604A
| Brand | Altec, Altec Lansing |
| Manufacturer | Altec Lansing Corporation |
| Series | Duplex |
| Function | Speaker |
| Produced | 1945 |
| Country | United States |
| Form Factor | Part |
| Signal Path | Passive Hardware |
| Dimensions | 38.6 × 38.6 × 28.2 cm (W × H × D) |
| Treble | 2x3 Multicellular Coaxial Horn |
| Midrange/Bass | 15" Paper Cone |
| Impedance (Nominal) | 20Ω |
| Crossover Frequency | 2kHz (Altec N-2000-A) |
| Dispersion (Horizontal) | 60° |
| Dispersion (Vertical) | 40° |
| Compression Diaphragm Material | Aluminum |
| Resonant Frequency (Fs, Woofer) | 38Hz |
| Voice Coil Diameter (Woofer) | 3" |
| Voice Coil Wire Material | Aluminum |
| Voice Coil Wire Geometry | Rectangular |
| Magnet Material | AlNiCo |
| Power Handling | 25W |
| Notes | Crossover revision |