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Right channel distortion

I've noticed a problem recently with an intermittent static/distortion sound in my right channel.The cds are clean and play without any problems on a portable player. Plus it doesn't occur with every cd. I'm used to hearing clicking and mistracking if the cd is dirty but this sound i haven't heard except when my stylus hits a particularly grungy area on vinyl.
Is there any chance this could be my tube preamp calling out for replacement tubes? I've heard that tubes get "noisy" at the end of their lifespan. Is this the type of noise and could it be somewhat intermittent or only audible with some frequencies? If it is the CD player, then why isn't it occuring all the time?
I unfortunately do not have an extra preamp to test out and don't have a way to plug the portable player into my main system.
Any suggestions on what could be most likely would be greatly appreciated.
jt101

Showing 1 response by paulwp

paulwp
585 posts
 
Could be the tubes. Turn the preamp completely off and switch the tubes from one channel to the other. If the noise moves to the other channel, then its likely the tubes.

Could be your cables. Try taking the interconnects off and putting them back on making sure they're tight. Or try a different set of interconnects. And make sure your speaker cables are securely fastened on both ends. (Actually I would do these things before messing with the tubes.)

If none of that works, it's likely your cd player. You probably can get an adapter plug to plug your portable in to the main system, unless its a boombox type.
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