Altec Lansing 406-8C (1970)
A 25 cm cone woofer unit released in 1970 for use in the 890C Bolero speaker system.
Overview
The Altec Lansing 406-8C is a 25 cm cone type woofer unit manufactured in 1970. Designed for compact enclosures, it was specifically used in the 890C Bolero speaker model. The driver features a strongly pressed cone with a special shape to maintain low-frequency performance even in smaller cabinet volumes.
Specifications
| Driver size | 25 cm |
| Type | Cone type woofer unit |
| Frequency characteristic | 25 Hz to 4.5 kHz |
| Lowest resonance frequency | 28Hz |
| Impedance | 8 Ω |
| Rated input | 15W |
| Weight | 5.3kg |
Design
The 406-8C uses a strongly pressed cone with a special shape to ensure sufficient low-frequency output in small enclosures. It is typically used with a phase equalizer known as a phase inverter to optimize performance.
Context
The 406-8C was used as the woofer in the Altec Lansing 890C Bolero speaker system, a designed integration that leveraged its compact efficiency and low-end response.
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