ALTEC LANSING 311-60
* Release date unknown
¥ 68,800 (1 unit, around 1970)
¥ 79,100 (1 unit, after 1970 price revision)
¥ 74,000 (1 unit, around 1976)
Commentary
A centrifugal horn developed for large sound reproduction.
It is designed to achieve maximum effect when wide sound pressure distribution characteristics are required in a wide listening room in a home, a hall, outdoors, etc.
Driver units such as 291-16A, 290E and 288D are used in combination.
The difference between 311 ° - 60 and 311 ° - 90 is the directional which is 60 ° and 90 ° in the horizontal direction respectively.
Model Rating
| Type | Cetoral horn |
| Directional property | Horizontal : 60 degrees Vertical : 40 degrees |
| Crossover frequency | 300 Hz or more |
| Compatible Driver Unit | 288C, 288D, 290E, 291-16A |
| External dimensions | Width 510x Height 267x Depth 535 mm |
| Weight | 8.9kg |