Altec Lansing 806 Professional Monitor

The Altec Lansing 806 is a studio monitor speaker from the golden era of professional audio. Exact production dates are undocumented. The 806 came out of Altec's line of high-efficiency, horn-loaded loudspeakers built for broadcast, recording studios, and cinema sound reinforcement. Audio engineers and audiophiles both trusted it for its construction and accurate sound.

Specifications

Attribute	Specification
Brand	Altec Lansing
Model	806
Category	Studio Monitor / Professional Audio Speaker
Year of Introduction	Unknown (circa 1970s)
Driver Configuration	Two-way system with compression driver and horn, paired with a low-frequency cone driver
High-Frequency Design	Horn-loaded compression driver for high efficiency and extended response
Low-Frequency Driver	Typically features a 15-inch woofer with field coil or passive magnet (varies by version)
Power Handling	Unknown (designed for moderate to high power in professional settings)
Impedance	Unknown (commonly 16Ω or tapped for constant-voltage systems)
Sensitivity	High (estimated >100 dB/W/m due to horn design)
Frequency Response	Approximately 50 Hz – 15 kHz (varies with enclosure and crossover)
Crossover Network	Passive crossover, often with inductor and capacitor network (age-related degradation possible)
Enclosure Type	Bass-reflex or sealed cabinet with front-firing horn
Dimensions	Varies; typical floor-standing format, approximately 30" H x 18" W x 14" D
Weight	Approximately 60–70 lbs per cabinet

> Note: Exact electrical and acoustic specifications are not widely documented. Performance characteristics are inferred from known Altec designs of the era, including the 604 and 802 series.

Historical Context

Altec Lansing was a dominant force in professional audio through the mid-20th century. The company supplied sound systems for Hollywood theaters, radio stations, and recording studios, and it had a reputation for durability and sonic accuracy. The 806 model was developed as a successor or companion to the Altec 604 Duplex. It brought refinements in horn geometry and driver materials to improve dispersion and reduce distortion.

Unlike consumer speakers, the 806 was built for long-term reliability and consistent performance under demanding conditions. It went into broadcast control rooms, mastering studios, and public address systems where clarity and high output were essential. The horn-loaded design reflects the era's focus on efficiency and directivity control. That let it project sound clearly over distance without excessive amplification.

The 604 series is more famous, but the 806 is still respected and sought after among vintage audio enthusiasts.

Sound Signature

The Altec Lansing 806 has a dynamic, punchy, and highly articulate sound, typical of professional monitor speakers from the 1970s. Key sonic traits include:

Strong midrange presence: The horn-loaded midrange driver ensures vocal and instrumental clarity, making it ideal for critical listening.
High efficiency: Capable of producing high sound pressure levels with relatively low amplifier power.
Extended high-frequency response: Smooth and detailed highs, though not as airy as modern tweeters.
Solid bass foundation: The large woofer provides tight, controlled low end, especially when paired with a properly designed enclosure.

These qualities make the 806 well-suited for jazz, rock, and vocal-centric music genres, where realism and presence are prioritized over deep sub-bass extension.

Maintenance and Restoration Tips

Because of their age, Altec Lansing 806 speakers often need maintenance to restore performance. Common issues and recommended actions include:

1. Foam Surround Degradation

The foam surrounds on the woofer may have dried out or disintegrated.
Solution: Re-foam the driver using a restoration kit or replace with a modern equivalent.

2. Compression Driver Diaphragm Wear

Aluminum diaphragms can fatigue or corrode over time.
Solution: Inspect for tears or distortion; consider reconing or replacement with a refurbished unit.

3. Crossover Component Aging

Paper capacitors and inductors may drift in value or fail.
Solution: Recalculate and replace passive components with modern film capacitors and low-resistance inductors.

4. Grill and Cabinet Care

Original grills may be damaged or missing; cabinets may have scratches or finish wear.
Solution: Clean wood veneer with appropriate polish; consider refinishing or replacing damaged grills.

5. Magnet and Field Coil Testing

Some versions use field coil drivers requiring external power.
Solution: Verify power supply integrity and coil continuity before operation.

> Tip: Be careful when powering vintage speakers. Start at low volume and listen for distortion or mechanical noise.

Collectibility and Market Value

The Altec Lansing 806 holds a collectibility rating of 7/10. It appeals to vintage audio collectors, studio historians, and DIY speaker enthusiasts. It is not as well known as the 604, but it offers similar sonic performance with slightly updated engineering.

Current Market Value (2024)

Pair in good working condition: $200 – $400
Restored or mint original condition: $400 – $600
Non-working or parts-only: $50 – $150

Value depends heavily on originality, completeness, and cosmetic condition. Fully restored units with documented provenance command premium prices, especially in the professional audio restoration community.

Conclusion

The Altec Lansing 806 stands as a testament to the craftsmanship and engineering excellence of 1970s professional audio. While it demands care and potential restoration, its powerful sound, historical significance, and high efficiency make it a rewarding addition to any vintage audio collection. Whether used in a studio setup, home listening environment, or as a restoration project, the 806 continues to deliver the clarity and presence that defined an era of audio innovation.

Market Value

┌──────────────────────────────────────────────────────────────────────────┐
│ ALTEC 806                                                       Nov 2026 │
├──────────────────────────────────────────────────────────────────────────┤
│ High      $700                                    Latest            $700 │
│ Median    $393                                    Trend                — │
│ Low       $164                                    Volume           ~3/mo │
├──────────────────────────────────────────────────────────────────────────┤
│   $700 ┤                                                                 │
│        │                        .                                     . .│
│        │                                                                 │
│   $443 ┤                                              .              . . │
│        │.                  .                      .            . ...     │
│        │          .                        .          .        .         │
│        │               .            .      .          .                  │
│   $100 ┤                                 .                     .         │
│        ├─────────────────────────────────────────────────────────────────│
│    vol │▁         ▁    ▁   ▁    ▁   ▁    ▁ ▃      ▁   █        ▄ ▁▁▁ ▃▁▃▁│
│        └─────────────────────────────────────────────────────────────────│
│         2026-01                      2026-05                      2026-09│
└──────────────────────────────────────────────────────────────────────────┘