Bomber WOOFER 12″ W-ONE 125 WRMS 8 OHMS
Best box: 71.0 L sealed · Fc 89.1 Hz · F3 72.8 Hz
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Comparable 12.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Bomber WOOFER 12″ W-ONE 125 WRMS 8 OHMS does not fit your target box volume or tuning. Each entry links to its full enclosure design and Thiele/Small parameters.
⚠️ Engineering Notice for Builders
- Limited linear excursion (Xmax: 3.55 mm); set a high-pass subsonic filter at 25–30 Hz when driven with high power.
Textbook Bass Reflex — not recommended (6.1 dB bass hump)
PORT BUILDABLE| Net Box Volume (Vb) | 56.8 Liters |
| Tuning Frequency (Fb) | 53.5 Hz |
| F3 (-3 dB Cutoff) | 86.0 Hz |
| F6 / F10 Extension | 78.9 Hz / 69.0 Hz |
| Port Inner Diameter | Ø 7.5 cm |
| Port Physical Length | 2.8 cm |
| First Pipe Resonance | 6181.0 Hz |
| Estimated MOL @ F3 | 117.9 dB SPL |
Sealed (Acoustic Suspension) — compromise
SUITS INFINITE / OPEN BAFFLEWith Qts 2.26 a Butterworth (Qtc 0.707) box would be many times Vas. A box equal to Vas reaches Qtc 3.196; for a flat response this driver is better used on an infinite (IB) or open baffle.
| Net Box Volume (Vb) | 71.0 Liters |
| System Q (Qtc) | 3.196 (above Butterworth: Qtc cannot fall below Qts (2.26)) |
| System Resonance (Fc) | 89.1 Hz |
| F3 (-3 dB Cutoff) | 72.8 Hz |
| F6 / F10 Extension | 66.7 Hz / 58.8 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 63.0 Hz |
| Total Q (Qts) | 2.26 |
| Electrical Q (Qes) | 3.22 |
| Mechanical Q (Qms) | 7.58 |
| Equivalent Volume (Vas) | 71.0 Liters |
| Diaphragm Area (Sd) | 511.0 cm² |
| DC Resistance (Re) | 5.79 Ω |
| Efficiency Bandwidth Product (EBP) | 19.6 |
| Linear Excursion (Xmax) | 3.5 mm |
| Thermal Power (Pe) | 125.0 W |
| Nominal Diameter | 12.0" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for Bomber WOOFER 12″ W-ONE 125 WRMS 8 OHMS?
A simple ported box is not recommended for Bomber WOOFER 12″ W-ONE 125 WRMS 8 OHMS: the textbook alignment (56.8 liters tuned to 53.5 Hz) needs a 2.8 cm port, and no nearby retune stays buildable without a bass hump. A sealed box, a passive radiator or a folded duct is the practical choice.
Can Bomber WOOFER 12″ W-ONE 125 WRMS 8 OHMS be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 71.0 liters with a Qtc of 3.196 (above Butterworth: Qtc cannot fall below Qts (2.26)), the system exhibits an F3 of 72.8 Hz.
What port dimensions should be used for Bomber WOOFER 12″ W-ONE 125 WRMS 8 OHMS to avoid port chuffing?
A straight 7.5 cm port would need 2.8 cm of length, which does not fit a practical cabinet. Use a passive radiator or a folded/3D duct instead of a straight tube.
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