Cobain86 Posted August 21, 2013 Share Posted August 21, 2013 sorry but i cant found a bogner section in this forum but i know that line6 does the support for the bogner alchemist amp So here is my problem the 2nd channel(gold) sounds very bassy and muddy - doesnt matter what EQ settings i suppose. also the bright switch on that channel isnt working like it was before. you cant hear a difference with or without the bright setting. any ideas? what can I do? i already shipped the amp to the dealer(thomann - Germany) and they shipped it to the repair center. But they cant find a problem Quote Link to comment Share on other sites More sharing options...
Rowbi Posted August 25, 2013 Share Posted August 25, 2013 I wonder if the issue is a failed preamp tube. V3 is only for channel 2 See here for the manual with a description of the tubes: http://c3.zzounds.com/media/Bogner-36b3e4c12cda7ccd7d9b411f9368e08c.pdf I wonder if the boost also uses part of v3 in which case that could explain the issue. Perhaps ask Thomann to swap v3 and v4 and retest with the FX loop off. If that makes it better swap them back and replace v3 with a new tube. Cheers Rowbi Quote Link to comment Share on other sites More sharing options...
Cobain86 Posted December 12, 2013 Author Share Posted December 12, 2013 hi rowbi thanks for your suggestions but the problem still exists. i`ve put a new preamp tube to V1, v2 v3 and v4 and the problem still exsits. The amp was also 2 times at the german repair center for bogner/line6 products but they cant find anything. Quote Link to comment Share on other sites More sharing options...
tomcoryell Posted December 26, 2013 Share Posted December 26, 2013 Hi Cobain86, I had similar but not identical issues with my Alchemist. I carefully pulled the chassis out and reseated all connectors in the audio path and made sure all power supply connections were tight. There are a lot of internal connectors in this amp and they are all places where oxidation can cause problems. By reseating I mean I unplugged and replugged every connection 3times in an effort to scuff the oxide off the connections. I was very careful not to bend or break pins in the process. Also a product like Caig Deoxit used sparingly on the connection will help as well. It helped my issue immensely. 1 Quote Link to comment Share on other sites More sharing options...
puterg33k Posted January 4, 2014 Share Posted January 4, 2014 I recently bought a Bogner Alchemist 1x12. Not really sure what muddy means. However, when I use the gain channel, whenever I use any gain, boost, or the punch. My guitar sounds like it's connected to a Fuzz machine. It gets so bassy, buzzy, and fuzzy that its completely unusable. It's like having multiple fuzz boxes in an effects loop. It honestly sound nothing at all like the numerous videos people post online. Sucks too because I just got back into this, and blew a good amount of money on this amp. @Cobain86 Sorry man, not trying to hijack your thread, but I think I'm having a similar, or the same problem. @tomcoryell I wish I knew what you were talking about, I'd take it apart and try to fix it right now. I just don't have the education or experience to try this, and my local amp guy says he wont touch this thing. C'est la vie!!! Maybe me getting back into guitar wasn't meant to be. :( Quote Link to comment Share on other sites More sharing options...
Cobain86 Posted January 16, 2014 Author Share Posted January 16, 2014 so does anybody have a solution for our problem? i already checked every connection on that amp. @puterg33k yes my mercury channel sounds like you have the treble on the guitar all the way down - so no highs are comming through. Quote Link to comment Share on other sites More sharing options...
Cobain86 Posted September 15, 2015 Author Share Posted September 15, 2015 no solution? no ideas? thats sad. Quote Link to comment Share on other sites More sharing options...
hetrickaj Posted September 12, 2019 Share Posted September 12, 2019 I know this thread is ancient, but did you ever get an answer on your amp? i noticed mine having the same issue, didn't matter if it was biased soft or hard, it sounds muddy and like it's bottoming out. Thanks, Quote Link to comment Share on other sites More sharing options...
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