Subwoofer for jbl 2235H? - diyAudio
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Old 29th June 2012, 05:32 PM   #1
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Location: Sweden
Default Subwoofer for jbl 2235H?

I have just bought 4 JBL 2235H and I wish to make 2 genuine subwoofers.
The subs will be fed by JBL 6290.

I am using JBL 4425 as top.

Please give me some advice for a DIY subwoofer.

Your advice will be appreciated!

Niklas from Sweden
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Old 30th June 2012, 09:20 AM   #2
neskor is offline neskor  Serbia
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Maybe JBL B380?
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Old 30th June 2012, 12:45 PM   #3
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Hi Neskor,
Thanks for your tip. Never heard of this model before. It look simple in its construction. Do you know where to find (if possible) the construction drawings/messurements?

Once again thanks!

Ps. Maybe there is other boxes which allows even deeper bass than 25Hz?...
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Old 2nd July 2012, 09:38 AM   #4
neskor is offline neskor  Serbia
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Click the image to open in full size.
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Old 2nd July 2012, 07:02 PM   #5
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Thanks Neskor!

Maybe this is a stupid question but does it matter if the 2235H is not mounted on the exact position as the original? I have all data now but not the position of vent and hole för the speaker.
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Old 2nd July 2012, 07:10 PM   #6
neskor is offline neskor  Serbia
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You don't need strictly accurate position for that.
Just make it similar to this:
Click the image to open in full size.
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Old 2nd July 2012, 07:13 PM   #7
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Great!

By the way is this your speaker? Where would you cut the frequence? I am using jbl4425 as top. Have you listened to the B380?
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Old 2nd July 2012, 07:17 PM   #8
neskor is offline neskor  Serbia
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No this is not mine, but right now I'm making a box for my JBL 2235H
Cabinets are 150L, tuned to 30Hz.
You can use WinISD to check what size of cabinets and ports will suit you.
Cut of frequency will be around 800Hz.
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Old 2nd July 2012, 07:27 PM   #9
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Ok,thanks!Good luck with your own assemble :
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Old 2nd July 2012, 07:45 PM   #10
neskor is offline neskor  Serbia
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I found it, so for future reference:
4" x 9" deep port on vertical center 5" from one end, and woofer, also on vertical center, 9" from the opposite end.
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