First off, a quartet of Coustic Design Reference 6.5" midbass drivers. I bought these off ECA and will never use them. Great drivers, but taking up valuable space and collecting is a hobby I don't need again. These drivers are individually MLS measured for T/S params and each comes with it's own computer printout of the specified measurements.. These were the ultimate in SQ 10 years ago and will rival many drivers out today.
Here's the specs from one of the drivers for reference:
Fs: 33.67Hz
Re: 6.2 ohms
Qms: 2.44
Qes: .28
Qts: .25
Le: .38mH
Vas: 19.01L
Mms: 25.79g
Cms: 866M/N
Bl: 11.03 T/m
SPL 1w/1m: 86dB
$80 shipped for all 4.
Here's the specs from one of the drivers for reference:
Fs: 33.67Hz
Re: 6.2 ohms
Qms: 2.44
Qes: .28
Qts: .25
Le: .38mH
Vas: 19.01L
Mms: 25.79g
Cms: 866M/N
Bl: 11.03 T/m
SPL 1w/1m: 86dB
$80 shipped for all 4.