Originally posted by KnuKonceptz:
As for the efficiency of the JL, they release true specs, many "manufactures" LIE to get you to buy their products ( I work for one, suckers are born everyday from the BS I write; I could really blown some of your minds away) I doubt the 91db is for real if it has a xmax around 14mm. I have the test equipment, you got one send it over I will be happy to post my results. (Woofer would be retuned, as I have no need for it......lol)
Well, I have the 15" version of the driver in question, actualy 2 of them each in their own boxes, tuned to a tested 18Hz. I have test equipment also. Here's what I got. 20Hz, 21.8V, 105dB on RS meter, uncorrected, at the seat which is 10 feet away from each sub. Each one is a wired coils in parallel which is a 4ohm load. I ran out of power (not much more than 21.8V) with the test recevier I am using until I decide how much power I want to buy. I believe the correcting factor for the RS meter at 20Hz is +7.5dB. So, you can figure out how efficient the speakers are for yourself. I'll just say they have been proven by more than myself that the specs are accurate. I don't think ANY MFR lies about their driver specs, they often just do not publish them since 1) most poeple don't know what they mean and 2) they only sell the whole package, no drivers alone.
And for $110, the 12" should be equally as good, which is a hell of a better value than the JL costing twice as much.
Link to driver specs:
http://www.partsexpress.com/Tech/295-185.html
