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-   -   Chang box plan for Feastrex D5nf (http://www.diyaudio.com/forums/feastrex/200905-chang-box-plan-feastrex-d5nf.html)

Gary the Grey 21st November 2011 01:17 AM

Chang box plan for Feastrex D5nf
 
I printed out a Freddie Chang Single Mouth Moose BVR Horn 1vo box plan for the Feastrex D5nf. The problem is that the the sketch of the finished box shows the driver position a little down from the top. But the box piece plan sketches show the driver right at the top. which is correct?

Thank you for your time.

sippy 21st November 2011 02:45 AM

Hi there,
i'm no authority on this, but i did see somewhere that the driver shouldnt be placed right at the top of the front baffle - it might have been on the frugal website.
I've been reading up a bit about 'speaker desighn just recently and drive units are placed to stop the formation of standing waves, maybe Dave (planet10) would be better qualified to answer.
Haveing said that, most of the single mouth bvr enclosures have the driver placed roughly 1/3rd the ways down the front baffle.

Gary the Grey 21st November 2011 03:32 AM

Thanks Sippy,

That's what I thought. But I'm new to the Feastrex "fan club". And full range in general.

It's just that the more technical drawings are the ones that show it at the top. I hope Dave will weigh in on this.

planet10 21st November 2011 05:47 PM

When i made the drawing i would not have moved the driver if Scott had not OKed it, but i'd tend to favour the Zd = 8.5" as in the original sketch.

dave

Gary the Grey 21st November 2011 11:26 PM

Original sketch ... 8.5?
 
Hi Dave,

The only sketch I have is the one alongside the technical piece drawings.
It doesn't have any dimensions on it, but it looks like the driver center is about 5" from the top of the cabinet. Is that the original sketch you were talking about? Or was there another drawing that I didn't notice?

planet10 22nd November 2011 02:20 AM

The drawing i made is based on a sketch here somewhere on the forum drawn from Scott's verbal discription ...

dave

Gary the Grey 22nd November 2011 03:24 AM

The project I hope to do for the Feastrex is farrrrrrr in the future, probably. I just hope and dream to have those. I'll be starting on some kind of project for the new Alpair 12.2 or .3 with the fantastic paper cone and all the improvements that Mark is bringing to the table next spring. Who knows maybe I'll love it so much that I'll forget about the Feastrex! But I doubt it at this point. I might start sooner with a project using the Markaudio WHP-70.

Thanks for your help.

planet10 22nd November 2011 04:19 AM

Quote:

Originally Posted by Gary the Grey (Post 2790643)
'll be starting on some kind of project for the new Alpair 12.2 or .3 with the fantastic paper cone and all the improvements that Mark is bringing to the table next spring. Who knows maybe I'll love it so much that I'll forget about the Feastrex!

you might be happily surprised.

Quote:

I might start sooner with a project using the Markaudio WHP-70
CHP70? Check out the CSS EL70 (made by Mark Audio)

dave

Gary the Grey 22nd November 2011 01:02 PM

WHP-70?
 
That's right. I meant CHP-70. I must have been very tired when I typed that.
I'll look into the CSS EL-70.

Gary the Grey 28th November 2011 03:06 AM

Feastrex is fantastic but interested in 10.2 MAOP!
 
Pretty much said it all in the title. I am watching the development of Mark's 10.2 MAOP with great interest. I think it's more interesting than the CSS EL-70. We'll see how that changes my focus on Full Range!


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