Altec Lansing 414-8B (16B) (1970)
A 30 cm cone-type woofer unit released in 1970 with a frequency response down to 40 Hz and rated for 25W input.
Overview
The Altec Lansing 414-8B (also known as 16B) is a low-frequency loudspeaker designed for professional and high-fidelity audio systems. Manufactured by Altec Lansing and released in 1970, it features a 30 cm diameter cone and is built to deliver strong bass performance even in cabinets with relatively small internal volumes. Its design allows for a high crossover point—up to 2 kHz to 3 kHz—making it suitable for integration with midrange and high-frequency drivers in multi-way speaker systems.
Specifications
| Frequency characteristic/response | 40 Hz - 4 kHz |
| Lowest resonance frequency | 30Hz |
| Impedance | 8 Ω |
| Rated input | 25W |
| Magnetic flux density | 10,000 gauss |
| Recommended crossover frequency | 1.5kHz |
| External dimensions | Diameter 314 x Depth 150 mm |
| Weight | 6.8kg |
| Unit price | ¥ 44,000 (1 unit, released in 1970) |
Design
The 414-8B is a standard 30 cm diameter cone-type woofer with an aluminum die-cast frame, contributing to structural rigidity and heat dissipation. It is engineered to produce full, blooming bass even in compact enclosures. Despite its size, the unit achieves a relatively high upper frequency limit, enabling flexible crossover options around 1.5 kHz, and potentially as high as 2–3 kHz when system design permits.
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