This is part of a post I recently published on a thread about ADS 1590's.
On of my ultimate A/B comparisons would be to compare the ADS L1590s to one of Mike Kelly's latest designs. This should really show how far speaker design and materials have evolved. I'm sure that Mike has "evolved" as well. FWIW-look at this review of the Aerial Acoustic Model 7T. Same basic layout as the 30 year old ADS 1590s but the bigger story is the specs at the end of the review.
http://www.stereophile.com/content/a...7t-loudspeaker
Aerial Acoustics Model 7T specs:
Frequency response: 28Hz–25kHz, ±2dB; –6dB at 23Hz.
Impedance: 4 ohms nominal
Power requirements: 25W minimum, >100W recommended
Sensitivity: 89dB/2.83V/m.
Weight: 96 lbs
Dimensions: 44.5" (1130mm) H by 9.7" (245mm) W by 15.3" (390mm) D (height includes base).
Manufacturer: Aerial Acoustics Corporation, 100 Research Drive, Wilmington, MA 01887
Price-$9850
Compare to:
http://sportsbil.com/ads/l-1590-brochure.pdf
All of these specs are nearly identical to the 30 year old ADS 1590's except the price!! I paid $2200 per pair in 1986. If you take inflation into account, I'd consider the old prices to be in the same league wiht teh new prices. $2200 was 1/3 the cost of a decent car in 1986. Ten grand is around 1/3 teh price of a decent car today. If any ADS fans are reading this thread you have to be smiling a bit and wondering what the Aerials would sound like compared to the old ADS design. People on AK wax philosophically about whether the old designs are competitive with the latest designs. This is one of the best possible tests that I could ever come up. Same designer/same configuration/nearly identical specs/30 years of science/engineering/materials and experience by one of the best known and highly regarded speaker designers of either era. It looks like Mike Kelly is shooting for the same type of buyers that he was targeting 30 years ago.(That was meant as a compliment.) I don't know if anyone else in the ADS community noticed the striking similarity in specs. I may start a thread about this for the ADS fans on AK. It would be an interesting listening experience.
This would also make for an interesting part of an interview with Mike Kelly.
PS- No one buys speakers based on specs. I realize that specs are just an indicator for the buyer. I never heard of anyone that liked speaker X better than speaker Y but chose speaker Y because the spec sheet looked better. However, specs are very important to the engineer/designer.