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Old 9th October 2013, 06:52 PM   #1
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Default Sealed Enclosure for A7.3

Hi, I'm after plans for building sealed enclosures for the Alpair 7.3 to be used as the 5 in a 5.1 HT setup.

I've had a good trawl through the site and found some nice bits of info, however being new to this game, I wouldn't know how to use half of it... An existing design would be ideal.

Had a look on frugal-file, the mMars for A7 appears to fit the bill. Is this plan-set relevant to the 7.3 and available?

Thanks,

Paul
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Old 9th October 2013, 07:12 PM   #2
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Quote:
Originally Posted by BuildMeSomething View Post
Had a look on frugal-file, the mMars for A7 appear to fit the bill. Is this plan-set relevant to the 7.3 and available?
Same box as mMarS for CHR70 but modified to fit the A7.x

dave
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Old 9th October 2013, 07:58 PM   #3
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Thank you Dave

Are the plans on frugal-file the complete set, or do I need to purchase them?

Last bit, is there a recommended [roughly speaking] XO point for the mMarS. Though my HT amp does a full auto speaker setup & EQ it might be better to set this point manually. IIRC, 40, 60, 80, 100 & 120Hz are available.

Paul.
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Old 9th October 2013, 08:27 PM   #4
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mMarS for CHR is freely downloadable. Rebate & driver brace need adjusting.

dave
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Old 9th October 2013, 08:40 PM   #5
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OK, thank you

Paul.
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Old 16th December 2013, 10:30 PM   #6
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Quick question... I have enough 18mm B/B plywood left over to build 1 pair of the mMarS. Any reason not to use 18mm through out... or 18mm on baffle only and 15mm else where?

Paul
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Old 16th December 2013, 10:47 PM   #7
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No resaon to not use 18mm

dave
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Old 16th December 2013, 11:04 PM   #8
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Old 16th February 2014, 10:01 AM   #9
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OK... 90% cut, just the internal braces to trim & make holey

Cut the front baffles to flush mount the A7.3. Material thickness behind the driver is 9mm, is it worth chamfering the back edge of the cut out?

Paul
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Old 16th February 2014, 07:08 PM   #10
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Quote:
Originally Posted by BuildMeSomething View Post
OK... 90% cut, just the internal braces to trim & make holey

Cut the front baffles to flush mount the A7.3. Material thickness behind the driver is 9mm, is it worth chamfering the back edge of the cut out?

Paul
For the 7cm series (7.3, CHR, etc) I'd say yes, with the 10's I'll confess to not chamfering the backside of my last 3 builds, with no discernable detriment ( at least with my hearing and raging tinnitus)
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