Altec Lansing 1220AC
A 10-channel PA mixing console with built-in reverb, limiter, and switchable electronic crossover
Overview
The Altec Lansing 1220AC is a professional mixing console designed for public address applications. Built with robust construction and high electrical performance, it delivers studio-grade signal handling in a portable format suited for live sound environments. The unit features 10 input channels, multiple output configurations, including full-range stereo and split high/low frequency outputs via an internal crossover. Its design supports both desktop use, with a detachable console section and removable steel feet stored within the case.
Specifications
| Input | 10 channels, 150 Ω |
| Gain | 86dB |
| Output | 21 dBm maximum |
| Output types | Full-range stereo output and 800 Hz and 500 Hz switchable high / low output separately |
| Frequency characteristic | 30 Hz to 20 kHz ± 1 dB |
| Distortion factor THD | 0.5% or less (30 Hz to 20 kHz) |
| Signal-to-noise ratio | 80 dB or more (at maximum output) |
| Tone control | ± 16 dB (100Hz/10kHz) |
| Limiter release | 0.5 sec, 1.5 sec |
| Other features | Limiter, Reverb unit, Electronic crossover network (500 Hz, 800 Hz switchable) |
| Power | 120 VAC / 240 V, 50Hz/60Hz 24 VDC / 28 VDC (Battery) |
| Power consumption | AC:50W DC : 2A maximum |
| External dimensions | Width 965x Height 305x Depth 660 mm |
| Weight | 54.5kg |
Design
The 1220AC features a leather-covered case with removable steel feet that store internally. The console section detaches for desktop use, enhancing deployment flexibility. It includes a built-in reverb unit capable of producing echo effects and a limiter to prevent over-level distortion. The electronic crossover network allows switching between 500 Hz and 800 Hz for separate high and low-frequency outputs, enabling direct integration with multi-way speaker systems without external processing.
Context
Designed for PA use, the 1220AC offers electrical performance comparable to studio recording consoles, providing high reliability and functionality suited for professional live sound. Its feature set also allows it to function effectively as a recording console where portability and integrated processing are advantageous.
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