I'm not an electronics guy so am going to take my HK430 Twin and Radio Shack (!) Nova 8B speakers in to my local audio guru for some serious work. I've had the receiver for about 12 years and the speakers for half that. The receiver will get the full rebuild treatment, I like it that much, though I've no idea how much it needs. The speakers I'll check with them about; online fora seem to hold them in high regard and worth working on, though most seem to do it themselves.
I'm not an electronics guy so am going to take my HK430 Twin and Radio Shack (!) Nova 8B speakers in to my local audio guru for some serious work. I've had the receiver for about 12 years and the speakers for half that. The receiver will get the full rebuild treatment, I like it that much, though I've no idea how much it needs. The speakers I'll check with them about; online fora seem to hold them in high regard and worth working on, though most seem to do it themselves.