View this product description in Norwegian.

THE GOVERNOR
gov'er nor n. a thick and raunchy British-voiced 12" guitar speaker with leading tonal characteristics
Coloration : Classic British tone. Thick and raunchy with lots of mids
Genre : Classic British Rock tone of the 60's and 70's
SPECIFICATION
Nominal Basket Diameter 12", 304.8mm
Nominal Impedance* 8 ohms
Power Rating** Watts 75W / Music Program N/A
Resonance 101Hz
Usable Frequency Range*** 70Hz-5kHz
Sensitivity 102
Magnet Weight 56 oz.
Gap Height 0.312", 7.92mm
Voice Coil Diameter 1.75", 44.5mm
THIELE & Small Parameters
Resonant Frequency (fs) 101Hz
DC Resistance (Re) 6.81
Coil Inductance (Le) 0.41mH
Mechanical Q (Qms) 11.41
Electromagnetic Q (Qes) 0.59
Total Q (Qts) 0.56
Compliance Equivalent Volume (Vas) 30.1 liters / 1.1 cu. ft.
Peak Diaphragm Displacement Volume (Vd) 64cc
Mechanical Compliance of Suspension (Cms) 0.08mm/N
BL Product (BL) 15.3 T-M
Diaphragm Mass inc. Airload (Mms) 32 grams
Efficiency Bandwidth Product(EBP) 171
Maximum Linear Excursion (Xmax) 1.2mm
Surface Area of Cone (Sd) 519.5 cm2
Maximum Mechanical Limit (Xlim) N/A
MOUNTING Information
Recommended Enclosure Volume
Sealed Acceptable
Vented Acceptable
Overall Diameter 12.02", 305.3mm
Baffle Hole Diameter 10.97", 278.6mm
Front Sealing Gasket fitted as standard
Rear Sealing Gasket fitted as standard
Mounting Holes Diameter 0.25", 6.4mm
Mounting Holes B.C.D. 11.63", 295.4mm
Depth 5.2", 132mm
Net Weight 10.8 lbs., 4.9 kg
Shipping Weight 12.6 lbs., 5.7 kg
MATERIALS of Construction
Copper voice coil
Nomex former
Ferrite magnet
Non-vented core
Pressed steel basket
Paper Cone
Paper cone edge
Zurette dust cap