Altec Lansing 1803B
A multi-cellar horn speaker system used in large-scale public audio installations, including the Japan World Exposition.
Overview
The Altec Lansing 1803B is a multi-cellar horn speaker system designed for high-output audio applications. Built for durability and wide dispersion, it was deployed in prominent public venues, notably used with the 290E driver in a speaker tower setup for the water stage in front of the square at the Japan World Exposition. Its large physical size and horn-loaded design reflect its role in delivering powerful, directional sound in outdoor or expansive indoor environments.
Specifications
| Type | Multi-seller horn |
| Directional property | Horizontal: 105 degrees, Vertical: 53 degrees |
| Crossover frequency | 300 Hz or more |
| Compatible Driver Units | 288D, 290E, 730C |
| External dimensions | Width 1,120 x Height 700 x Depth 610 mm |
| Weight | 27kg |
Context
The 1803B was used in combination with the 290E as a speaker tower for the water stage in front of the square at the Japan World Exposition, indicating its role in high-profile, large-scale audio reinforcement during major public events of the era.
Market
Original pricing for the 1803B was ¥219,400 per unit around 1970, later revised to ¥287,800 after 1970.
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