Duplex
| Brand | Altec, Lansing, Altec Lansing |
| Manufacturer | Altec Lansing Corporation |
| Function | Speaker |
| Produced | 1944 |
| Country | United States |
| Form Factor | Floorstanding |
| Signal Path | Analog Hardware |
| Dimensions | 76.2 × 96.5 × 40.6 cm (W × H × D) |
| Weight | 150lbs (Shipped) |
| Driver | 15" Multicellular Coaxial Horn/Paper Cone (Altec 604) |
| Impedance (Nominal) | 20Ω |
| Crossover Frequency | 1.2kHz |
| Dispersion (Horizontal) | 60° |
| Dispersion (Vertical) | 40° |
| Power Handling | 25W |