8x sealed Incriminator Audio Judge 21" build - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 612 Old 02-19-2016, 04:24 PM - Thread Starter
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8x sealed Incriminator Audio Judge 21" build

These Incriminator Audio Judge drivers have a custom suspension and had additional mass added (3 dust caps) to lower the Fs from the stock 34hz to 26hz.

The eight drivers are going in large dual-opposed boxes that are 24” wide, 22.5” tall, and 55” long (3" thick baffles). That’s roughly 13.4cu.ft before drivers and bracing. Stuffed in each cabinet is 6 pillows.


I used 3/4” MDF and quadrupled the baffles. Securing the drivers to the cabinets are 1.75” stainless steel #10 wood screws. I could have used bracing that would consume less internal volume, but for this build I chose a simpler/faster approach.


The two drivers in each cabinet are each DVC (1.5ohm per coil) with the coils wired in series and then the two drivers are paralleled, and then two cabinets are wired together in a series. Amplification is provided by a pair of SP2-12000 each on dedicated 240v circuits.


















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Last edited by lukeamdman; 02-15-2017 at 08:46 AM.
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post #2 of 612 Old 02-19-2016, 04:25 PM - Thread Starter
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post #3 of 612 Old 02-19-2016, 04:25 PM - Thread Starter
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post #4 of 612 Old 02-19-2016, 04:26 PM - Thread Starter
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post #5 of 612 Old 02-19-2016, 04:32 PM
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Very nice, looking forward to the finished product. I've heard the IA's at Spring Break Nationals. They have a nice lineup. They make the 20.1 and 40.1 amps if I remember correctly they were great as well. I may be confusing the amps with Sundown, been awhile.
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post #6 of 612 Old 02-19-2016, 04:35 PM
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Ooooo this looks fun! Quadruple baffle is awesome! Looks awesome so far!
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post #7 of 612 Old 02-19-2016, 05:06 PM
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You know ported is better right! . jk

Will these play nice with the othorns? I'm not sure how the phase on tapped horns work.

If there is any ULF to be had in your room, this should do it.
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post #8 of 612 Old 02-19-2016, 05:22 PM - Thread Starter
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Quote:
Originally Posted by evoryder View Post
Very nice, looking forward to the finished product. I've heard the IA's at Spring Break Nationals. They have a nice lineup. They make the 20.1 and 40.1 amps if I remember correctly they were great as well. I may be confusing the amps with Sundown, been awhile.
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Ooooo this looks fun! Quadruple baffle is awesome! Looks awesome so far!
Hi guys, I just updated the first few posts with a bunch of pictures.
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post #9 of 612 Old 02-19-2016, 05:27 PM - Thread Starter
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Quote:
Originally Posted by Samps View Post
You know ported is better right! . jk

Will these play nice with the othorns? I'm not sure how the phase on tapped horns work.

If there is any ULF to be had in your room, this should do it.

They shouldn't be too bad to integrate, but I'll find out tomorrow when I give it a try.


BTW, I just updated the first few posts with a bunch of pictures.
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post #10 of 612 Old 02-19-2016, 05:43 PM
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Nice man!
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post #11 of 612 Old 02-19-2016, 05:58 PM
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I think if it is possible for some person to have too much bass, you are definitely closer to that point than most lol! I thought you were going with 8 Mach5 21ftws....what happened? Did the Othorns eat them?
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post #12 of 612 Old 02-19-2016, 06:47 PM - Thread Starter
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Originally Posted by joebuddyguy View Post
I think if it is possible for some person to have too much bass, you are definitely closer to that point than most lol! I thought you were going with 8 Mach5 21ftws....what happened? Did the Othorns eat them?

Long story short, I had issues with most of the 8 FTW drivers.

I will say that Mark was completely 100% willing to start building and shipping new drivers ASAP no questions asked, but I decided to go another direction and he gave me a full refund. Additionally, the exchange rate for the Canadian dollar had dropped since I originally paid for the invoice, so the refund he issued was around ~$311 short. Within minutes after notifying him of this, he PayPal'd the shortage to me immediately. I certainly can't say anything negative about his customer service!
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post #13 of 612 Old 02-19-2016, 06:56 PM
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Kudos to him, that's outstanding. Still not sure if they'll top 2 g-horns though.
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post #14 of 612 Old 02-19-2016, 07:06 PM
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Kudos to him, that's outstanding. Still not sure if they'll top 2 g-horns though.

Oh, they will....

Blasting brown notes for 10 years and counting!

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post #15 of 612 Old 02-19-2016, 07:15 PM
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Quote:
Originally Posted by lukeamdman View Post

Were the drivers Klippel tested? The stickers on the cones look like what many traditionally use.

Do you have T/S parameters on the drivers? They look very interesting, so I tried researching them, but their website doesn't list T/S data on the 21" Judge, let alone your modified versions.

Thanks
Jim

Speaker Geek
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post #16 of 612 Old 02-19-2016, 07:53 PM
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Now those are some big, big, sealed subs. I might be able to feel the vibrations in Chicagoland, lol.
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post #17 of 612 Old 02-19-2016, 07:58 PM
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Quote:
Originally Posted by lukeamdman View Post
Long story short, I had issues with most of the 8 FTW drivers.

