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Model: HDX4.2-18D2 Sold as: Each
The SoundQubed HDX4.2-18D2 is a 18-inch HDX4.2 subwoofer with dual 2-ohm voice coils. It is rated for 4,000 W RMS and 8,000 W peak power, with a 4-inch voice coil and 23 mm one-way Xmax.
| Woofer size | 18 inches |
|---|---|
| Voice coil impedance | Dual 2 ohms |
| RMS power handling | 4000 W |
| Peak power handling | 8000 W |
| Magnet weight | 402 oz |
| Voice coil diameter | 4 inches |
| Voice coil length | 70 mm |
| Resonant frequency (Fs) | 31.7 Hz |
| Sensitivity (1 W / 1 m) | 90.4 dB |
| Xmax (one way) | 23 mm |
| Xmech (one way) | 47 mm |
| Overall diameter | 465 mm / 18.3 inches |
| Cutout diameter | 425 mm / 16.73 inches |
| Mounting depth | 288 mm / 11.34 inches |
| Suggested sealed enclosure | 3–5.75 ft³ |
| Suggested ported enclosure | 5–7 ft³ |
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