8 Inch (203 mm) Stamped Frame Subwoofer
This 8” woofer/subwoofer creates clear and natural low-end sound for your home audio system, including bookshelf two-way systems or high-end home theaters. With an EBP of 94, this woofer is ideal for ported systems. This unit is driven by a heavy-duty dual ferrite magnet and an overhung 4-layer coil. The cone is a Klippel optimized Abacá fiber cone with rubber surround. The stamped steel basket has additional depth below the spider for extra mechanical travel. Double lug, quick connect terminals for series or parallel wiring.
- High excursion woofer/subwoofer
- 8" (203 mm) stamped-steel basket - deep draw below spider
- 75 watts, 4 ohms, 87 dB SPL
- 1.5" voice coil, copper wire on aluminum former
- Dual ferrite magnet for high Bg and X-mech
- Highly damped abaca fiber cone with half roll 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.
| Model # | BWF-8001 |
|---|---|
| Speaker Type | Subwoofer |
| Size, Nominal (inch & mm) | 8" (203 mm) |
| Shape of Speaker | Round |
| Application | High-End Audio and Home Theater, Indoor |
| RoHS Compliant | Yes |
| Rated Impedance (Ω) | 4 |
| DC Resistance (Re) (Ω) | 3.9 |
| Rated Power IEC268-5 (W) | 75 Watts |
| Program Power (W) | 150 |
| Frequency Range (Hz) | 25 - 1,000 |
| Sensitivity (dB SPL) ¹ | 87 |
| Resonant Frequency (Fs) (Hz) +/- 15% | 33 |
| Nominal Impedance (Z) (Ω) | 4 |
| Voice Coil Inductance (Le) (mH) | 1.25 |
| Mechanical Q Factor (Qms) | 5.7 |
| Electrical Q Factor (Qes) | 0.35 |
| Total Q Factor (Qts) | 0.32 |
| Moving Mass (Mms) (gm) | 65.0 |
| Suspension Compliance (Cms) (mm/N) | 0.34 |
| Mechanical Resistance (Rms) (kg/s) | 2.30 |
| Surface Area of Diaphragm (Sd) (cm²) | 227.0 |
| Compliance Equivalent Volume (Vas) (L) | 25.0 |
| Motor Force Factor (BL) (T•M) | 12.5 |
| Efficiency (η₀) (%) | 0.26 |
| Efficiency Bandwidth Product (EBP) (Fs/Qes) | 94.2 |
| Basket Type | Stamped steel |
| Terminal Size (mm) | 7.5 x 5.1 |
| Voice Coil Diameter (mm) | 38.7 |
| Voice Coil Wire Material | Copper |
| Voice Coil Former Material | Aluminum |
| Magnet Material | Ferrite |
| Magnet Weight (g) | 567 |
| Cone Body Material | Abaca fiber |
| Cone Surround Material | Rubber |
| Spider Material | Conex |
| Dust Cap Material | Paper composite |
| Displacement Limit Due to Force Factor Variation (mm) | 7.81 |
| Displacement Limit Due to Compliance Variation (mm) | 6.70 |