Re: Why are my computer speakers broadcasting a local radio station?

Ken,

It looks like you have made a nice little am radio!

I actually really mean this.  A simple radio is really just an antenna, an 
amplifier, and a speaker.  You have these components in your computer 
speaker system, though you might not realize the antenna.  

Any piece of metal can act as an antenna, the electrons in the metal 
ripple with the frequency of electromagnetic waves that make up 
broadcasts.  Depending on the dimensions of the metal (particularly the 
length), some frequencies get carried by the metal better.  An analogy 
might be a waterbed or trampoline, where there are certain rates of 
jumping on them really gets them bouncy.  You might notice that truck CB 
antennas are really long and car cell phone antennas are really short.

Most likely the severed output cord is now a length that is really in tune 
(literally) with the waves from 1420 AM.  Note: It could be any of your 
cords, but the length change of the output cord marks it as the culprit.

If you rather have a different station, try cutting more off of the 
severed cord, or adding more on.