Originally Posted by Mark Seaton
Actually, the Tumult is the only driver Ilkka has tested that was designed by Dan Wiggins, and it was an original version at that (how old is that original driver design now?). Others including the SDX-15 and Avalanche drivers were designed under license of the XBL^2 technology, but not by Wiggins.
The PA Subs are just that, PA subs. I would expect the suspensions to protect against over excursion and for the driver to be pretty much bullet-proof from pro audio abuse. They should be extremely well behaved compared to any remotely comprable driver, but of course we'll see.
No matter how linear the design or cool the technology, the driver still has to be suited to the application. While it's fun to compare to the LMS-5400, remember that is a driver with multiples the expense in raw materials and custom-tooled parts. As expensive as the drivers were, they obviously weren't as expensive as they needed to be.
I wasn't referring to LMS, but instead, a standard overhung driver, as in virtually every driver tested, commercial or otherwise.
I'm not sure what the distinction is between a licensed XBl^2 motor and a Wiggins designed XBl^2 motor, nor am I sure I understand what the age of the design has to do with anything (which is a little over 5 years, to answer your question).
If you're saying that any split gap motor can be called XBl^2 then the license agreement seems lacking.
Bottom line is that very few Wiggins subwoofers have been tested in a way that gives a frame of reference. There are theoretical advantages and they've been discussed many times. Dan himself has made the case you're suggesting, by mentioning the SDX and AVA drivers, that the XBl^2 license means basically nothing, specifically in the case of the Avalanche drivers, which also have never been tested.
PA-SchmeeA and App-Schmapp. Put that driver in 5 cubes and let someone listen, then switch the driver with the Mael-X, match FR with L/T and match levels and tell me who heard what or how one was better because it's specified for HT apps.
Saying that one has more headroom above X and the other has more headroom below X, or one uses a smaller amplifier than the other, etc. is irrelevant.
If you draw the in-room extension line at 10Hz and listen at average levels in 3-4,000 cubes, there will be no discernible difference.
I understand the problems you face having to work within a strict set of parameters, but no such problems exist in DIY. That's why my subs are Tumult based and yours are not.
Tumult is a great driver. I've said so many times. I'm just not sure what XBl^2 has to do with that fact vs the same driver with an overhung motor.