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Warm, well balanced tone with low end focus. It responds to overdrive distortion with a rich smooth crunch and bright lead-voice fuzz.

General Characteristics
Nominal Overall Diameter 306mm
12 in
Nominal Voice Coil Diameter 32mm
1.25 in
Magnet Weight 426 g
15 oz
Flux Density 1.10 T

Thiele-Small Parameters
Voice Coil DC Resistance RE
6.30 Ω
Resonance Frequency ƒS
82 Hz
Mechanical Q Factor QMS
7.5
Electrical Q Factor QES
1.73
Total Q Factor QTS
1.4
Mechanical Moving Mass MMS
29.4 g
Mechanical Compliance CMS
129 µm/N
Force Factor BxL
7.43 Wb/m
Equivalent Acoustic Volume VAS
43.6 lt.
Maximum Linear Displacement XMAX
1.5 mm
Reference Efficiency nO
1.33%
Diaphragm Area SD
490.9cm2
Losses Electrical Resistance RES
28 Ω
Voice Coil Inductance @ 1kHz LE
0.66 mH

Constructive Characteristics
Magnet Ferrite
Voice Coil Winding Copper
Voice Coil Former Epotex
Cone Paper
Surround Integrated Paper
Dust Dome Non Treated Cloth
Basket Pressed Sheet Steel

Electrical Characteristics
Nominal Impedance
8/16 Ω
Rated Power
50 W
Musical Power
100 W
Sensitivity@1W, 1m
94.3 dB