Bomber WOOFER 12″ B-DUO 200 WRMS 8 OHMS
Best box: 76.0 L sealed · Fc 87.7 Hz · F3 68.8 Hz
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Comparable 12.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Bomber WOOFER 12″ B-DUO 200 WRMS 8 OHMS does not fit your target box volume or tuning. Each entry links to its full enclosure design and Thiele/Small parameters.
Textbook Bass Reflex — not recommended (4.2 dB bass hump)
PORT BUILDABLE| Net Box Volume (Vb) | 60.8 Liters |
| Tuning Frequency (Fb) | 52.7 Hz |
| F3 (-3 dB Cutoff) | 80.6 Hz |
| F6 / F10 Extension | 72.1 Hz / 60.7 Hz |
| Port Inner Diameter | Ø 10.0 cm |
| Port Physical Length | 6.8 cm |
| First Pipe Resonance | 2532.0 Hz |
| Estimated MOL @ F3 | 119.8 dB SPL |
Sealed (Acoustic Suspension) — compromise
SUITS INFINITE / OPEN BAFFLEWith Qts 1.48 a Butterworth (Qtc 0.707) box would be many times Vas. A box equal to Vas reaches Qtc 2.093; for a flat response this driver is better used on an infinite (IB) or open baffle.
| Net Box Volume (Vb) | 76.0 Liters |
| System Q (Qtc) | 2.093 (above Butterworth: Qtc cannot fall below Qts (1.48)) |
| System Resonance (Fc) | 87.7 Hz |
| F3 (-3 dB Cutoff) | 68.8 Hz |
| F6 / F10 Extension | 61.2 Hz / 52.4 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 62.0 Hz |
| Total Q (Qts) | 1.48 |
| Electrical Q (Qes) | 1.713 |
| Mechanical Q (Qms) | 10.9 |
| Equivalent Volume (Vas) | 76.0 Liters |
| Diaphragm Area (Sd) | 511.0 cm² |
| DC Resistance (Re) | 5.47 Ω |
| Efficiency Bandwidth Product (EBP) | 36.2 |
| Linear Excursion (Xmax) | 6.5 mm |
| Thermal Power (Pe) | 200.0 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″ B-DUO 200 WRMS 8 OHMS?
A simple ported box is not recommended for Bomber WOOFER 12″ B-DUO 200 WRMS 8 OHMS: the textbook alignment (60.8 liters tuned to 52.7 Hz) needs a 6.8 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″ B-DUO 200 WRMS 8 OHMS be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 76.0 liters with a Qtc of 2.093 (above Butterworth: Qtc cannot fall below Qts (1.48)), the system exhibits an F3 of 68.8 Hz.
What port dimensions should be used for Bomber WOOFER 12″ B-DUO 200 WRMS 8 OHMS to avoid port chuffing?
A straight 10.0 cm port would need 6.8 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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