
6.5"/165 mm high-power active underseat subwoofer — 250 W RMS.
The HR6USP is an ESB Hard Rock Series ferrite — conceived and built in Italy as an exercise in obsession.
| Type | Active underseat subwoofer (6.5"/165 mm) |
| Amplifier Class | D |
| Power | 500 W max · 250 W RMS |
| Frequency Response | 20 Hz – 150 Hz |
| S/N Ratio | 91 dB |
| THD | 0.05% |
| Low-Pass Filter | 50 Hz – 150 Hz |
| Bass Boost | 0 – 6 dB |
| Phase | 0 – 180° |
| Inputs | RCA (150 mV–6 V) + speaker (1 V–8 V) |
| Operating Voltage | 14.4 V (10–16 V) |
| Magnet | Ferrite |
| Housing | Aluminum |
| Dimensions | 220 × 190 × 76 mm |
| Brand | Harmony |
| Series | Hard Rock |
| Model | HR 6 US P |
| SKU | HR6USP |
| EAN | 8033373006524 |
Genuine product · Authorized U.S. dealer · Drop-shipped direct