ThreeChordWonder
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My 1966 onwards* Mojotone JTM45 kit and my Mojotone DR103 kit both use a single 1N4007 diode in the power tube bias supply.
The rectifier diodes on the DR103 are 1N5408s.
My next project, a Mojotone Super Lead 100 also uses 1N4007s in the rectifier.
It's my understanding, correct me if I'm wrong, that the 1N5406 van handle more current than the 1N4007. 3 amps vs 1 amp. There's a slightly higher forward voltage drop, 1.0 to 1.5 volts vs 0.6 to 1.0 volts.
So the questions are simply:
1. would 1N5406 diodes be better in the rectifier section?
2. Can I use 1N5406s in the bias feeds in place of 1N4007s?
* The original JTM45 used KT66s IIRC, but post 1966 Marshall switched to EL34s, so the Mojotone is a copy of the post switch version. I expect Marshall made the switch because the EL34s were cheaper and or easier to find in the 1960s UK.
The rectifier diodes on the DR103 are 1N5408s.
My next project, a Mojotone Super Lead 100 also uses 1N4007s in the rectifier.
It's my understanding, correct me if I'm wrong, that the 1N5406 van handle more current than the 1N4007. 3 amps vs 1 amp. There's a slightly higher forward voltage drop, 1.0 to 1.5 volts vs 0.6 to 1.0 volts.
So the questions are simply:
1. would 1N5406 diodes be better in the rectifier section?
2. Can I use 1N5406s in the bias feeds in place of 1N4007s?
* The original JTM45 used KT66s IIRC, but post 1966 Marshall switched to EL34s, so the Mojotone is a copy of the post switch version. I expect Marshall made the switch because the EL34s were cheaper and or easier to find in the 1960s UK.