Reply to thread

Message

<blockquote data-quote="RYAN LOUDMUSIC JENKINS" data-source="post: 475" data-attributes="member: 70">A buddy of mine has a couple of these units and is having issue with one of them so I figured I would throw this out there to see if anyone has advice.One of the channels sounds to him like it has a LPF and it is just a bunch of mud.&nbsp; Summit has been less than helpful and has not returned any of his emails or calls and no one ever answers their phone for him.He has the original tubes in it and the units are fairly old.&nbsp; Could a bad preamp tube cause this type of problem in a preamp?&nbsp; I believe that are 12AX7s.&nbsp; In my guitar amp when the tubes are going bad I hear wierd artifacts and buzzes but I have never lost all of the top end.Anyone have any ideas on these units or know anyone with experience working on summit gear?Thanks a bunch, Ryan</blockquote>

[QUOTE="RYAN LOUDMUSIC JENKINS, post: 475, member: 70"] A buddy of mine has a couple of these units and is having issue with one of them so I figured I would throw this out there to see if anyone has advice. One of the channels sounds to him like it has a LPF and it is just a bunch of mud. Summit has been less than helpful and has not returned any of his emails or calls and no one ever answers their phone for him. He has the original tubes in it and the units are fairly old. Could a bad preamp tube cause this type of problem in a preamp? I believe that are 12AX7s. In my guitar amp when the tubes are going bad I hear wierd artifacts and buzzes but I have never lost all of the top end. Anyone have any ideas on these units or know anyone with experience working on summit gear? Thanks a bunch, Ryan [/QUOTE]

Verification