Can anyone tell me what the likely problem is with the sound system? I've had the car for 21 years, and it's been bad like this for years. It's the Brighton, so just two speakers, one in in each front door. Sound cuts in and out, especially when changing the volume. Sometimes no sound on one side at lower volumes, tends to be better at higher volumes.

I know it's not the speakers. I replaced them last year, and it didn't help. The speakers I got sound worse than the OEM, so I'll put the originals back in at some point, and maybe move the newer ones to the rear doors if the rear doors turn out to be wired (not sure).

If it's likely the head unit, is this a common problem? I'd like to stick with a Subaru branded unit that will plug right in, but I want to avoid the same problem. I listen to the radio on it, and use a bluetooth FM thingy to listen to music from my phone.

Edited September 13, 20214 yr by Lightning Racer

Simplest problem on earth - a scratchy pot.  You're going to have to take it out and pop the lid, then spray some electronic contact cleaner/lubricant into that volume control.  There's usually a little hole in it to spray into.  Should sort you right out.

I have a bunch of Subaru units that will plug right in.  

Your's for the costs of shipping from CO.  

Flat Rate USPS should be $20