Altec Lansing 1221A
A stage monitor speaker system designed for directional sound control to minimize microphone feedback
Overview
The Altec Lansing 1221A is a monitor speaker system built for live stage use, specifically tailored for on-stage performers. It features a two-way, two-speaker configuration with a bass reflex enclosure designed to enhance low-frequency output while maintaining tight directional control. Its primary engineering focus was to deliver broadband sound within a narrow dispersion angle, reducing the risk of howling when used with stage microphones.
Specifications
| System type | 2-Way, 2-Speaker, Bass Reflex System |
| Units used | For Low Band: 38 cm Cone Type (417-8H); For High Range: Horn Type (808-8A + 32A) |
| Impedance | 8 Ω |
| Allowable input | 50W; 100W (attenuator "5" position) |
| External dimensions | Width 610 x Height 559 x Depth 710 mm |
| Weight | 29kg |
Design
Designed specifically for on-stage singers and players, the 1221A focuses sound output within a narrow angle to reduce microphone feedback. The enclosure uses a multi-port bass reflex design to enhance low-end response. High-frequency dispersion is managed through a horn-type driver (808-8A + 32A), while the low band uses a 38 cm cone driver (417-8H). The system includes a specially designed network section for optimized crossover performance. The exterior is covered in vinyl leather, and the front grill is removable for maintenance or grille cloth replacement.
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