Altec Lansing 288-16K High-Frequency Compression Driver

The Altec Lansing 288-16K is a high-frequency compression driver designed in the 1950s and produced through the 1970s. It was used in studio monitoring, theater sound reinforcement, and high-fidelity home audio systems. People know it for its dynamic clarity and heavy construction, and restorers still hunt for it.

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 key part of Altec's "Voice of the Theatre" speaker systems, which dominated professional sound in cinemas, broadcast studios, and live venues during the mid-20th century. In the 288 series, the -16K variant meant a 16-ohm impedance and a 1.75-inch throat. That made it a good match for Altec's high-efficiency horn designs like the 811 and 511.

Early units had a phenolic diaphragm. Later production moved to aluminum, which gave better transient response and durability. Engineers and audiophiles praised the 288-16K for a vivid, "live" sound with realism and presence.

The 288-16K went into systems such as the Altec A-7 and 604, and it helped shape the sound of classic recordings and theatrical audio. Modern studio monitor designs still try to emulate its sonic characteristics.

Sound Signature

The 288-16K gives a clear, detailed, 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, so it avoids harshness when paired with appropriate crossovers and horns.

It is highly sensitive and bright, and that has a downside. The 288-16K can sound overly aggressive with modern amplifiers or poorly designed crossover networks. It works best with period-correct horns and passive networks that tame the upper mids and highs.

Maintenance and Restoration Tips

A 288-16K needs attention to preservation and the occasional restoration because of 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 because of its historical importance, build quality, and 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 they are needed for functional restoration. Documentation, original packaging, or theater/studio provenance can significantly raise value.

Conclusion

The Altec Lansing 288-16K is a benchmark high-frequency driver from the analog era. Its efficiency, clarity, and durability made it a favorite in professional audio for decades. Today it is still a prized component for vintage audio restoration.