Altec Lansing 419A (1968)
A 30 cm full-range speaker unit with a bi-flex cone design, released in 1968.
Overview
The Altec Lansing 419A is a 30 cm special cone type full-range speaker unit introduced in 1968. It was designed to deliver wide-frequency audio reproduction with reduced distortion across low, mid, and high ranges. Unlike multi-driver systems, the 419A integrates multiple cone elements into a single unit to handle the entire audible spectrum. It uses a lightweight alloy dome radiator at the center of the cone to extend high-frequency response, while the main cone structure is engineered with varying stiffness zones to improve linearity.
Specifications
| Driver size | 30 cm |
| Type | Special cone type full-range speaker |
| Frequency characteristic | 30 Hz to 15 kHz |
| Lowest resonance frequency | 32Hz |
| Impedance | 8 Ω |
| Allowable input | 50W |
| Magnet used | 4 kg Alnico V |
| Weight | 6.75kg |
Design
The 419A is known as a bi-flex speaker, featuring a large cone and a smaller cone with differing stiffness, combined into a multi-damped corrugated structure. This design reduces distortion in the ultra-low, mid-low, and mid-frequency ranges. A dome radiator made of light alloy is mounted at the center of the cone and handles high-frequency output up to 15 kHz. The unit includes a strong aluminum die-cast frame to minimize distortion caused by aging and to suppress resonance from cone vibrations.
Market
The Altec Lansing 419A was originally priced at ¥46,800 per unit around 1970.
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