Altec Lansing 802-8T Compression Driver
The Altec Lansing 802-8T is a high-efficiency compression driver. It was produced from the 1950s through the 1970s and was used in cinema sound reinforcement, public address systems, and high-fidelity applications. It is known for its sturdy construction and exceptional sensitivity, and vintage audio enthusiasts and loudspeaker restorers still look for it.
Specifications
| Parameter | Specification |
| Model | Altec Lansing 802-8T |
| Year of Production | 1950s–1970s |
| Power Handling | 20W RMS, 40W peak (per driver) |
| Impedance | 16 ohms |
| Sensitivity | 110 dB (1W/1m) |
| Diaphragm Material | 2-inch aluminum (early), phenolic (later) |
| Phase Plug Design | Radial phase plug |
| Horn Compatibility | Multicellular and exponential horns |
| Voice Coil Configuration | Single channel per driver |
| Field-Serviceable Parts | Replaceable diaphragm assembly |
| Weight | 3.2 lbs (1.45 kg) |
Historical Significance
The Altec 802-8T traces back to Western Electric's compression driver designs of the 1930s and 1940s. It is a refined version of the 802 series, built for high output and reliability in demanding environments. It was a key part of Altec's "Voice of the Theatre" (VOTT) loudspeaker systems, which became the standard in movie theaters and live sound venues across North America.
High sensitivity and extended high-frequency response made it a good match for multicellular horns, and it gave clear, dynamic sound even in large spaces. The 802-8T was also widely used in broadcast studios, military communications, and early rock and roll PA systems. It is described as one of the most influential drivers of the 20th century.
Sound Signature
The 802-8T sounds bright and articulate, with strong upper-midrange presence and excellent transient response. Its high efficiency gives powerful output from minimal amplifier power, which suited the passive crossover designs of the era.
The strong high-frequency energy can turn harsh if the driver isn't mated with a suitable horn and crossover network. Set up correctly, especially in original VOTT configurations, the 802-8T offers remarkable clarity, detail, and dynamic punch that remains competitive with modern drivers in vintage-optimized systems.
Common Issues and Maintenance Tips
The design is rugged, but the 802-8T still needs careful maintenance to perform well in modern setups:
- Diaphragm Degradation: Early aluminum diaphragms are prone to fatigue, micro-cracking, or tearing over decades of use. Later phenolic diaphragms are more durable but can still degrade. Inspect regularly and replace if damaged.
- Corrosion: Aluminum diaphragms may corrode in humid environments. Store in dry conditions and consider protective coatings if used in challenging climates.
- Magnet Demagnetization: Older units may suffer from weakened magnetic fields, reducing efficiency. Re-magnetization services are available from specialty audio shops.
- Gasket Sealing: The diaphragm assembly relies on precise sealing. Old or hardened gaskets should be replaced to maintain acoustic integrity and prevent air leaks.
- Crossover Compatibility: Original crossovers may use outdated components. Modern rebuilds with film capacitors and proper inductors significantly improve reliability and sound quality.
- Horn Matching: For optimal performance, pair with original Altec multicellular horns (e.g., 811, 817) or compatible modern equivalents.
Collectibility and Market Value
The Altec 802-8T ranks 8/10 in collectibility because of its historical importance, widespread use, and lasting performance. Units with original phenolic diaphragms and clean coils command higher prices. Fully restored drivers with verified performance are especially desirable.
As of 2024, market values range from $150 to $400 per driver, depending on condition, originality, and diaphragm type. Rare variants or those with documented theater use may go above that range among collectors.
Conclusion
The 802-8T is a milestone in audio engineering history. Its mix of efficiency, durability, and sonic character continues to inspire modern reproductions and vintage restorations. It is used in restored Voice of the Theatre systems and in high-efficiency home audio setups.
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