10 Inch (272 mm) 5 Ohm, Cast Frame, Damped Fiber Cone Subwoofer

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The 82131, 10” premium subwoofer creates great low frequency output for professional and high-end audio applications. Reliability, high power handling and long throw is achieved with a 4-layer copper voice coil in a dual ferrite magnet design. The cone is a proprietary treated cone for both enhanced damping and water resistance. A rubber surround provides both high compliance and stability for the suspension. Connection is made via gold plated, spring type connectors. Included is a rubber mounting gasket which both conceals screws and seals the driver when front mounted. This gasket is removeable. This subwoofer a solid foundation for any sound system that needs top tier bass.

See model BWF-1002 (82132) for a similar driver with a Hemp fiber cone and durable foam surround.

  • 13 mm linear excursion (BL)
  • Low 27 Hz resonant frequency
  • 10” (272 mm) 12 spoke cast aluminum basket
  • 150 watts, 5 ohms, 86 dB SPL
  • 2”, four-layer copper voice coil, 5 ohm impedance
  • Dual ferrite magnet allowing for long throw
  • Fiber cone with a proprietary damping treat and NBR rubber edge

Bold North Audio products are the most accurate, engineered audio transducers available. Each design requires Klippel vibrational test analyses to verify the key parts of optimal audio performance. While we rely heavily on objective science to lead us, we understand that most of all speakers need to tell the musical truth. Our engineers, musicians, and recording studio veterans are the final judges of when a design is worthy of the Bold North Audio brand.

All Bold North Audio products are assembled in Minnesota, with parts sourced from around the world to produce the highest combination of performance, consistency, and customer value.

More Information
Model # BWF-1001
Speaker Type Subwoofer
Size, Nominal (inch & mm) 10" (250 mm)
Shape of Speaker Round
RoHS Compliant Yes
Rated Impedance (Ω) 5
DC Resistance (Re) (Ω) 4.1
Rated Power IEC268-5 (W) 150 Watts
Continuous Power (W) 150
Program Power (W) 300
Frequency Range (Hz) 20 - 200
Sensitivity (dB SPL) ¹ 86
Resonant Frequency (Fs) (Hz) +/- 15% 27
Nominal Impedance (Z) (Ω) 5
Voice Coil Inductance (Le) (mH) 2.52
Mechanical Q Factor (Qms) 3.4
Electrical Q Factor (Qes) 0.34
Total Q Factor (Qts) 0.31
Moving Mass (Mms) (gm) 143
Suspension Compliance (Cms) (mm/N) 0.21
Mechanical Resistance (Rms) (kg/s) 7.59
Surface Area of Diaphragm (Sd) (cm²) 346.4
Compliance Equivalent Volume (Vas) (L) 37.7
Motor Force Factor (BL) (T•M) 17.3
Motive Force (BL²/Re) (T•m²)/Ω) 72.9
Efficiency (η₀) (%) 0.24
Efficiency Bandwidth Product (EBP) (Fs/Qes) 80.9
Basket Type Cast aluminum
Terminal Size (mm) Knurled push style spring connectors
Voice Coil Diameter (mm) 51
Voice Coil Wire Material Round copper wire
Voice Coil Former Material Aluminum
Magnet Material Ferrite
Magnet Weight (g) 1077
Cone Body Material Treated, pressed pulp
Cone Surround Material Rubber
Spider Material Polycotton
Dust Cap Material Polypropylene
Displacement Limit Due to Force Factor Variation (mm) 13.0
Displacement Limit Due to Compliance Variation (mm) 6.64