MISCO has taken the XBL² technology and executed with effectiveness and elegance in the BWX-6501 (82109), 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 XBL (BL force displacement) is over 10 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 10 mm linear displacement, XBl
- Abaca fiber cone body with damped rubber surround
- Dual inside-outside copper shorting rings for ultra-low distortion
- Aluminum phase plug for reduction of acoustic-wave energy interference
- 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.
| Model # | BWX-6501 |
|---|---|
| Speaker Type | Woofer |
| Size, Nominal (inch & mm) | 6" |
| Shape of Speaker | Round |
| Application | High-End Audio and Home Theater, Home Audio, Indoor, Musical Instruments, Pro Sound |
| RoHS Compliant | Yes |
| Rated Impedance (Ω) | 8 |
| DC Resistance (Re) (Ω) | 6.4 |
| Rated Power IEC268-5 (W) | 85 Watts |
| Program Power (W) | 170 |
| Frequency Range (Hz) | 40 - 4,000 |
| Sensitivity (dB SPL) ¹ | 85 |
| Resonant Frequency (Fs) (Hz) | 47 |
| Nominal Impedance (Z) (Ω) | 8 |
| Voice Coil Inductance (Le) (mH) | 0.2 |
| Mechanical Q Factor (Qms) | 8.5 |
| Electrical Q Factor (Qes) | 0.48 |
| Total Q Factor (Qts) | 0.46 |
| Moving Mass (Mms) (gm) | 18.0 |
| Suspension Compliance (Cms) (mm/N) | 0.62 |
| Mechanical Resistance (Rms) (kg/s) | 0.62 |
| Surface Area of Diaphragm (Sd) (cm²) | 125 |
| Compliance Equivalent Volume (Vas) (L) | 13.3 |
| Motor Force Factor (BL) (T•M) | 8.4 |
| Efficiency (η₀) (%) | 0.3 |
| Efficiency Bandwidth Product (EBP) (Fs/Qes) | 97.92 |
| Basket Type | Cast aluminum |
| Terminal Size (mm) | 6.4 x 0.8 / 4.7 x 0.5 |
| Voice Coil Diameter (mm) | 31.8 |
| Voice Coil Wire Material | Copper clad aluminum |
| Voice Coil Former Material | Paper |
| Magnet Material | Neodymium |
| Magnet Weight (gm) | 8.22 |
| Cone Body Material | Aluminum |
| Cone Surround Material | Rubber |
| Spider Material | Cotton |
| Displacement Limit Due to Force Factor Variation (mm) | 10.1 |
| Displacement Limit Due to Compliance Variation (mm) | 6.0 |
For all orders exceeding a value of 100USD shipping is offered for free.
Returns will be accepted for up to 10 days of Customer’s receipt or tracking number on unworn items. You, as a Customer, are obliged to inform us via email before you return the item.
Otherwise, standard shipping charges apply. Check out our delivery Terms & Conditions for more details.
