Apologize for what, o sellerwithintegrity? For pointing out that your claims for these speakers might be a tad overblown?
I have speakers using dynamic dipole drivers for the bass so I have an idea what the tradeoffs are, although dipole bass is as good as it gets. If you want a better idea yourself, examine this site carefully:
www.linkwitzlab.com
Regarding the excursion, here is a link to the subwoofer with possibly the highest excursion out there, the Adire Tumult.
http://www.adireaudio.com/diy_audio/drivers/adire/tumult.htm
Notice the very large roll surround that is clearly visible? The Tumult has a 1.5 inch xmax. Your magic woofers are claiming 2 inch. So the surround should be even bigger.
Without the big, flexible surround the cone cannot move in and out by the required amount, since the surround allows the movement to take place. It's quite simple really.
You can tell even from the poor quality photos on the Gilmore site that the surround is nowhere near enough to allow that kind of xmax. Of course, if you care to have the woofers Dumaxed for us and post the results I will eat my words and even say sorry.
http://www.dlcdesignaudio.com/dumax.htm
You may also notice the very large motor on the Tumult, handy to control the cone at those kind of excursions.
The weak motors on the Gilmore drivers are, you stated, to raise the Qts. Presumably to create a low frquency rise in the response to counteract dipole roll off so you don't need active EQ? This is valid design decision but has its own tradeoffs as noted here:
http://www.linkwitzlab.com/faq.htm#Q34
As for the SPL question, I would simply invite anyone who is interested to download the following spreadsheet and plug in the numbers themselves.
http://www.linkwitzlab.com/spl_max1.xls
The path difference is half the baffle width, in this case 450mm.
The answer I got for four 12 inch drivers with a 25mm xmax is 98dB at 25Hz. Just for giggles, keep adding drivers until you get to 127dB. You'll find you need 100 of them.
Of course, the 'so-called expert' who designed this spreadsheet might not know what he is talking about. In which case I suggest you contact Seigfried Linkwitz and tell him yourself. I assume the name is familiar?
You made the claim "The Gilmore speakers, especially the model 2's, can play bass louder and cleaner than any other dipole or planar for sure and any home audio dynamic speakers we know of."
I find the dipople/planar part of this statement at least plausible, but the second part less so. Any other home audio dynamic speaker?
That's a heck of a bold statement. Price no object?
Finally, to suggest that the height of a line source doesn't matter is rather strange. Anyone who has listened to the Newform R645 speaker or other similar ribbon speakers can tell you what happens when you either stand up or sit too low. The treble rolls off.
To avoid this, your ear needs to be within the range of the ribbon, which may be a problem with the Model 3.
As I said earlier, I'm sure these speakers sound great. But to make all these hyperbolic claims taints them with a strong whiff of snake oil.
Have a lovely day.
