In alt.home.repair, on Mon, 4 Dec 2017 20:56:03 +0000 (UTC), harry
newton wrote:

He who is Oren said on Mon, 04 Dec 2017 12:33:32 -0800:

I'll defer to the expertise of others, but if you wiggle the wire does
the "scratchy sound" increase?

Perhaps a speaker wire connection is less than satisfactory. Ground
wire on the stereo needs to be checked -- maybe?

That's a good idea to wiggle wires (I haven't done speakers in years).
The car is at college

You must be so proud. My car didn't even finish the 6th grade.

so it only comes home to do laundry.

When it comes home, the neighbor will call me and I'll be ready.

What I'll do is:
a. Try to find a test speaker of about 20 watts
b. Make a set of jumper wires to jump one side to the other
c. Wiggle the wires to see if the speaker or the radio is bad