


MB8D Technical Specifications
Comprehensive technical data for the MB8D woofer. Review power handling, impedance curves, frequency response charts, and dimensional data before planning your installation.
The MB8D technical specification sheet provides every figure an installer or engineer needs to integrate this driver into an enclosure or OEM baffle. The specifications below reflect measurements taken under IEC-standard conditions at 1W/1m.
MB8D Specification Table
| Parameter | Value |
|---|---|
| Cone Diameter | 200 mm (8 in) |
| Max Power | 300 W |
| Nominal RMS Power | 150 W |
| Impedance | 2 Ω |
| Frequency Response | 55 Hz – 4 kHz |
| Cone Material | Ultra-Rigid Carbon Fiber |
| Sensitivity (1W/1m) | 88 dB |
| Mounting Depth | 78 mm |
| Cutout Diameter | 178 mm |
| Voice Coil Diameter | 50 mm |
The low 2-ohm impedance allows the MB8D to extract maximum power from bridged amplifier channels. Pair with a high-current amplifier rated at 4-ohm stereo (which sees 2-ohm per channel bridged) for best results. The 55 Hz lower limit is achievable in a properly tuned sealed or ported enclosure with a minimum internal volume of 12 litres.








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