Altec Lansing N801-8A (1970)
A passive LC crossover network designed for 2-way systems, released in 1970 and optimized for use with Altec 811B horns.
Overview
The Altec Lansing N801-8A is a passive crossover network introduced in 1970 for professional audio applications. It is designed for 2-way speaker systems and uses an LC-type circuit to split the audio signal at 800Hz with a 12dB/octave slope. Built to integrate with Altec 811B horns, it features a front-panel attenuator adjustable from 1 dB to 10 dB for precise high-frequency level control. With an 8 Ω input impedance and 100W power handling, it was used in systems such as the A7-8, supporting Altec’s modular approach to speaker design.
Specifications
| Production years | Released in 1970 |
| Type | LC type for 2-way |
| Allowable input | 100W |
| Input impedance | 8 Ω |
| Attenuator | 1 dB to 10 dB |
| Crossover frequency | 800Hz |
| Attenuation | 12dB/oct |
| External dimensions | Width 122 x Height 140 x Depth 143 mm |
| Weight | 1.6kg |
| Original price (1970) | ¥ 39,900 (1 unit) |
| Original price (around 1976) | ¥ 33,700 (1 unit) |
Design
The N801-8A uses an LC-type circuit for 2-way crossover operation and is specifically designed for use with Altec 811B horns. The front panel includes an attenuator capable of adjusting signal levels from 1 dB to 10 dB, allowing fine-tuned control over the high-frequency output.
Context
This network was used in Altec speaker systems such as the A7-8, supporting the company’s modular approach to professional sound reinforcement and studio monitoring setups.
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