Magico Q7 . . . wow

prdprez has a really good point - one look at the magico and you can tell very litlle attention has been paid to diffraction effects. Actually, if you look at yg, wilson and magico, there is not much attention paid to diffraction on any one of them. The only line paying real attention to it is Rockport - look at the large , radiused every changing dimension on the Altair.

From Positive Feedback Issue 59:
This year they introduced their all-out realization of that design paradigm, the $165,000 Q7. Every driver of this beautifully accomplished four-way, five-driver, loudspeaker has been designed from the ground up, resulting in a system with an efficiency of 94dB.

""""" 04-05-12: Stereotaipei
You cannot get driver with a 10dB higher efficiency than the Q5 without significant changes of design (in particular on the magnet).""""""""""

actualy you can not get driver with with 10db diferencies (assuming one is not 4inch midrange and other 18inch PA woofer) - its against law of acoustical physic. the spekakers,how ever can be easily made for diferent sensitivity maximum what is posible for same caliber driver 8-12inch) is 5db and it definatley will be in upper octaves (higher force means more midrange not all FR equally is gained) which is not important for low frequencies anyway.

not sure I understand your message. Just go on any speaker driver manufacturer website, you will find a very broad range of sensitivity of drivers from 80 to 98dB...
Q5 and Q7 use similar configurations, but different drivers, with different sensitivity.

Suggest you read the soundstageglobal article:
Specifically, according to Tammam, the Q5 utilizes N38- and N42-grade neodymium in its drivers' motor systems, whereas the Q7 uses the N48 and N52 grades. These magnets allow for "higher energy storage within the material," according to Tammam, and this has allowed Magico to build motor systems that are far more powerful than any the company had developed in the past. Tammam said the magnet structures of the 10" and 12" drivers in the Q7 are so powerful that handling them requires great care, as the attractive force between two of the drivers' magnets would literally crush someone's hand if it was unfortunate enough to come between them. The point here is that these new ultra-powerful magnets have allowed Magico to design and build drivers so efficient that the overall sensitivity of the Q7 is rated at 94dB, which is quite high for a sealed-box design.

Btw.. I wait to see if really they are 94dB, would be outstanding for a sealed box.

I did not see Magico claiming a difference of 10db in drivers sensitivity. The newer Qs are, and that is a fact at least on the Q3 that was measured by PM in the UK, much more efficient than the older products, including the Q5.