KSC-3
| Brand | KSC |
| Manufacturer | KSC Systems, Inc. |
| Function | Speaker (Omnidirectional) |
| Produced | 1965 |
| Country | United States |
| Form Factor | Floorstanding |
| Signal Path | Passive Hardware |
| Dimensions | 33 × 76.2 × 34.3 cm (W × H × D) |
| Weight | 43lbs |
| Frequency Response | 35Hz-20kHz ±2dB |
| Treble | 3.5" Paper Cone (SEAS) |
| Midrange | 6" Paper Cone (SEAS) |
| Bass | 10" Paper Cone (SEAS) |
| Impedance (Nominal) | 8Ω |
| Crossover Frequencies | 750Hz, 3kHz |
| Finish | Walnut |
| MSRP (1965) | $195.95 |