Journal Forum

Synthetic Reverberator - January 1960

Sound Board: High-Resolution Audio - October 2015

Synchronized Swept-Sine: Theory, Application, and Implementation - October 2015

Access Journal Forum

AES E-Library

A Low-Noise, Two-Wire, Condenser Microphone Preamplifier

Document Thumbnail

Vacuum tube preamplifiers for use with dc-biased condenser microphones have two drawbacks: They require multi-wire cables and they are usually noisy. Using the high voltage transistors available today, a two-wire -cathode follower- type of preamplifier is practical. If a low leakage FET is used at the input, bias resistors of 1000 megohms or more become practical, substantially reducing the input noise level. The design of such a preamplifier, with its associated power supply, is discussed.

AES Convention: Paper Number:
Publication Date:

Click to purchase paper or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!

This paper costs $33 for non-members, $5 for AES members and is free for E-Library subscribers.

Learn more about the AES E-Library

E-Library Location:

Start a discussion about this paper!

Facebook   Twitter   LinkedIn   Google+   YouTube   RSS News Feeds  
AES - Audio Engineering Society