Altec Lansing 1005 Multicellular Horn

The Altec Lansing 1005 is a legendary multicellular horn designed for high-performance audio reproduction in both professional and high-fidelity consumer environments. Renowned for its precise dispersion control and exceptional efficiency, the 1005 was a staple in mid-20th century sound reinforcement systems and remains a sought-after component among vintage audio enthusiasts and restorers.

Specifications

Feature	Specification
Model	Lansing 1005
Brand	Altec
Year of Introduction	Circa 1950s (exact production year unknown)
Impedance	16 ohms
Sensitivity	Approximately 110 dB (1W/1m)
Compatible Drivers	Altec 288, 290 series compression drivers
Horn Type	Multicellular
Construction	Cast aluminum
Frequency Response	Optimized for high-frequency reproduction
Dispersion	Uniform high-frequency coverage
Intended Use	Professional sound, studio monitoring, home hi-fi

Historical Context

The Altec Lansing 1005 was developed as part of Altec’s broader "Voice of the Theatre" speaker system lineup, which became an industry standard in movie theaters, broadcast studios, and public address systems during the 1950s through the 1970s. Its multicellular design was engineered to provide controlled, even dispersion of high frequencies—critical for consistent sound coverage in large venues.

Often paired with Altec’s 288 or 290 series compression drivers, the 1005 delivered a clarity and dynamic range that set a benchmark in audio engineering. Its use extended beyond commercial installations into high-end home audio systems, where audiophiles prized its ability to reproduce detailed, lifelike sound with remarkable efficiency.

The 1005 exemplifies Altec’s commitment to robust engineering and acoustic precision, contributing significantly to the brand’s reputation for durability and sonic excellence during the golden era of analog audio.

Sound Signature

The Altec 1005 is celebrated for its clear, articulate high-frequency response with a smooth yet dynamic character typical of classic Altec designs. The multicellular throat design minimizes distortion and provides even dispersion, resulting in a spacious and natural soundstage. When paired with a suitable driver, it delivers punchy transients and excellent intelligibility—ideal for both music and voice reproduction.

Its high sensitivity (approximately 110 dB) allows for powerful output with minimal amplifier power, making it a favorite in passive high-fidelity systems and vintage restoration projects.

Maintenance and Restoration Tips

Due to its age, proper care is essential to preserve or restore the Altec Lansing 1005:

Driver Inspection: Check the compression driver (e.g., 288/290 series) for diaphragm integrity. Replacing deteriorated Mylar domes or voice coils may be necessary for optimal performance.
Horn Surface: Inspect the cast aluminum horn for corrosion or pitting. Clean gently with a non-abrasive aluminum polish to maintain structural and acoustic properties.
Mounting Hardware: Verify that mounting brackets and fasteners are secure and free from rust. Replace worn hardware to ensure safe installation.
Sealing: Ensure an airtight seal between the horn and driver. Use high-temperature gasket material or silicone if needed to prevent acoustic leakage.
Storage: Store in a dry, temperature-stable environment to prevent moisture damage and oxidation.

Restored units perform exceptionally well in vintage audio setups, often rivaling modern horns in clarity and presence when properly maintained.

Collectibility and Market Value

The Altec Lansing 1005 holds a collectibility rating of 7/10, appealing to professional audio historians, theater sound restorers, and high-fidelity collectors. Its value ranges from $200 to $500, depending on condition, originality, and whether it includes a matching compression driver.

Units with original finishes, intact labeling, and minimal casting flaws command higher prices. Complete systems (horn + driver + crossover) are especially desirable for full-range vintage speaker builds.

While not as rare as some Altec models, the 1005 remains a cornerstone of classic horn-loaded design and a testament to mid-century American audio innovation.