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Old 15th January 2010, 03:13 PM   #1
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Default Enclosure design for pair of JBL 2226H

Hey guys, new member here. I can't believe I have never been here before, for how long I have been an audio nut!

Anyway, I am building a high output sub for a sort of unique situation for a customer. He is going to be using it in a very loud audio room in his home, plus he is wants to play along with it, when him and his band buddies get together. Note- he will not be plugging an instrument into it like a bass guitar, just having it playing the song they are playing at the time.

He is a JBL fanatic, so I cannot use anything else, so the 2226H seems to be the choice. It will be 2 of these drivers in one cabinet, ported, not wanting to tune too low, as this will be used for strictly music, primarily kick drum (rock) type bass, and loud. Power will be Crown, approx 800-1200 rms per driver.

Any assistance with the airspace and tuning would be greatly appreciated.
Thanks
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Old 16th January 2010, 03:40 AM   #2
djk is offline djk
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JBL 4508 cabinet, 8 cu ft tuned to 40hz.
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Old 16th January 2010, 07:35 AM   #3
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www.jblpro.com/pub/manuals/enclgde.pdf

Use #10
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Old 16th January 2010, 08:15 AM   #4
Luke is offline Luke  New Zealand
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shouldnt you expect a lower frequency response than 40Hz for 2226H?
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Old 16th January 2010, 09:49 AM   #5
ds23man is offline ds23man  Netherlands
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The 2226 is not the way to go for a subwoofer, wrong Fs. It is a PA speaker!

Regards Gerhard
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Old 16th January 2010, 09:57 AM   #6
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I'd build two 4 cubic foot boxes, rather than one dual 8 footer. Bit neater.
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Old 16th January 2010, 03:39 PM   #7
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You might not want that much power per-driver. The power compression kicks in around 350 or 400w. I'd be looking at 800-1000w for the entire pair.
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Old 16th January 2010, 05:21 PM   #8
Defo is offline Defo  Norway
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Quote:
Originally Posted by ds23man View Post
The 2226 is not the way to go for a subwoofer, wrong Fs. It is a PA speaker!

Regards Gerhard
Pfft, Im using two 2226H in a 100L closed enclosure with a low shelf eq filter, and have good output down to 20hz...

Last edited by Defo; 16th January 2010 at 05:33 PM.
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Old 16th January 2010, 11:45 PM   #9
djk is offline djk
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"Use #10 "

Gee, that's 8 cu ft tuned to 40hz.

Lower tunings are possible, but will handle very little power (remember, cone motion increases at 4x for each octave of bass extension).

This is what 8 cu ft tuned to 40hz gets you:

http://www.jblpro.com/catalog/suppor...pe=3&docid=623
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Old 17th January 2010, 12:45 AM   #10
badman is offline badman  United States
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2242 or 2235 would be better choices. 2226 is a midbass driver. An excellent midbass driver but definitely not a sub except in BIG boxes in a prosound sense
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