For anyone whose interested i did a parameter test on some dovedale 12in bass units (i think) 3's and are 6 to 8ohms, green felt flange, square magnet rubber roll suspension. My findings were-
Fr 20.712Hz
DC ohm 5.4
Qts 0.342
Qes 0.4
Qms 2.343
Vas 319.1L
Fr 20.712Hz
DC ohm 5.4
Qts 0.342
Qes 0.4
Qms 2.343
Vas 319.1L