Altec 1005B
A multi-cell horn designed for large venue sound reinforcement, part of Altec’s Voice of the Theatre systems
Overview
The Altec 1005B is a multi-cell horn used in professional sound reinforcement systems, particularly in theaters and large halls. It was designed to be paired with specific cabinets like the 825B, using a 3-point mounting system where the horn rests on top. The 1005B can be configured with one or two driver units by changing the throat, supporting models such as the 30210 (single driver) or 30170 (dual drivers). It functions as a bottom horn in multi-component setups, often combined with cabinets like 211 or 815A, woofers such as the 515B, and top horns like the 203B or 1003B.
Specifications
| Product type | Multi-cell horn / Horn |
| Directional property | Horizontal : 100 ° Vertical : 40 degrees |
| Crossover frequency | 500Hz |
| Cell Configuration | 2x5 |
| Applicable throat | 30210 (1 Driver) 30170 (2 Drivers) |
| External dimensions | Width 762x Height 330x Depth 438 mm |
Design
The 1005B was engineered for use in theaters, halls, and outdoor sound systems, offering adjustable diffusion characteristics through interchangeable throats. It is part of a six-model Multi-Cell Horn Series, allowing system designers to select horns based on coverage needs. Its 3-point mounting system integrates directly with the 825B cabinet, ensuring stable and precise alignment in large installations.
Context
The 1005B is a component of Altec’s "Voice of the Theatre" (VOTT) speaker systems, which were introduced in the late 1930s and became the industry standard for cinema and live sound. It is specifically used with drivers like the 288C in A5 VOTT system restorations. In full-range setups, the 1005B typically handles mid and high frequencies, mounted at the bottom of the cabinet stack to ensure even sound distribution across audiences of 1,000 to 1,500 people per system, with multiple systems used for larger venues.
Market
The Altec 1005B is highly sought after by vintage audio enthusiasts, professional restorers, and DIY speaker builders, with a collectibility rating of 8/10. Due to their age, most surviving units require inspection or restoration. A pair was listed for $1365.00 in 2023, reflecting its rarity and demand.
eBay Listings
As an eBay Partner, we earn from qualifying purchases. This helps support our independent vintage technology research.