Specification Sheet - 12" Blackbird 40

12" - 40 W Jet Series Loudspeaker
12" Blackbird 40 -
8Ω /
16Ω
General Characteristics
Nominal Overall Diameter 307 mm 12 in
Nominal Voice Coil Diameter 32 mm 1.26 in
Magnet Weight 300 g 11 oz
Overall Weight 2 kg 4.41 lbs
Flux Density 1.28 T
Voice Coil Winding Depth 9 mm 0.35 in
Magnetic Gap Depth 6 mm 0.24 in
Thiele-Small Parameters
16Ω
Voice Coil DC Resistance RE 5.9 12 Ω
Resonance Frequency ƒS 93.2 90.1 Hz
Mechanical Q Factor QMS 14.29 13.97
Total Q Factor QTS 1.36 1.63
Mechanical Moving Mass MMS 28.7 27.4 g
Mechanical Compliance CMS 102 114 µm/N
Force Factor BxL 8.2 10.06 Wb/m
Equivalent Acoustic Volume VAS 34.6 39 lt.
Diaphragm Area SD 490.9 490.9 cm2
Voice Coil Inductance @ 1kHz LE 0.4 0.72 mH
Electrical Q Factor QES 1.50 1.85
Constructive Characteristics
Magnet Reinforced Alnico
Voice Coil Winding Copper
Voice Coil Former Kapton
Cone Material Paper
Surround Material Integrated Paper
Dust Dome Material Non-treated Cloth
Basket Material Pressed Sheet Steel
Surround Treatment Yes
Electrical Characteristics
16Ω
Nominal Impedance 8 16 Ω
Rated Power 40 40 W
Musical Power 80 80 W
[email protected],1m 96 95.2 dB
Product Dimensions
Note: all dimensions are in mm.
Blackbird 12" 40W Side
Blackbird 12" 40W Underside
Blackbird 12" 40W Cone