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- Mon Feb 01, 2010 11:51 pm
- Forum: Technical Discussion
- Topic: Do I need to change my Cathode Resistors? Class A content...
- Replies: 8
- Views: 2978
Do I need to change my Cathode Resistors? Class A content...
Here's the deal, I just picked up a used Trace Elliot Speed Twin C30 30 watt Class A combo amp. The amp uses 5 12AX7s and 4 El84s. I re-tubed with JJs across the board and it sounds GREAT. This amp is Cathode Biased and has no bias adjustment. The manual specifically says drop in a matched QUAD of E...