El-Pipe-O (El-Pipe-Mino) ??? - diyAudio
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Old 6th October 2003, 08:56 PM   #1
JDeV is offline JDeV  South Africa
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Default El-Pipe-O (El-Pipe-Mino) ???

(Should this now be under "Pass Labs" or "Speakers" )

Anyway. I am very interested in building the small El-Pipe-O with 8" drivers. The only driver I can find locally (from the Farnell agents - Mantech) , is the MCM #55-1195.

1) Will this driver do a good job for this design?
2) Will Aleph30 be able to drive enough to do the job?


Thanx for all.

See WinISD info:
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File Type: jpg mcm-55-1195.jpg (70.8 KB, 1834 views)
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Old 6th October 2003, 11:27 PM   #2
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You might try some 8 inch diameter tubing at a length
which goes to about 6 inches from your ceiling (assuming you
have an ordinary ceiling). I did one with a Vifa 8" and was
very pleased with the result. The curve, of course, will not
resemble yours very much, but it will kick butt.

An Aleph 30 will do the job if the butt to be kicked is
ordinary size.
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Old 7th October 2003, 08:23 AM   #3
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The Qts is in the right ballpark. Now that Rick Shultz's alphaTL article is out in AudioXpress (and hopefully soon on my web site) you can just plug the numbers into his scheme and end up with an optimum El Pipe-o... a little late for me to run the numbers but i could maybe do it tomorrow.

dave
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Old 17th November 2003, 05:52 PM   #4
JDeV is offline JDeV  South Africa
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Default El-Pipe-Mino progress

I eventually got some 8" drivers and my pipes. Build them this morning but not enough time to test, work afternoon shift. The 2 drivers which I am going to test are:

................................P..Qts..Vas..fs
1) MCM 55-1190... 70W 0.54 2.3 31Hz
2) MCM 55-1240... 45 0.74 2.2 37

For 1) my pipe length must be 2.4m and for 2) about 2m. The 2.4m is abit high for my ceiling, so will use 2m in both cases. Will have to listen to results for an opinion if this will work good enough. I used a 8" paper pipe and bobben (spool) used for stitching wire on book press. The pipe fit just snuggly into bobben and the bobben's side end, acts as a good stable foot for the pipe.

Here are some pics for now:
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File Type: jpg pipe-o.jpg (42.7 KB, 1491 views)
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Old 17th November 2003, 05:54 PM   #5
JDeV is offline JDeV  South Africa
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Inside:
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File Type: jpg pipe-o-inside.jpg (74.7 KB, 1376 views)
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Old 17th November 2003, 05:56 PM   #6
JDeV is offline JDeV  South Africa
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Side view - tilted side view
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File Type: jpg pipe-o-side.jpg (67.7 KB, 1384 views)
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Old 17th November 2003, 07:31 PM   #7
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Looks to me like they can treat any constipation problems
you might have.
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Old 17th November 2003, 11:19 PM   #8
JDeV is offline JDeV  South Africa
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Thanx for the inspiration Mr Pass - it is either this or a kick in the butt - at the end constipation problems will be treated

About stuffing:
How much of what for this size pipe - 6.6ft x 8"
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Old 18th November 2003, 03:26 AM   #9
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Quote:
Originally posted by JDeV
About stuffing: How much of what for this size pipe - 6.6ft x 8"
Stuff to taste.
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Old 27th November 2003, 09:48 PM   #10
Bakmeel is offline Bakmeel  Netherlands
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I am starting the same venture, this one will be mono, and with a nice vintage woofer by KEF, B200.

Should kick butt medium-size...

*** Edit ***

This is actually not me, but my dear friend Merijn Posting on my computer.... You should have logged in on your account, Merijn
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