Marshall SV20
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Re: Marshall SV20
Thanks for the link, his origin 20 mods make it sound awesome!
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- MikeC
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Re: Marshall SV20
Those SV20s sound great! I'm thinking hard about building a 20W cathode biased Marshall Plexi style head using the Trinity Custom Plexi 6V6 circuit. I'll include power scaling so output will be infinitely variable between about 3 watts - Max watts. Haven't built anything for a little while!
What do you think? https://www.youtube.com/watch?v=zCFTU6K_J4E
What do you think? https://www.youtube.com/watch?v=zCFTU6K_J4E
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Re: Marshall SV20
My trinity kit was the Plexi 6v6 version. With VVR on the B+. Sounds greatMikeC wrote: ↑Mon Jan 17, 2022 8:05 am Those SV20s sound great! I'm thinking hard about building a 20W cathode biased Marshall Plexi style head using the Trinity Custom Plexi 6V6 circuit. I'll include power scaling so output will be infinitely variable between about 3 watts - Max watts. Haven't built anything for a little while!
What do you think? https://www.youtube.com/watch?v=zCFTU6K_J4E
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Re: Marshall SV20
That's good to know. Did you power scale the entire amp or just the power stage?Cdog wrote: ↑Mon Jan 17, 2022 4:00 pmMy trinity kit was the Plexi 6v6 version. With VVR on the B+. Sounds greatMikeC wrote: ↑Mon Jan 17, 2022 8:05 am Those SV20s sound great! I'm thinking hard about building a 20W cathode biased Marshall Plexi style head using the Trinity Custom Plexi 6V6 circuit. I'll include power scaling so output will be infinitely variable between about 3 watts - Max watts. Haven't built anything for a little while!
What do you think? https://www.youtube.com/watch?v=zCFTU6K_J4E
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Re: Marshall SV20
I installed it as recommended, scaling the whole amp... it sounds good at any setting. No need for a MVMikeC wrote: ↑Mon Jan 17, 2022 5:39 pmThat's good to know. Did you power scale the entire amp or just the power stage?Cdog wrote: ↑Mon Jan 17, 2022 4:00 pmMy trinity kit was the Plexi 6v6 version. With VVR on the B+. Sounds greatMikeC wrote: ↑Mon Jan 17, 2022 8:05 am Those SV20s sound great! I'm thinking hard about building a 20W cathode biased Marshall Plexi style head using the Trinity Custom Plexi 6V6 circuit. I'll include power scaling so output will be infinitely variable between about 3 watts - Max watts. Haven't built anything for a little while!
What do you think? https://www.youtube.com/watch?v=zCFTU6K_J4E
- FuzzMonkey
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Re: Marshall SV20
I'd love it if it was a hand-wired turretboard inside the SV20 head rather than an PCB.
- rickenbackerkid
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Re: Marshall SV20
That would be nice, specially because these things aren't cheap at nearly $2K for the combo, but for me the proof is in the sound, and I think the SV20 sounds great. The circuit and PCB design works just fine.
If you want a hardwired equivalent, one of the plexi kit amps could probably be built to SV20 spec. I can't find a schematic right now but I'm pretty sure I saw one at one time and lower output at 20 and 5 watts was done by undervolting the el34 plates along with cathode bias. That should be a fairly simple mod to a plexi build
If you want a hardwired equivalent, one of the plexi kit amps could probably be built to SV20 spec. I can't find a schematic right now but I'm pretty sure I saw one at one time and lower output at 20 and 5 watts was done by undervolting the el34 plates along with cathode bias. That should be a fairly simple mod to a plexi build
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Re: Marshall SV20
I agree. The tone is king first and foremost.rickenbackerkid wrote: ↑Tue Jan 18, 2022 12:39 pm That would be nice, specially because these things aren't cheap at nearly $2K for the combo, but for me the proof is in the sound, and I think the SV20 sounds great. The circuit and PCB design works just fine.
If you want a hardwired equivalent, one of the plexi kit amps could probably be built to SV20 spec. I can't find a schematic right now but I'm pretty sure I saw one at one time and lower output at 20 and 5 watts was done by undervolting the el34 plates along with cathode bias. That should be a fairly simple mod to a plexi build
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Re: Marshall SV20
See my earlier posts on this thread but I was interested in the SV20 too. I ending up building a Trinity Custom Plexi 6V6 with Global Power Scaling - refer https://www.trinityamps.com/product/trinity-18/ (scroll down to Custom Plexi for the description). I can build you one or I'd consider selling mine (and building another). I've got the Trinity schematic and build them from scratch.
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Re: Marshall SV20
Oooh Mr Mcnoleg, you look handsome in green!
Last edited by MikeC on Thu Oct 13, 2022 2:38 pm, edited 1 time in total.
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Re: Marshall SV20
Looks great Mike, I'd like one with an FX loop at some stage. I really should get off my ass and build one myself.
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