6.5” (165 mm) XBL² High Excursion, Ultra Low Distortion Woofer

Model #
BWX-6502
Part #
82141
In stock
$129.40

MISCO has taken the XBL² technology and executed with effectiveness and elegance in the 82141, 6.5” woofer. By using a high energy neodymium ring magnet, a high BL is maintained while the magnet structure size and weight is minimized.  Yet the Klippel verified, linear X max (measured inductance, suspension, and BL) is a minimum of 9.5 mm!  The light weight, copper-clad aluminum voice coil travels in a double magnetic gap. It is centered within inner and outer inductance modulating elements to reduce inductance. This is an ultra-low distortion woofer and allows for a wide range of cross-over points.

  • XBL2 motor design with 9.5 mm linear, Klippel verified, X-max
  • Rigid, vented cast aluminum frame
  • Abaca fiber cone body with damped rubber surround
  • 1.5” voice coil with light weight copper clad aluminum wire
  • Dual inside-outside copper shorting rings for ultra-low distortion.
  • High energy neodymium ring magnet for lighter weight XBL2 design
  • Designed and Assembled in the USA

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 # BWX-6502
Speaker Type Woofer
Size, Nominal (inch & mm) 6.5" (165 mm)
Shape of Speaker Round
Application High-End Audio and Home Theater, Home Audio, Indoor, Pro Sound
Rated Impedance (Ω) 8
DC Resistance (Re) (Ω) 6.4
Rated Power IEC268-5 (W) 85 Watts
Power, Peak (W) 170
Frequency Range (Hz) 40 - 1,000
Sensitivity (dB SPL) ¹ 85
Resonant Frequency (Fs) (Hz) 45
Nominal Impedance (Z) (Ω) 8
Voice Coil Inductance (Le) (mH) 0.2
Mechanical Q Factor (Qms) 8.4
Electrical Q Factor (Qes) 0.65
Total Q Factor (Qts) 0.61
Moving Mass (Mms) (gm) 22.0
Suspension Compliance (Cms) (mm/N) 0.44
Mechanical Resistance (Rms) (kg/s) 0.87
Surface Area of Diaphragm (Sd) (cm²) 109
Compliance Equivalent Volume (Vas) (L) 7.5
Motor Force Factor (BL) (T•M) 8.2
Efficiency (η₀) (%) 0.15
Efficiency Bandwidth Product (EBP) (Fs/Qes) 69.23
Basket Type Cast aluminum
Terminal Size (mm) 6.4 x 0.8 / 4.7 x 0.5
Voice Coil Diameter (mm) 38.1
Voice Coil Wire Material Copper clad aluminum
Voice Coil Former Material Kapton
Magnet Material Neodymium
Magnet Weight (gm) 145
Cone Body Material Abaca fiber
Cone Surround Material Rubber
Spider Material Polycotton
Dust Cap Material Abaca fiber