, no answer. I am assuming somebody here could help me with box/port size and tuning it? The website only says 5-6 cubic feet tuned to 20 Hz. I don't have any software to figure that out but I guess I could crack open my old Speaker Design Cookbook.


And I thought two of these 18's were an obnoxious idea... apparently somebody here has sixteen of the things powered by 18,000 watts.

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If you're talking a ported cab for the 18, yes it would smoke the PB-2000. If you're talking sealed, output probably would probably be +/- 1-2db so not all too significant.
I can't seem to find anybody who has built these things in a ported enclosure, it is always sealed. Looks like if you had a 5 cubic foot box and 4" port, it needs to be 14" long to hit 20 hz. I don't know if that is the perfect idea or if 6 cubic feet or larger/smaller port diameters will work better. Seems like if it was common this should be an easy thing to find out.

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I tried to call the company, no answer.
Are you trying to call Stereo Integrity? I've never had any luck getting an actual person on the phone there. You are better off sending an email. Nick was pretty quick to respond when I did that.

Quote:
Originally Posted by corndogggy View Post
I can't seem to find anybody who has built these things in a ported enclosure, it is always sealed.

About two months ago, ported MartyCubes with SI 18's were a huge fad around here. If you look far back enough, you'll find plenty of examples. They were 5.3 cuft IIRC.

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post #28 of 37 Old 07-17-2014, 05:44 PM
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Does anybody actually own these things?
No... because popalock keeps buying them all!

(Give the rest of us a chance! )

He has to upgrade to 36kW now... so that should slow him down, some...

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post #29 of 37 Old 07-17-2014, 10:09 PM
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potential DIY build vs. SVS?

Quote:
Originally Posted by corndogggy View Post
Wonder how many people would laugh at two 18's powered by 2,000 watts in a 2,700 cubic foot room?

I have 5 ribbon tweeters, 10 zaph midranges, 20 eight inch woofers, 8 twelve inch woofers and two 18 inch subs (easy button diy found on this forum) with one ep4000 briged on each sub and one channel of each other ep4000's powering the speakers and woofers in a 5.1.

The bass is thunderous and I can move the foundation in my house.....and the neighbors lol.

It is balanced and amazing to experience.
A total of 20,000 watts.

My room is 14x22.

Jeff

Whether you think you can or think you can't...you're correct!
Henry Ford

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post #30 of 37 Old 07-18-2014, 04:26 AM
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Quote:
Originally Posted by corndogggy View Post
I can't seem to find anybody who has built these things in a ported enclosure, it is always sealed. Looks like if you had a 5 cubic foot box and 4" port, it needs to be 14" long to hit 20 hz. I don't know if that is the perfect idea or if 6 cubic feet or larger/smaller port diameters will work better. Seems like if it was common this should be an easy thing to find out.

Plenty of folks have built these in ported enclosures. Both the SI 18HT and the Dayton HO18 are awesome in a ported enclosure, so much better than sealed, unless you have multiple 18" LMS-Ulras or UXL-18's along with gobs of power.

Do a search for the tread that I started called the Large Ported Enclosures for Dayton HO18's, or something similar. Lots of ported SI 18's in the various Marty Subs!
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