36 Watt EL34 Superlite TMB

Double-Bubble! Place for discussing the 36W version...

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JMPGuitars
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36 Watt EL34 Superlite TMB

Postby JMPGuitars » Thu 08/08/19 7:57 pm

Well, here it is. My take on the Superlite TMB with EL34 power tubes. I designed this (with feeback from Zaphod_Phil who created the original Superlite circuit) because I love the Superlite TMB, and I love EL34s.

The build I did included reverb, but the rest is completely the same. If you build this and your voltages are slightly off from mine, post them here before you worry about that. Obviously the extra tube in my build could change things a bit.

Here's my build:
_JMP3151.jpg

Here's the docs:
Layout: files/JMPGuitars_36_Watt_EL34_Superlite_TMB_Layout.pdf
Schematic: files/JMPGuitars_36_Watt_EL34_Superlite ... ematic.pdf
Voltages: files/JMPGuitars_36_Watt_EL34_Superlite ... ltages.pdf

If you decide to build this, please post final results here for discussion. If you need help troubleshooting, start your own thread first. ;)

Thanks,
Josh
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Re: 36 Watt EL34 Superlite TMB

Postby Riffmonster » Fri 08/09/19 7:53 am

Super cool, Josh! I really wanna build this one when I have some money. How do you like the sound? Does it sound like a JTM or more like a super lead?
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Re: 36 Watt EL34 Superlite TMB

Postby JMPGuitars » Fri 08/09/19 8:07 am

Riffmonster wrote:
Fri 08/09/19 7:53 am
Super cool, Josh! I really wanna build this one when I have some money. How do you like the sound? Does it sound like a JTM or more like a super lead?
I like the sound a lot! I'll post a demo soon. I've never owned or played a JTM or a super lead, so you'd have to tell me. ...actually, I've never really liked anything from Marshall except the 18 watt stuff, and I think the community on this site makes them better than Marshall does. I feel like the company ruins things for the mass production business model. That's my opinion anyway. ;)
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Re: 36 Watt EL34 Superlite TMB

Postby geoff 1965 » Fri 08/09/19 10:23 am

awesome!
thank's for posting the layout/schematic Josh.
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Re: 36 Watt EL34 Superlite TMB

Postby colossal » Fri 08/09/19 6:40 pm

That is an interesting amp. Almost Class A at idle. With 350V plates and 310V screens, 20V on the cathodes, that's 133mA for the pair. I bet it sounds great.
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Re: 36 Watt EL34 Superlite TMB

Postby JMPGuitars » Sun 08/11/19 8:32 pm

Here's a mediocre demo of my 36 Watt EL34 Superlite TMB.

2:54 reverb turned on (with the reverb off, the reverb portion of the circuit essentially doesn't exist)

4:39 bridge pickup switched to single coil

Bright/Thick Switch:
5:04 = thick
5:26 = off
5:42
= bright

https://youtu.be/PeRZXThV54s

Thanks,
Josh
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Re: 36 Watt EL34 Superlite TMB

Postby geoff 1965 » Mon 08/12/19 7:06 pm

well done Josh!
good range of tones & breakup,i like the thick/bright switch,simple but effective and looks easy to install.
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Re: 36 Watt EL34 Superlite TMB

Postby crgfrench » Mon 08/12/19 7:19 pm

Real nice! Sweet harmonics.
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