TR JM 50w Build Thread

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Marshmallow
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Re: TR JM 50w Build Thread

Post by Marshmallow »

So this amp might sell. 🤔 Someone randomly offered me $$ but not sure yet. Could always build another one haha 😆

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Re: TR JM 50w Build Thread

Post by Bg »

any progress yet?
So, is that low alcohol or no alcohol at all? mmmm, no alcohol, do you want to try it? Noooooooooo.

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Re: TR JM 50w Build Thread

Post by Marshmallow »

Final check up. Didn't even get a chance to put a handle and as faceplate on it. Will go tomorrow morning.

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Re: TR JM 50w Build Thread

Post by MikeC »

Marshmallow wrote: Sat Jul 31, 2021 2:49 pm Final check up. Didn't even get a chance to put a handle and as faceplate on it. Will go tomorrow morning.

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Re: TR JM 50w Build Thread

Post by jeremyb »

I’ve been wondering about building a ~12-15 watt JM combo amp, maybe a 10” speaker, no reverb needed… doable?
Slowy wrote: That's the problem; everything rewarding is just such hard work. Regret takes much less effort.

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Re: TR JM 50w Build Thread

Post by jeremyb »

Slowy wrote: That's the problem; everything rewarding is just such hard work. Regret takes much less effort.

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Re: TR JM 50w Build Thread

Post by Marshmallow »

jeremyb wrote: Sat Jul 31, 2021 3:07 pm I’ve been wondering about building a ~12-15 watt JM combo amp, maybe a 10” speaker, no reverb needed… doable?
Yea very doable but don't build a JM amp without a reverb. The reverb circuit is probably one of the best features of the amp. If you want the amp without the reverb, I suggest to check out the ODS clean circuit and change the values similar to the JM amp. Layout and schematic is a lot easier to look at as well😆. Btw, Two rock and ODS also share the similar circuits but have different values so the amplification is different. Definitely need 12" speaker. 😁

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Re: TR JM 50w Build Thread

Post by Marshmallow »

jeremyb wrote: Sat Jul 31, 2021 7:17 pm Maybe something like this? https://el34world.com/Forum/index.php?topic=24028.0
Won't be enough, you need those tone shaping switches. You have no idea how much you will need/use them 🤣Probably easier to just take the circuit directly from the ODS circuit and omit the gain circuit. 🤔

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