1204B (Rev. 2)
| Brand | Altec, Altec Lansing |
| Manufacturer | Altec Lansing Corporation |
| Series | Voice of the Theatre |
| Function | Speaker |
| Produced | 1975 |
| Country | United States |
| Form Factor | Floorstanding |
| Signal Path | Passive Hardware |
| Dimensions | 71.1 × 114.3 × 69.9 cm (W × H × D) |
| Weight | 120lbs |
| Treble | 10.6"x25.3" Sectoral Horn (Altec 511B, Altec 808-8A) |
| Midrange/Bass | 15" Paper Cone (Altec 421A) |
| Impedance (Nominal) | 8Ω |
| Crossover Frequency | 800Hz (Altec N809) |
| Power Handling | 50W |
| Power Handling (Peak) | 100W |
| Enclosure Type | Bass Reflex |
| Enclosure Construction | 0.75" Plywood |
| Finish | Black Vinyl, Vinyl Woodgrain |
| Notes | Minor cosmetic changes, change to branding. |