Type 18
| Brand | SEAS |
| Manufacturer | SEAS Fabrikker A/S |
| Function | Speaker (Kit) |
| Country | Norway |
| Form Factor | Bookshelf / Stand Mounted |
| Signal Path | Passive Hardware |
| Frequency Response | 35Hz-20kHz |
| Treble | 1.5" Dome |
| Midrange/Bass | 8" Paper Cone (SEAS 21 TV-EW) |
| Sensitivity | 86dB/W/m |
| Operating Power (96dB, DIN 45500) | 10W |
| Impedance (Nominal) | 4Ω or 8Ω (Kit option) |
| Crossover Frequency | 1.5kHz (SEAS D 010) |
| Power Handling (Nominal, DIN 45573) | 30W |
| Power Handling (Music, DIN 45500) | 60W |
| Enclosure Type | Sealed |
| Enclosure Volume | 20l |