730ES
| Brand | PhaseTech |
| Manufacturer | Phase Technology Corporation, United Speaker Systems |
| Series | Euro Series |
| Designer | Bill Hecht* |
| Function | Speaker |
| Produced | 198?-19?? |
| Country | United States |
| Form Factor | Floorstanding |
| Signal Path | Passive Hardware |
| Dimensions | 31.8 × 94.6 × 26.9 cm (W × H × D) |
| Weight | 58lbs |
| Frequency Response | 36Hz-20kHz ±3dB |
| Treble | 1" Soft Dome |
| Midrange | 5.25" Cone |
| Bass | 10" Cone |
| Sensitivity | 93dB/W/m |
| Impedance (Nominal) | 8Ω |
| Crossover Frequencies | 550Hz, 3.5kHz |
| Recommended Amplifier Power | 15-120W |
| Power Handling | 120W |
| Enclosure Type | Bass Reflex |