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Old 14th February 2013, 09:03 PM   #1
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I have Magenpalanr 20's. Pretty happy except no response below 30Hz in my 20' X 15' X 9' rectangular room that empties into a hallway

I have read most of the posts but much is beyond my technical understanding.

I do have a friend who builds commercial cabinets, furniture, etc. He has CMC machines, tools, saws, software to calculate volume in an enclosure (seems useful), etc and the ability to build anything. aNd people who will do it.

I/we can follow directions. Cost, with in reason, not an issue - $500-1000 for components, etc would be doable. More perhaps.

Enclosure cost would be nominal presuming wood/plywood/MDF.

Labor cost not an issue

Would like to keep size reasonable - say not more than 2'x2'X2' - or equivalent - ie not 5' feet tall, for example. Speaker can go in corner or out 3-4 feet from corners

So is there a kit/kit design/project that might meet my specifications? Has someone already done this?

Goal is to enhance the Maggies at the extreme low end only - not necessarily replace the bass of the Maggies (with which I am happy except for the absence of about 30-> 20 Hz or thereabouts) - jsut some extreme low end augmentation without screwing things up

Thanks for suggestions
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Old 14th February 2013, 09:11 PM   #2
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If you don't want to get technical, a kit is probably the way to go.

Subwoofer System Kits in the Speaker Components Department at Parts Express | 287

Or you could build the box yourself using the same volume in a shape and finish that is to your liking.
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Old 14th February 2013, 09:36 PM   #3
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A pair of those new 18"ers, plus suitable amplification and eq would probably fit the bill nicely.

Might be a little overkill, but would get the job done without trying.

I'd still advise crossing over the Maggies. That way, you're not running them into distortion by shoving frequencies in that they can't play.
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Old 14th February 2013, 09:46 PM   #4
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I am really just looking for a "solution."

If it is complex to build, that would be ok

Kits are OK but if someone has a better solution of

1) this driver
2) this size/type/design box of these dimensions with this bracing
driven by
3) this amp and xover

That would be fine

Ie, a "Project" someone has already worked out that I am just copying.

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Old 15th February 2013, 06:42 AM   #5
GM is offline GM  United States
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Probably best to chat up these folks then: Planars & Exotics - diyAudio

Loud is Beautiful if it's Clean! As always though, the usual disclaimers apply to this post's contents.
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Old 15th February 2013, 02:44 PM   #6
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If you are pursuing this project, state the country you are in (flag) as that will have some effect in the final choice of drivers/price...
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Old 15th February 2013, 02:56 PM   #7
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Also for some positive ideas look at the DIY section here.
DIY Peerless XLS 12" ported 85L - Home Theater Forum and Systems -
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Old 15th February 2013, 10:33 PM   #8
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