Altec Lansing 9849-8A
The Altec Lansing 9849-8A is a professional studio monitor from the 1970s, built for critical listening in broadcast and recording rooms. It belongs to Altec's 9849 series and uses horn-loaded design. It has high sensitivity, clear dynamics and high power handling. Mastering studios and radio stations used it widely in its day. Today people still look for it because of its transparent midrange and efficient performance.
Specifications
| Parameter | Specification |
| Model | Altec Lansing 9849-8A |
| Year of Production | 1970s |
| Configuration | 3-way, passive crossover |
| Low-Frequency Drivers | Dual 12-inch woofers |
| High-Frequency Section | 811B constant-directivity horn |
| Compression Driver | 806A |
| Power Handling | 100W RMS (2 channels) |
| Nominal Impedance | 8 ohms |
| Sensitivity | 98 dB (1W/1m) |
| Crossover Type | Passive, internal |
| High-Frequency Control | Built-in attenuator for HF adjustment |
| Enclosure Type | Large ported cabinet |
| Dimensions (H×W×D) | Approx. 36" × 18" × 16" (varies by cabinet) |
| Weight | Approx. 85 lbs per cabinet |
Historical Context
The 9849-8A came out when broadcast and recording studios wanted monitors with high output, low distortion and consistent dispersion. It is a refined version of the earlier 9849 models. The driver materials and crossover design were improved, and the horn-loaded layout of Altec's professional monitors stayed.
Altec was known for cinema and studio sound. It put its compression drivers and constant-directivity horns into monitors meant for long listening sessions with minimal fatigue. The 811B horn paired with the 806A driver gave exceptional high-frequency clarity and dispersion control, which made the 9849-8A a good fit for critical audio evaluation.
You found these speakers in mastering facilities, radio stations and post-production houses throughout the 1970s and into the 1980s. Legendary engineers and studios used them, and that cemented their reputation as reference-grade monitors of their time.
Sound Signature
The 9849-8A sounds dynamic, transparent and highly efficient. The horn-loaded high-frequency section gives detailed, articulate treble with excellent projection. The dual 12-inch woofers give punchy, well-defined bass. By modern standards the bass does not reach the deepest sub-bass frequencies.
The midrange is the standout. It is clear, forward and natural, which suits vocals and instruments. Sensitivity is high at 98 dB, so the speakers reach high sound pressure levels on relatively little amplifier power. That is a hallmark of Altec's design philosophy.
Because of their studio-monitor heritage, the 9849-8A has a fairly neutral tonal balance. There is a slight emphasis on presence in the upper mids, which helps in spotting flaws in recordings.
Maintenance and Restoration Tips
These are vintage professional monitors, so Altec 9849-8A units often need maintenance to restore good performance:
- Crossover Capacitors: The passive crossover network commonly uses aging electrolytic and paper-in-oil capacitors that may drift in value or fail. Replacing these with modern film capacitors improves reliability and sound quality.
- Woofers: The foam surrounds on the 12-inch woofers are prone to deterioration after 40+ years. Re-foaming or reconing by a specialist is recommended for units showing sagging or disintegration.
- Compression Driver (806A): The titanium diaphragm in the 806A driver can develop tears or lose damping over time. Inspect for rattles or distortion at high volumes. Rebuilding or replacing with a refurbished unit may be necessary.
- Horn (811B): Check for dents or damage to the horn throat and mouth, as these can affect dispersion and frequency response.
- Cabinets: The large ported enclosures are typically made of multi-ply plywood. Look for loose joints, veneer damage, or port blockages. Reinforce if necessary.
- Grilles and Hardware: Original grilles may be missing or damaged. Replacement or custom fabrication can restore aesthetics and protect drivers.
Regular inspection and conservative restoration will preserve both performance and collectibility. Keep originality wherever possible.
Market Value and Collectibility
The Altec Lansing 9849-8A has steady demand among vintage audio enthusiasts and studio gear collectors. In working condition with original components, a pair typically sells for $800 to $1,500. Fully restored or exceptionally well-preserved units go for more.
Collectibility is rated 7/10 because of its professional pedigree, historical significance and lasting sonic reputation. It is not as common as the Altec 604 or 605, but the 9849-8A is respected for its superior build quality and studio-grade performance.
Owners of vintage tube amplifiers especially prize these monitors. Their high sensitivity and 8-ohm load make them a good match for low-power, high-fidelity amplification.
Conclusion
The Altec Lansing 9849-8A is a 1970s professional monitor that is efficient and sonically transparent. Age-related wear means it needs care, and a well-maintained pair gives vintage sound with studio accuracy.
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