Altec Lansing 290 Series
The Altec Lansing 290 Series is a family of professional loudspeaker drivers from the mid-20th century. The exact production year for the series is undocumented. The drivers were widely used from the 1950s through the 1970s and stayed in service well into the 1980s. They were built tough and sounded clean, and they became staples in theater sound systems, public address (PA) installations, and studio monitoring.
Specifications
| Parameter | Details |
| Power Handling | Varies by model; typically 50–100W RMS for low/mid-frequency drivers |
| Impedance | 8 or 16 ohms (model-dependent) |
| Sensitivity | 105–110 dB (for compression drivers) |
| Magnet Type | Alnico (Aluminum-Nickel-Cobalt) |
| Diaphragm Material | Phenolic resin (in compression drivers) |
| Frequency Response | Model-specific; optimized for midrange and high-frequency reproduction |
| Voice Coil Size | Typically 1.75" to 2" (varies by driver model) |
| Applications | Cinema sound, PA systems, studio monitors, live sound reinforcement |
| Enclosure Compatibility | Often used in horn-loaded cabinets (e.g., Altec 802, 811, A7) |
Historical Context
The 290 Series is part of Altec's lineage of professional audio components for sound reinforcement. Altec was formed from the merger of Altec Service Corporation and Lansing Manufacturing Company, and it became a dominant force in cinema audio and broadcast engineering.
Drivers in the 290 series, such as the 290-8A, 290-4C, and related variants, were frequently paired with Altec's multicellular horns like the 802 and 811. These combinations gave high efficiency and wide dispersion. That suited large venues and movie theaters, where high sound pressure levels (SPL) were needed and modern high-power amplification was not available.
The Alnico magnets gave a warm, dynamic sound that many engineers favored for its musicality and punch. The drivers were also adopted in studio monitor designs and mobile sound systems, and they influenced later professional loudspeaker technologies.
Sound Characteristics
The 290 series drivers are known for high sensitivity and dynamic transient response. Their sound signature is marked by:
- Clear, articulate midrange – ideal for vocal reproduction
- Bright, detailed highs – with a characteristic vintage warmth
- Efficient output – requiring minimal amplifier power
- Potential for harshness – at high volumes, especially in aged units or poorly matched systems
With appropriate horns and crossovers, these drivers give a classic "American" sound - bold, present, and energetic. Vintage audio enthusiasts and restorers often look for it.
Maintenance and Restoration Tips
Because of their age, many 290 series drivers need maintenance or restoration to perform their best:
- Magnet Recharging: Alnico magnets can lose strength over decades. Specialized services can remagnetize them to restore efficiency and output.
- Diaphragm Replacement: Phenolic diaphragms in compression drivers are prone to cracking or warping. Replacing them with modern equivalents (e.g., titanium or polymer) can improve reliability and reduce harshness.
- Reconing: Woofers and midrange drivers often need reconing due to deteriorated surrounds and suspensions. Reputable reconing services can return drivers to like-new condition.
- Terminal and Wiring Inspection: Check for corrosion on input terminals and replace degraded wiring to ensure solid connections.
- Proper Break-In: After restoration, drivers benefit from a gradual break-in period to stabilize mechanical components.
Collectibility and Market Value
The Altec 290 Series has moderate to high collectibility, rated around 7/10, because of its historical significance and its use in well-known sound systems. Market value varies a lot with model, condition, and completeness:
- Non-working or project units: $50–$150
- Restored or tested working units: $200–$400
- Rare variants or matched pairs: $500+
Drivers originally used in Altec's A7 "Voice of the Theater" systems or similar high-end configurations command premium prices among collectors and restorers.
Conclusion
Demand for the 290 Series continues among audiophiles, restorers, and buyers of classic sound reinforcement systems. The drivers are efficient and durably built, and they have a distinctive sound. With proper care and restoration, they can keep working for years to come.
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