Altec Lansing 288-16K High-Frequency Compression Driver

The Altec Lansing 288-16K is a legendary high-frequency compression driver that epitomizes the golden age of professional audio. Designed in the 1950s and produced through the 1970s, this driver became a cornerstone in studio monitoring, theater sound reinforcement, and high-fidelity home audio systems. Recognized for its dynamic clarity and robust construction, the 288-16K remains a sought-after component among vintage audio enthusiasts and restorers.

Specifications

Parameter	Specification
Model	288-16K
Brand	Altec Lansing
Year of Production	1950s–1970s
Impedance	16 ohms
Power Handling	Designed for 20–50W amplifiers (horn-loaded)
Sensitivity	110–112 dB (1W/1m)
Diaphragm	1.75-inch aluminum (later models)
Throat Size	1.75-inch
Frequency Response	1.5 kHz – 15 kHz (typical, with horn)
Horn Compatibility	Altec 811, 511, and other 1.75-inch throat horns
Mounting	4-screw flange (standard Altec pattern)

Historical Significance

The Altec 288-16K was a critical component in Altec's "Voice of the Theatre" speaker systems, which dominated professional sound in cinemas, broadcast studios, and live venues during the mid-20th century. As part of the 288 series, the -16K variant denoted a 16-ohm impedance and a 1.75-inch throat, making it ideal for integration with Altec's high-efficiency horn designs like the 811 and 511.

Originally equipped with a phenolic diaphragm, later production models transitioned to aluminum, offering improved transient response and durability. This evolution helped solidify the 288-16K’s reputation for delivering a vivid, "live" sound that engineers and audiophiles praised for its realism and presence.

Used in iconic systems such as the Altec A-7 and 604, the 288-16K played a foundational role in shaping the sound of classic recordings and theatrical audio. Its influence extends into modern studio monitor design, where its sonic characteristics are still emulated.

Sound Signature

The 288-16K delivers a clear, detailed, and dynamic high-frequency response with a strong midrange presence. Its sound is often described as "forward" and "engaging," with excellent transient attack and low distortion when properly horn-loaded. The roll-off above 15 kHz is smooth, avoiding harshness when paired with appropriate crossovers and horns.

However, due to its high sensitivity and bright character, the 288-16K can sound overly aggressive if mismatched with modern amplifiers or poorly designed crossover networks. Optimal performance is achieved when used with period-correct horns and passive networks that tame the upper mids and highs.

Maintenance and Restoration Tips

Owning a 288-16K requires attention to preservation and occasional restoration due to its age. Common issues include:

Diaphragm degradation: Early phenolic diaphragms are prone to cracking or warping. Aluminum diaphragms are more durable but can still fatigue.
Magnet weakening: Over decades, the field strength of the magnet may diminish. Re-magnetization by a specialist can restore performance.
Corrosion: Terminals and pole pieces may corrode, especially in humid environments. Clean with electrical contact cleaner and protect with dielectric grease.
Gasket deterioration: The sealing gasket between the driver and horn often perishes. Replace with a custom-cut neoprene or silicone gasket for proper acoustic coupling.
Crossover compatibility: Use with vintage-style passive crossovers or active filtering to prevent overdriving the driver.

When restoring, avoid modern high-power amplifiers. The 288-16K performs best with moderate power (20–30W) from tube or early solid-state amplifiers that match its sensitivity and impedance.

Collectibility and Market Value

The Altec 288-16K ranks 8/10 in collectibility due to its historical importance, build quality, and enduring sonic reputation. Drivers in working condition with original aluminum diaphragms command higher prices, especially when paired with original horns.

As of recent market trends, individual 288-16K drivers sell for $300 to $800, depending on condition, provenance, and diaphragm type. Complete horn systems (e.g., 811 with driver) can exceed $1,500 in excellent condition.

Collectors value originality, so avoid non-OEM modifications unless for functional restoration. Documentation, original packaging, or theater/studio provenance can significantly enhance value.

Conclusion

The Altec Lansing 288-16K stands as a benchmark in high-frequency driver design from the analog era. Its combination of efficiency, clarity, and durability made it a favorite in professional audio for decades. Today, it remains a prized component for vintage audio restoration, offering a direct link to the sonic character of classic recordings and theater sound. With proper care and matching, the 288-16K continues to deliver a compelling and authentic listening experience.