U.S. Amps Xterminator XT8
Original price was: $409.99.$209.99Current price is: $209.99.
Xterminator XT8 – 8″ SPL Subwoofer – 1,000W RMS
The Xterminator XT8 is your small-frame, big-output hammer. Designed for tight, violent bass in compact enclosures, the XT8 uses a carbon fiber cone and dust cap, quad spider suspension, and a high-roll stitched surround to keep the 3″ coil under control at extreme power. Perfect for serious daily setups where space is limited but you still want real SPL performance.
| Parameter | Metric Value | Imperial / US Value | Units |
|---|---|---|---|
| Piston Diameter | 153 mm | 6.02 in | Length |
| Fs (Resonant Frequency) | 54.84 Hz | 54.84 Hz | Frequency |
| Re (DC Resistance) | 6.537 Ω | 6.537 Ω | Resistance |
| Zmax (Max Impedance) | 56.3 Ω | 56.3 Ω | Resistance |
| Qms (Mechanical Q) | 5.266 | 5.266 | — |
| Qes (Electrical Q) | 0.6918 | 0.6918 | — |
| Qts (Total Q) | 0.6115 | 0.6115 | — |
| Vas (Equivalent Volume) | 3.17 L | 0.112 ft³ | Volume |
| Le (Voice Coil Inductance) | 4.158 mH | 0.004158 H | Inductance |
| nâ‚€ (Efficiency) | 0.07208 % | 0.0007208 | Ratio |
| SPL (Sensitivity) | 80.68 dB | 80.68 dB | dB (1W/1m) |
| Mms (Moving Mass) | 130.8 g | 0.288 lb | Mass |
| Cms (Compliance) | 6.4e-05 mm/N | 3.66e-04 in/lb | Compliance |
| BL (Motor Strength) | 20.64 T·m | 20.64 T·m | Motor Force |
| K(r) | 10.08 | 10.08 | — |
| X(r) | 0.1709 | 0.1709 | — |
| K(i) | 257 | 257 | — |
| X(i) | -0.1106 | -0.1106 | — |
Description
Xterminator XT8 – 8″ SPL Subwoofer – 1,000W RMS
The Xterminator XT8 is your small-frame, big-output hammer. Designed for tight, violent bass in compact enclosures, the XT8 uses a carbon fiber cone and dust cap, quad spider suspension, and a high-roll stitched surround to keep the 3″ coil under control at extreme power. Perfect for serious daily setups where space is limited but you still want real SPL performance.




