http://www.tcsounds.com/tc1000.htm

I haven't dug into the information about paramaters of subs, so I don't unstand most of them.

12" TC-1000

Qts 0.282
Qes 0.305
Qms 3.780
Fs 19hz
Res 3.70Ω
Ls 2.38mH
Lp 3.51mH
Rp 2.99Ω
Dia 240mm
Vas 132l
mms 153g
cms 460um/N
bl 15.4T*m
Spl 86.9dB