My Acoustasonic Junior PR 334 has a distorted sound at all volume levels.  Low notes in particular generate a fuzzy tone, almost as if I were using some gain.  I'm a novice and unable to test circuits.  However, I disconnected each speaker (and the horn), and experienced the same poor quality sound as I added each speaker and horn, one at a time, and in various combinations.  I connected both Acoustasonic speakers to a Kustom amplifier and the sound remained poor.  I connected the Acoustasonic amplifier to a Kustom speaker and the sound improved.  Any help would be appreciated.