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Old 13th January 2019, 05:03 AM   #341
planet10 is offline planet10  Canada
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Alpair 7P & Alpair 12PW combination.
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since the 12pw seems to have a decent range
I think it is a better fr than the A12p. Response to about 10k. Give yourself 2 octaves that means anything up to about 2.5k.

dave
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Old 11th June 2019, 06:54 PM   #342
toobhed is offline toobhed  United States
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Default a simple two way A12bw + A7p

...almost ready....
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Old 11th June 2019, 06:58 PM   #343
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Nice veneer on the front.

dave
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Old 11th June 2019, 07:51 PM   #344
toobhed is offline toobhed  United States
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Default a simple two way A12bw + A7p

Thanks Dave, for description and pics of completed cabs see:

"a simple 2-way: Alpair12pw + AlpairEn7p
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Old 26th April 2020, 11:19 PM   #345
Xaborus is offline Xaborus  United States
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Hey guys!

I was thinking about trying the 12PW fullrange, in 3 ft^3 @ 23hz (-6dB Extended Bass Shelf). Xmax is completely fine down to 10hz at 3.5W/ 93dB @ 100hz in Box Sims. I was planning to use this with a 3.5 watt SET amp, so it works out perfectly!

20hz Xmax is exceeded @ 12.4 watts... but any rogue sub 20hz frequencies will probably destroy the thing, with cone travel up to 16mm at 10hz.

-3dB @ 60hz
-6dB @ 23hz!!
-9dB @ 20hz!

Enclosure dimensions would be 24" high, 18" wide, and 12" deep. Similar dimensions/look to the JBL L100 Classic, for that "retro" look.

What do you guys think?
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Old 26th April 2020, 11:56 PM   #346
planet10 is offline planet10  Canada
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Originally Posted by Xaborus View Post
in 3 ft^3 @ 23hz (-6dB Extended Bass Shelf). Xmax is completely fine down to 10hz at 3.5W/ 93dB @ 100hz in Box Sims.
I am not a big fan of that kind of alignment. Something that came about with drivers that canít actualy di decent bass. Scott's ML-TL get simialr extension (and i expect smaller)

And unles syou use 2, the sensitivity will not exceed the 87-88 dB 1w figure. And given that it is extended bass shelf something less than that (typicaly 3-6 dB less).

dave
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Old 30th September 2020, 03:11 PM   #347
simplesteve is offline simplesteve  United Kingdom
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Alpair 7P & Alpair 12PW combination.
How much do I need to adjust either the front-to-back dimension or the height to compensate for an internal baffle with approx 50% holes, and if front-to-back, what does that do to the upper section - I assume no baffle is needed there ?

Sorry if this is basic stuff, but I'm a basic beginner with no idea...!
Thanks for any help - its appreciated.

Last edited by simplesteve; 30th September 2020 at 03:23 PM.
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Old 30th September 2020, 05:46 PM   #348
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When i add a brace with ~⅓ holes i increase the dimensions across the 2 outer panels that are parallel to the brace by ⅔ the width of the bracing material.

dave
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Old 30th September 2020, 08:26 PM   #349
simplesteve is offline simplesteve  United Kingdom
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Great, thank you Dave !

Last edited by simplesteve; 30th September 2020 at 08:30 PM.
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Old 1st October 2020, 02:39 AM   #350
planet10 is offline planet10  Canada
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Join Date: Oct 2001
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Just so you know, this brace also complies with the rule: The aspect ratio of the subpanels should be greater than that of the panel being braced. And the 2 subpanels should have different aspect ratios (ie place the brace off-centre).

Click the image to open in full size.

dave
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