My earlier post (need help with a voltage-controlled-volume-control) went out of control with concern about my safety and ears - so maybe worth some clarification before someone sends me a hearing aid. The 5 watt stereo amplifier is driving 3 inch loudspeakers inside the helmet. Works and sounds fantastic but I would like to add an automatic volume control on the output of the iPod that would adjust the volume in relation to the wind noise. ie .. I can't eliminate the wind noise but I can adjust the volume of the music source (10-20 DB). I've read about voltage-controlled-resistors using FET's but I have no experience with this technology. Is it possible to build an attenuator with sufficient dynamic range and linearity using FET's? Any help is very much appreciated. Thanks again - sorry for the confusion I created on my first posting - Jack.
- posted
17 years ago