891A Bookshelf
| Brand | Altec, Altec Lansing |
| Manufacturer | Altec Corporation |
| Function | Speaker |
| Produced | 1972-1973 |
| Country | United States |
| Form Factor | Bookshelf / Stand Mounted |
| Signal Path | Passive Hardware |
| Dimensions | 36.8 × 64.8 × 30.7 cm (W × H × D) |
| Weight | 35lbs (Net), 42lbs (Shipped) |
| Treble | 3" Paper Cone |
| Midrange/Bass | 12" Paper Cone |
| Sensitivity (500Hz-3kHz) | 87dB/W/4' |
| Impedance (Nominal) | 8Ω |
| Crossover Frequency | 1.6kHz |
| Power Handling | 50W |
| Enclosure Type | Sealed |
| Finish | Walnut |
| MSRP (1972) | $125 |