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- Tue Sep 18, 2018 4:13 pm
- Forum: Marshall Discussion
- Topic: Anderton '64 reissue JTM145 - any info?
- Replies: 442
- Views: 119020
Re: Anderton '64 reissue JTM145 - any info?
Could someone explain how to calculate the appropriate specs for an OP for the JMP? :? I'm still new at this. I see 200v b+ at 470ohms = approx. 43ma DC current. Is there more to add to this calculation? Most 3 watt OP I see are far below this in max DC. If I go up to a 5-10 watt OP, will I lose som...