The D'Appolito, MTM Configuration


One speaker technology which is I think old but hasn't gotten the praise it deserves is the Joseph D'Appolito configuration.  In short, it uses a tweeter vertically sandwiched between two midwoofers.  Using two actual midranges is a variation on the theme. 

What got me thinking of this was the $220,000 speaker pair that appeared on Stereophile's coverage of the Florida Audio Expo, which made me think, fondly, of the original, 1980's era  Focal Utopia where I first heard this arrangement. 

It's a very good arrangement for those who love detail and want a speaker that's relatively easy to live with.

How about you? Have a pair of D'Appolito-like speakers ever won you over?

erik_squires

Showing 1 response by simonmoon

I used to own a pair of the Aria 5 speaker kits back in the late 90’s.

This was back when Focal still sold raw drivers to us DIY’s.

These were probably the very first D’Appolito kits available. I built them from scratch. Not being a woodworker, my enclosures, while being acoustically sound, were not exactly the best looking. But I was actually somewhat ahead of my time, using inert tar like material (I wish I could remember what it was) with sand mixed in to coat the inside walls of the enclosure. Really deadened the box.

This Stereophile article from 1990 says the kits were $600, about $1400 today, was a bargain back then.

Aria 5

What I can remember about them, is, they had incredible detail. One would seriously have to spend several many times as much on a commercially available speaker to top them.

And the same goes for soundstage and imaging. Nothing in the $600-$700 range at the time even came close..

I am still a DIY’r. and today, I believe building a DIY kit yields a speaker that sounds about as good as a commercially available speaker at about 5 times the $$. Back then, I think the margin was even greater. Maybe 8 times.

These aren’t the ones I built, but they look similar.

 

ARIA 5 kist