Greg Monfort ML-TL Design Update for Alpair 10.2 - Page 2 - diyAudio
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Old 16th February 2013, 08:44 PM   #11
xrk971 is online now xrk971  United States
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Quote:
Originally Posted by planet10 View Post
Perhaps not a good example.

Click the image to open in full size.

dave
I never knew it would sim so poorly - is it lack of stuffing? Anyhow, I was trying to point out that there are thin 4 in designs around. It's tough to beat rectangular csa MLTL for a smooth response. Do you think the MJK sim would break down if aspect ratio became very flat? Well, at some point you run out of depth for driver magnet, so practical limit is like 3 in.
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Old 16th February 2013, 09:02 PM   #12
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Originally Posted by xrk971 View Post
I never knew it would sim so poorly - is it lack of stuffing?
It is an example of classic TL design.

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Old 13th July 2013, 06:10 AM   #13
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Default Greg Monfort's MLTL Ver. 10.3 / 10P

In the spirit of GM, GREETS!
I never got my hands on a pair of Alpair 10's before they disappeared.
I do however have a pair of the new 10.3 metal cone and 10p paper cones.
I'm still interested in Greg's mltl design for the alpair 10's (either flavor) due to the higher driver position off of floor and slim proportions.
Would anyone be interested in updating Greg's design for one or both of the new drivers.
Or I am CAD handy myself and would be glad to draw up if someone provides the data.
Not a math cad guy but I can make a mean box.
I'm wrapping up Jim Griffins alpair 6 mltl build, and will be starting Bob Brines alpair 12p build shortly, so looking forward to a Mark Audio hat trick!
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Old 13th July 2013, 09:36 AM   #14
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It should go in & work reasonably as-is, on the basis of a quick look. I think it's better to leave any changes to Greg himself though, since I for one wouldn't have the brass face to interfere with his design.
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Old 13th July 2013, 03:18 PM   #15
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Greets!

As Scott noted, the cab is acoustically large enough and the various driver’s specs close enough that any of these will work well enough in the existing alignment, but with the 10.3, the bass will be rolled off a bit more than with the 10.2 or you can increase the WxD to 7.56” x 4.625” i.d. to maintain the original’s aspect ratio and get a bit more bass than the 10.2 in the existing design while maintaining the ~ same roll off Q.

To get ~ the same roll off Q with the 10P.1, a 9.5” x 5.875” i.d. WxD is desirable along with shortening the vent to baffle thickness.

Hopefully, Dave p10 will make some new drawings from the existing one since just a few dims need changing.

Being a ‘BIB’ kind of guy, hope you build to the larger dims to compare to the other designs and report back here with them.

GM
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Old 14th July 2013, 02:49 AM   #16
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So exciting watching the next wave of drivers inspiring both new designs and revisions of proven boxen.

I am a few months away from getting a pair of 10.3s but when I do I am thinking of taking a "no holds barred" approach. There is a design that I have in mind that I think the A10 family really deserves. So much so that I might be willing to "donate" a respectable sum of money to have it professionally designed. Hoping the usual suspects might be interested in my idea.
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Old 14th July 2013, 03:16 AM   #17
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Greg, Thank you so much for the updates to your design!!!
I will build one or both with the new dimensions and report back.
Looking forward to others' build logs and experiences too.

Has anyone heard any feedback on the Alpair 10.3 yet? Hoping it closes the gap with 7.3.
Scott, thx for your thoughts on the new 10P.
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Old 14th July 2013, 02:56 PM   #18
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You're welcome! Looking forward to how it all pans out.

GM
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Old 15th July 2013, 10:20 AM   #19
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Quote:
Originally Posted by cogitech View Post
So exciting watching the next wave of drivers inspiring both new designs and revisions of proven boxen.

I am a few months away from getting a pair of 10.3s but when I do I am thinking of taking a "no holds barred" approach. There is a design that I have in mind that I think the A10 family really deserves. So much so that I might be willing to "donate" a respectable sum of money to have it professionally designed. Hoping the usual suspects might be interested in my idea.
What's your idea?
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Old 15th July 2013, 10:51 AM   #20
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I'll look forward to seeing some pictures of the finished build.

New units are always nice to see. I have a pair of 10.3s here -thus far, it seems to be a solid unit with more HF extension than the 10.2 so I suspect people will find it closer in character to the smaller driver.

Last edited by Scottmoose; 15th July 2013 at 10:58 AM.
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