Specification Sheet - P15N No Bell

15" - 50 W Vintage Alnico Loudspeaker
P15N No Bell -
8Ω /
16Ω
General Characteristics
Nominal Overall Diameter 385 mm 15 in
Nominal Voice Coil Diameter 38 mm 1.5 in
Magnet Weight 826 g 29 oz
Overall Weight 3.9 kg 8.6 lbs
Flux Density 1.26 T
Voice Coil Winding Depth 10 mm 0.39 in
Magnetic Gap Depth 8 mm 0.31 in
Thiele-Small Parameters
16Ω
Voice Coil DC Resistance RE 6.22 12 Ω
Resonance Frequency ƒS 77.9 67 Hz
Mechanical Q Factor QMS 6.8 5.74
Electrical Q Factor QES 1.36 1.33
Total Q Factor QTS 1.22 1.08
Mechanical Moving Mass MMS 53.9 42.9 g
Mechanical Compliance CMS 78 132 µm/N
Force Factor BxL 10.49 13.16 Wb/m
Equivalent Acoustic Volume VAS 62.6 105.3 lt.
Maximum Linear Displacement XMAX ±1 ±1 mm
Reference Efficiency nO 2.62 2.32 %
Diaphragm Area SD 754.8 754.7 cm2
Losses Electrical Resistance RES 50 55 Ω
Voice Coil Inductance @ 1kHz LE 0.9 1.28 mH
Constructive Characteristics
Magnet Alnico
Voice Coil Winding Copper
Voice Coil Former Kapton
Cone Material Paper
Surround Material Integrated Paper
Dust Dome Material Solid Paper
Basket Material Pressed Sheet Steel
Surround Treatment No
Electrical Characteristics
16Ω
Nominal Impedance 8 16 Ω
Rated Power 50 50 W
Musical Power 100 100 W
Sensitivity@1W,1m 96.1 96.7 dB
383.0358.04.06.5107.0n° 8 holes 6×9on Ø372.08.051.0158.098.0