Specification Sheet - P10R

10" - 25 W Vintage Alnico Loudspeaker
P10R -
4Ω /
8Ω /
16Ω
General Characteristics
Nominal Overall Diameter 259 mm 10 in
Nominal Voice Coil Diameter 25 mm 0.98 in
Magnet Weight 200 g 7 oz
Overall Weight 1.4 kg 3.09 lbs
Flux Density 0.96 T
Voice Coil Winding Depth 8 mm 0.31 in
Magnetic Gap Depth 6 mm 0.24 in
Thiele-Small Parameters
16Ω
Voice Coil DC Resistance RE 3.6 6.68 12.3 Ω
Resonance Frequency ƒS 99 97 99 Hz
Mechanical Q Factor QMS 23.8 14.83 23.4
Total Q Factor QTS 1.37 1.62 1.79
Mechanical Moving Mass MMS 13.7 15.2 13.4 g
Mechanical Compliance CMS 189 177 193 µm/N
Force Factor BxL 4.6 5.83 7.27 Wb/m
Equivalent Acoustic Volume VAS 29 27.4 29.5 lt.
Maximum Linear Displacement XMAX ±0.8 ±0.8 ±0.75 mm
Reference Efficiency nO 1.85 1.7 1.43 %
Diaphragm Area SD 330 330.1 330 cm2
Losses Electrical Resistance RES 59.2 102 149 Ω
Voice Coil Inductance @ 1kHz LE 0.35 0.54 0.75 mH
Electrical Q Factor QES 1.45 1.82 1.94
Constructive Characteristics
Magnet Alnico
Voice Coil Winding Copper
Voice Coil Former Kapton
Cone Material Paper
Surround Material Integrated Paper
Dust Dome Material Felt
Basket Material Pressed Sheet Steel
Surround Treatment No
Electrical Characteristics
16Ω
Nominal Impedance 4 8 16 Ω
Rated Power 25 25 25 W
Musical Power 50 50 50 W
Sensitivity@1W,1m 95.1 94.2 94.7 dB
259.0n° 8 holes 8.4 × 6.5on Ø 245.0231.04.52.5115.065.549.56.0