Altec Lansing Milestone 950
A professional-grade bookshelf speaker system using a coaxial 2-way design with Duplex heritage and a distinctive flower-petal horn.
Overview
The Altec Lansing Milestone 950 is a high-performance bookshelf-type speaker system built around the company's professional 950-8B coaxial driver unit. Released around 1999, it combines a 15-inch woofer with a 1-inch compression driver mounted on a uniquely shaped horn, delivering wide dispersion and high sound pressure levels. Designed for precision and durability, it reflects Altec Lansing’s legacy in professional audio engineering.
Specifications
| Unit | 15 inch Coaxial Type 2-way (950-8B) |
| Woofer | 15 inch (38 cm) cone type |
| High frequency driver | 1 inch compression driver + horn |
| Impedance | 8 Ω |
| Playback frequency band | 40 Hz to 20 kHz |
| Crossover frequency | 1.5kHz |
| Sound pressure level | 99dB-SPL/W/m |
| Allowable input | 300W AES / + 6 dB crest factor 1200W (peak) |
| External dimensions | Width 460x Height 900x Depth 500 mm |
| Weight | 41kg |
| Original price | ¥ 350,000 (1 unit, around 1999) |
Design
The Milestone 950 uses the 950-8B coaxial 2-way unit, a direct descendant of Altec Lansing's Duplex technology. The unit integrates a 15-inch woofer with a heat-resistant voice coil and a central throat housing a 1-inch compression driver behind a flower-petal horn. This horn provides a nominal 90-degree dispersion in both horizontal and vertical planes, creating a nearly square directional pattern for consistent sound quality across a wide listening area. The enclosure is a bass-reflex design constructed from 18 mm birch veneer, selected for strength and acoustic performance, and was developed using computer simulation based on Thiele & Small parameters alongside input from experienced audio engineers.
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