Not normal, would have it checked out if indeed it's the Levinson (ie not a poor connection or speaker problem). Coming on 8yrs with mine, never had an issue. Great CDP, by the way, hope the issue is resolved.
Levinson 390s -- intermittant loud cracking sound
I just picked up a new (used) 390s today. Sounds great, but every so often it emits a loud popping noise out of the speakers (seems to come from the right channel). Almost sounds like static-electricity discharge through the system. My understanding is the unit has low hours, original owner, and it hasn't been hooked up for quite awhile. Is this normal and just the unit re-charging capacitors, etc, so to speak? Or is this an indication of a problem? Thanks.