Altec Lansing 311-60
A centrifugal horn designed for wide sound distribution in large spaces, compatible with select Altec driver units
Overview
The Altec Lansing 311-60 is a centrifugal horn engineered for large-scale sound reproduction. Manufactured by Altec Lansing, it was intended for installations where broad sound coverage is critical—such as in large rooms, halls, or outdoor environments. Its design prioritizes wide sound pressure distribution, making it suitable for both residential and public spaces requiring even audio dispersion.
Specifications
| Type | Centrifugal horn |
| Directional property | Horizontal: 60 degrees, Vertical: 40 degrees |
| Crossover frequency | 300 Hz or more |
| Compatible Driver Units | 288C, 288D, 290E, 291-16A |
| External dimensions | Width 510 x Height 267 x Depth 535 mm |
| Weight | 8.9kg |
| Original price | ¥74,000 (1 unit, around 1976) |
Design
The 311-60 is a centrifugal horn developed specifically for applications demanding wide sound dispersion. It achieves optimal performance when paired with compatible driver units such as the 291-16A, 290E, or 288D. The horn's directional output is 60 degrees horizontally and 40 degrees vertically, distinguishing it from the 311-90 model, which offers a wider 90-degree horizontal pattern.
eBay Listings
As an eBay Partner, we earn from qualifying purchases. This helps support our independent vintage technology research.