Altec Lansing 1612A
A line and limiter amplifier with switchable gain configurations and logarithmic compression capability
Overview
The Altec Lansing 1612A is a dual-function limiter amplifier designed for professional audio applications. It features two input circuits and provides both line amplification and limiting functions in a single unit. The device supports a microphone pre-amplifier with 90 dB gain via a plug-in assembly, which can be reconfigured as a 40 dB gain, 600 Ω line amplifier. Up to 25 dB of logarithmic compression is achievable through its limiter function, making it suitable for dynamic range control in broadcast or recording environments.
Specifications
| Function | Line and limiter amplifier with two input circuits |
| Limiter function | Logarithmic compression up to 25 dB is possible |
| Line amplifier function | Has a 90 dB gain microphone pre-amplifier by plug-in assembly |
| Line amplifier function | Can be changed to a 40 dB gain 600 Ω line amplifier |
Design
The microphone pre-amplifier is implemented using a plug-in assembly, allowing for flexible configuration and potential serviceability or upgrades in the field.
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