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Nelson Pass 19th September 2007 08:27 PM

New MJK Baffle Article
There's a great new MJK article on baffles and crossovers
focusing on full-range drivers:


Netlist 19th September 2007 08:34 PM

Link doesn't work, Nelson.
Was this the one you had in mind?


Vix 19th September 2007 08:50 PM

Or this? :)

A very nice article ;)

Nelson Pass 19th September 2007 09:11 PM

Yes, thank you. Everytime I don't check my work....


Brett 20th September 2007 02:07 AM

Very good article, as Martin's usually are.
I'd still go active, but it was very informative and answered a couple of questions I had re OB design.

happy.gringo 20th September 2007 02:46 AM

I wonder if it could be built and then different full range drivers tried on top, as long as they are 8 ohms and about 90db?

planet10 20th September 2007 04:03 AM

I just read that this afternoon. Another excellent treatise,

The graphs showing hoe the driver response, baffle response and XO response all work together to get a flat response are particularily illustrative.


britbug 20th September 2007 04:27 PM

Yes, very cool study, as always.
I wonder if it would be possible to use a JX92S instead of the fostex, and so crossover at lower frequencies? That could be a very desirable speaker.

planet10 20th September 2007 05:20 PM


Originally posted by britbug
I wonder if it would be possible to use a JX92S instead of the fostex, and so crossover at lower frequencies?
The study shows that each combination of mid/tweeter and bass driver needs to be considered together with the baffle as a system, and that changing any drivers requires a reconsideration of all the parameters of the system.

I do expect you would have an easier job of substituting a similar efficiency mid/tweeter. Adapting the sytsem for active XO would give even more flexibility with the mid-tweeter but at nominally higher cost (but when one considers that many diyers have more than a single amp kicking around, it may actually take less cash flow)


Scottmoose 20th September 2007 05:24 PM

Sensitivity of the Jordan is a bit lower at 88db, and the parameters are different, so as Dave says, you'd have to design something for it from the ground up. There's no reason why that's not possible though. I suspect the Jordan would work rather well run on a baffle, with a suitable woofer in support.

Yet another superb paper on design; one of the best available. Actually, I'd call it the best, period, given that Linkwitz's commentaries, superb though they are, have a somewhat different purpose. Thank you, Martin.

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