Altec Lansing 807-8B Compression Driver

The Altec Lansing 807-8B is a high-efficiency compression driver from mid-20th-century professional audio. It was a staple in sound reinforcement, broadcast and cinema work. Vintage audio enthusiasts and DIY speaker builders still go looking for it.

Specifications

Historical Context

Altec introduced the 807-8B in the 1950s and produced it through the 1970s. It went into the company's "Voice of the Theatre" (VOTT) speaker systems, particularly the A-7 and 1994 series. Those systems became the standard in movie theaters, live sound and recording studios because of their high output and faithful reproduction.

The 807-8B evolved from earlier 807 models. The -8B variant has an aluminum diaphragm, which gave better durability and transient response than the original phenolic versions. Its 110 dB sensitivity let it reach high sound pressure levels on relatively low amplifier power, which suited the tube amplifier era.

Altec's engineering and the driver's wide adoption in professional environments made the 807-8B a foundational driver in audio history. Modern high-efficiency speaker designs still show its influence.

Sound Signature

The 807-8B sounds clear, articulate and dynamic, with a strong midrange presence. It has a slight upper-midrange emphasis, which gives it a "forward" character that cuts through in live and cinematic applications. Paired with a properly matched multicellular horn, it gives wide dispersion and smooth high-frequency response.

However, due to its high efficiency and brightness, the 807-8B can sound harsh or fatiguing if used with incompatible horns or without proper crossover integration. Careful system design is essential to harness its strengths while mitigating potential tonal imbalances.

Maintenance and Restoration Tips

Given their age, surviving 807-8B units often require inspection or restoration:

• Diaphragm Condition: Check for tears, warping, or corrosion. Aluminum diaphragms can fatigue over time; replacement with period-correct or modern equivalents (e.g., Omega or P-Audio) is common.
• Terminals and Wiring: Clean oxidation from terminals and ensure secure connections. Consider replacing brittle or degraded lead wires.
• Magnet Strength: Over decades, the Alnico magnet may weaken. Re-magnetization by a specialist can restore performance.
• Throat Gasket: Replace hardened or missing gaskets to ensure an airtight seal with the horn.
• Cleaning: Use mild solvents on the cast housing; avoid abrasive materials that could damage original finishes.

Restoration should preserve originality where possible, especially for collectors. Units with original aluminum diaphragms and factory markings command higher value.

Market Value and Collectibility

The Altec 807-8B has strong appeal among vintage audio collectors and horn speaker enthusiasts. In working condition, prices typically range from $150 to $400 per driver. Units with original aluminum diaphragms, minimal corrosion and complete hardware go for more.

Collectibility is rated 8/10 because of its historical significance, sonic reputation and continued use in high-efficiency speaker builds. Drivers from the 1950s and early 1960s, particularly those with phenolic diaphragms, are especially prized.

Conclusion

The Altec Lansing 807-8B was a workhorse in professional audio for decades. Today it is still used for restorations, vintage systems and high-fidelity horn projects.

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