Specification Sheet - Mod 12-70

12" - 70 W Mod Series Loudspeaker
Mod 12-70 -
4Ω /
8Ω /
16Ω
General Characteristics
Nominal Overall Diameter 306 mm 12 in
Nominal Voice Coil Diameter 38 mm 1.5 in
Magnet Weight 640 g 23 oz
Overall Weight 2.4 kg 5.29 lbs
Flux Density 1.16 T
Thiele-Small Parameters
16Ω
Voice Coil DC Resistance RE 3.53 5 12 Ω
Resonance Frequency ƒS 74 78 83 Hz
Mechanical Q Factor QMS 14.63 13.77 7.84
Total Q Factor QTS 0.9 0.89 1.04
Mechanical Moving Mass MMS 30.6 29.6 30.3 g
Mechanical Compliance CMS 151 141 125 µm/N
Force Factor BxL 7.23 8.28 12.56 Wb/m
Equivalent Acoustic Volume VAS 51.7 48.1 42.4 lt.
Maximum Linear Displacement XMAX ±1.5 ±1.5 ±1.5 mm
Reference Efficiency nO 2.1 2.09 1.88 %
Diaphragm Area SD 490.9 490.9 490.9 cm2
Losses Electrical Resistance RES 51 67.7 80 Ω
Voice Coil Inductance @ 1kHz LE 0.43 0.58 1 mH
Electrical Q Factor QES 0.96 0.95 1.20
Constructive Characteristics
Magnet Ferrite
Voice Coil Winding Copper
Voice Coil Former Epotex
Cone Material Paper
Surround Material Integrated Paper
Dust Dome Material Non-treated Cloth
Basket Material Pressed Sheet Steel
Electrical Characteristics
16Ω
Nominal Impedance 4 8 16 Ω
Rated Power 70 70 70 W
Musical Power 140 140 140 W
Sensitivity@1W,1m 96 97.5 96 dB
Product Dimensions
Note: all dimensions are in mm.
MOD12-70 angled view
MOD12-70 bottom view
MOD12-70 side view
MOD12-70 top view