12" Full Range Driver

[Dylanthecat]

Hi All,

Found this FR 12" driver on the nevernet the other day.

Be interested in any comments on the Freq Curves and Specs.

I have ordered two pairs in via air freight. These units are $22USD each direct from works. I will let you know what they sound like if interested. BR Martin

GENERAL SPECIFICATIONS
Nominal diameter 305(12) mm (in.)
Nominal impedance 8 Ω
Minimum impedance 5.8 Ω
Program power (1) 300 W
AES Power rating(2) 150 W
Sensitivity (3) 97.5 dB
Frequency range 74 ~ 16000 Hz
Voice coil diameter 50(2) mm (in.)
Chassis material Steel
Magnet material Ferrite
Magnet dimensions (ODxIDxh) 156 x 80 x 20 mm
Coil material CCAW
Former material Glass Fiber
Xmax(4) 3 mm
Xmech(5) 7 mm
Gap height 8 mm
Voice coil Wingding height 10 mm

SMALL SIGNAL PARAMETERS
DC resistance(Re) 5 Ω
Resonance frequency(Fs) 74 Hz
Moving mass(Mms) 32 g
Compliance(Cms) 0.14 mm/N
Force factor(BL) 11 N/A
Mechanical Q-factor(Qms) 6.5
Electrical Q-factor(Qes) 0.77
Total Q-factor(Qts) 0.69
Equivalent air volume(Vas) 62 I
Voice coil Inductance(Le) 0.70 mH
Diaphragm area(Sd) 533 cm2
Reference efficiency(Eta O) 3.2 %