Altec Lansing 1220AC

Name: Altec Lansing 1220AC
Brand: Altec Lansing

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.