I will say that Mark was completely 100% willing to start building and shipping new drivers ASAP no questions asked, but I decided to go another direction and he gave me a full refund. Additionally, the exchange rate for the Canadian dollar had dropped since I originally paid for the invoice, so the refund he issued was around ~$311 short. Within minutes after notifying him of this, he PayPal'd the shortage to me immediately. I certainly can't say anything negative about his customer service!
That's unfortunate, but kudos to Mark for customer service and standing by his product!



It's hilarious... In my circle of friends and acquaintances people think I'm crazy because I have two large ported uxl18 subs and mains with 15 inch woofers.....ha-ha, if they only knew. At least I'll always have systems like yours that I can use with my wife to rationalize and minimize future bass expenditures, lol! Well met Luke! I can live vicariously through you...ha-ha.

Back to our regularly scheduled programming of you levelling your house with bass...please continue
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post #18 of 612 Old 02-19-2016, 08:00 PM
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I want to see some close mic measurements Glad you finally got some decent drivers.
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post #19 of 612 Old 02-19-2016, 08:03 PM - Thread Starter
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Originally Posted by derrickdj1 View Post
Now those are some big, big, sealed subs. I might be able to feel the vibrations in Chicagoland, lol.

I was going through the numbers the other day and I realized I have over 1 ton of speakers in my HT room...


Each of those sealed cabinets weighs ~300lb's, so each of those stacks with the Othorns on top weighs ~800lb's!
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post #20 of 612 Old 02-19-2016, 08:06 PM
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Go big or go home is an understatement here. haha Nice choice.
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post #21 of 612 Old 02-19-2016, 08:16 PM
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Originally Posted by lukeamdman View Post
I was going through the numbers the other day and I realized I have over 1 ton of speakers in my HT room...


Each of those sealed cabinets weighs ~300lb's, so each of those stacks with the Othorns on top weighs ~800lb's!
Lol, same here. I dread if I have to move.
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post #22 of 612 Old 02-19-2016, 08:30 PM - Thread Starter
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Lol, same here. I dread if I have to move.

After spending a few hours moving these dang things last night I was lamenting just the thought moving out of this house lol.
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post #23 of 612 Old 02-19-2016, 08:45 PM - Thread Starter
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Originally Posted by Jim Walter View Post
Were the drivers Klippel tested? The stickers on the cones look like what many traditionally use.

Do you have T/S parameters on the drivers? They look very interesting, so I tried researching them, but their website doesn't list T/S data on the 21" Judge, let alone your modified versions.

Thanks
Jim

I discussed a lot of the specs with Nick (owner of IA) over the phone but I don't remember most of them. He's going to email them to me and I'll post them.


Here's what I remember:


Fs: 26hz (after break-in)
Re: 3.0 (dual 1.5ohm coils)
BL: 27 Tm
xmax: 28mm
xmech: 45mm

The real limiting factor for excursion is the quad spiders which only allow 39mm in travel each way. Usable excursion is in the mid 30's.

Diameter for the 8 layer flat wire aluminum voice coil (19awg): 3.37"
Winding width: 66mm

Top plate: 30mm
Bottom plate: 16mm

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post #24 of 612 Old 02-19-2016, 09:09 PM
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8x sealed Incriminator Audio Judge 21" build

Standing ovation... Wow dude nice subs and cabinets!!! This is one hell of a sub set up. One day I'll head up your way to get a proper beat down from those subs. Great work and will be watching for the measurements and impressions of them.
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Last edited by eng-399; 02-19-2016 at 09:22 PM.
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post #25 of 612 Old 02-19-2016, 09:11 PM
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Looking good luke.
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post #26 of 612 Old 02-20-2016, 01:16 AM
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@lukeamdman

How much is the Incriminator Audio Judge 21" driver? Looking forward to your listening impression
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post #27 of 612 Old 02-20-2016, 06:45 AM - Thread Starter
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@lukeamdman

how much is the incriminator audio judge 21" driver? Looking forward to your listening impression
$799
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post #28 of 612 Old 02-20-2016, 07:09 AM
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I am a ported enclosure type of guy and I have 16 12's and two 18's so far and im wondering how im going to have room for all of it haha. And I want two more 18's yet if I can find them.
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post #29 of 612 Old 02-20-2016, 01:07 PM
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Loved scrolling through all the pictures. I guess that is the proper way to decrease room volume.

Any video plans?

Would they be uploaded to this thread?
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_____ _____ _____ _____ _____ _____ _____ _____
Receiver : Denon x5200
Front Stage : Martin Logan Motion 60XTs/Elac Debut F5 Center
Surround Speakers : HTD Level 2 and 3 Towers
Subwooferage : Dual UM-18s/6 SI HT18s
Born in 1995 and still continuing my HT journey
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post #30 of 612 Old 02-20-2016, 01:27 PM
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Can't wait to hear it. Busy tomorrow?
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