P3
| Brand | STR |
| Manufacturer | Sound Technology Research |
| Function | Speaker |
| Produced | 1975 |
| Country | United States |
| Form Factor | Bookshelf / Stand Mounted |
| Signal Path | Analog Hardware |
| Dimensions | 30.5 × 15.2 × 15.2 cm (W × H × D) |
| Frequency Response | 2.5kHz-22kHz ±3dB |
| Driver | Piezoceramic (x3) |
| Energy Conversion | 31% |
| Impedance (Nominal) | 8Ω |
| Dispersion (Horizontal) | 180° |
| Power Handling | 192.8W (100V Peak-to-Peak) |
| Finish | Walnut |
| MSRP (1975) | $99 (Per Pair) |