Kit 303
| Brand | SEAS |
| Manufacturer | SEAS Fabrikker A/S |
| Series | Professional Sound |
| Function | Speaker (Kit) |
| Country | Norway |
| Form Factor | Bookshelf / Stand Mounted |
| Signal Path | Passive Hardware |
| Frequency Response | 35Hz-20kHz |
| Treble | 1" Dome (SEAS 86H) |
| Midrange | 4" Paper Cone (SEAS 10FM) |
| Bass | 10" Paper Cone (SEAS 25F-EWX) |
| Sensitivity | 90dB/W/m |
| Operating Power (DIN 45500) | 4W |
| Impedance (Nominal) | 4Ω or 8Ω (User Selectable) |
| Crossover Frequencies | 800Hz, 4kHz (SEAS D 036) |
| Power Handling (Nominal, DIN 45573) | 50W |
| Power Handling (Music, DIN 45500) | 80W |
| Enclosure Type | Sealed |
| Enclosure Volume | 30l |
| Finish | Black, Palisander, Teak, Walnut (Cabinet Optional) |