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Old 24th September 2012, 06:03 PM   #11
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Join Date: Aug 2011
Thanks, that's what I want.
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Old 24th September 2012, 07:10 PM   #12
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Join Date: Jun 2012
Good luck, can't wait to see your build
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Old 25th September 2012, 08:08 AM   #13
Ile is offline Ile  Finland
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Join Date: Sep 2011
Location: Jyväskylä
Not optimal IB driver (small, low excursion and low Qts), but if you already have those go ahead.

Without HP filter xmax is achieved with 15W/driver at 5 Hz. => 104 db/1m

With 2nd order HP filter at 10 Hz xmax is achieved with 60W/driver at 5 Hz. => 110 db/1m
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Old 25th September 2012, 08:32 AM   #14
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I don't want to go below 20 Hz because I will not be using them for home theater. What would be an optimal driver?
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Old 25th September 2012, 11:29 AM   #15
Ile is offline Ile  Finland
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Join Date: Sep 2011
Location: Jyväskylä
In Europe it's hard to find IB drivers, but in US is better choises.

Fi IB3 Series Sub Woofers | Fi IB3 Subwoofer

http://www.parts-express.com/pe/showdetl.cfm?partnumber=295-455

Not sure about availability
http://www.aespeakers.com/drivers.php?driver_id=8

Two new drivers, but not much info about these in IB yet.
http://stereointegrity.com/index.php?id=60
http://obsidiancaraudio.com/index.php?id=6

Higher budget.
TC Sounds LMS Ultra 5400 18" DVC Subwoofer 293-666
iST Ltd.
Speaker Building Supplies from Madisound

Here's few photos of my IB project with two Fi IB318.

Last edited by Ile; 25th September 2012 at 11:40 AM.
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Old 25th September 2012, 12:34 PM   #16
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Join Date: Jun 2012
Default But......

Quote:
18" void under my house

Me thinks the driver will see a small volume, although large lounge. Also, not wanting movies to be played through the system extreme xmax shouldn't be that critical! I never had the luxury of buying to suit the numbers. I bought what I could afford and stuck a driver in the loft. Sounds good to me, but if you can afford the gear and shipping, yes FLI drivers are more like it. I even experimented with a really budget £30 driver just to experience how it sounded. I cut a piece of ceiling out knowing full well I could put it back and filler the cut, re-patched floorboards are hidden under a carpet.

Mike
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Old 25th September 2012, 12:39 PM   #17
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Join Date: Aug 2011
Thank you for those, I am in the States often so it's something to think about. I'll probably stick with what I have for now and upgrade in the future.
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Old 25th September 2012, 12:43 PM   #18
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Join Date: Jun 2012
Default :)

Best way to do it. Specs might differ, but usually diameter stays the same, so its just a question of swapping.

Mike
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Old 25th September 2012, 01:31 PM   #19
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The Fi IB drivers look interesting but the shipping will be huge, maybe I can bring them back one at a time as luggage. Patching and modifying holes is no problem at all.
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Old 25th September 2012, 02:34 PM   #20
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Join Date: Dec 2008
Location: Knoxville, TN
I've seen a couple of this type build, like weaponizing a house. This build uses 4 x 18" drivers that look like laundry baskets. Almost 2" x-max. I might just get one of these drivers to hang on my wall and scare folks.

Under floor IB project using 54mm xmax drivers x4

Click the image to open in full size.
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