low voltage amp designs?

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markmalin
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low voltage amp designs?

Post by markmalin »

Hi guys. I realize this is kind of off topic, but I trust you guys. I'm thinking of building a low voltage amp (5w? 15w? switchable?), maybe volume and tone control only. Anyone had any experience or any ideas where I can get some...er...ideas? I did some work on a customer's Valve Jr and thought it might be fun to build something along these lines.

Anyhow, again, sorry for being off topic

Mark.
"...there are flying v's and then there are the ones shaped like peanuts..." - my son at age 9

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PaisleyTube
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Re: low voltage amp designs?

Post by PaisleyTube »

low voltage or low wattage?

different things.......
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martin manning
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Re: low voltage amp designs?

Post by martin manning »

You mean low wattage, I think? With only a couple of controls I gather you're not looking to do a low-watt Dumble-type. What you describe is something like a Champ.
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roberto
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Re: low voltage amp designs?

Post by roberto »

Yes, I think he wants a simple SE EL34/6L6 amp with a triode/pentode switch.
That's all.

Oh, and I'll move this thread on another section of the forum.
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stelligan
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Re: low voltage amp designs?

Post by stelligan »

Very nice single ended d-style amp documented here:
https://tubeamparchive.com/viewtopic.php?t=13854
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markmalin
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Re: low voltage amp designs?

Post by markmalin »

Sorry guys ;) Long day :oops:

Yes, a low wattage amp. I probably need to do more research, but something with a single 6L6 or EL84 or something at the output.... I'm still trying to define this, but something simple.
"...there are flying v's and then there are the ones shaped like peanuts..." - my son at age 9

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markmalin
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Re: low voltage amp designs?

Post by markmalin »

stelligan wrote:Very nice single ended d-style amp documented here:
https://tubeamparchive.com/viewtopic.php?t=13854
Very interesting!! I've got to look closer at this - I appreciate the link.
"...there are flying v's and then there are the ones shaped like peanuts..." - my son at age 9

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xtian
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Re: low voltage amp designs?

Post by xtian »

Well, I am looking for a low VOLTAGE amp, because I have this Japanese PT with 135vac secondary.
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10thTx
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Re: low voltage amp designs?

Post by 10thTx »

I just finished building this amp this wkend. Probably around 7 watts?

I am very happy with it. Very smooth overdrive to my ears.

With respect, 10thtx
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10thTx
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Re: low voltage amp designs?

Post by 10thTx »

I've built several 6BM8 amps that are around 7-9 watts and like them a lot. In fact, I prefer the 6BM8 pentode over an EL84.

I have not built this particular amp with 6BM8's but I think it would work out just fine.

With respect, 10thtx
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10thTx
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Re: low voltage amp designs?

Post by 10thTx »

And ........ after reading what the guys did with a "mini-Wreck" here:

https://tubeamparchive.com/viewtopic.ph ... =miniwreck

I thought the sound clips of the 6SN7 push/pull Wreck were excellent.

I have wondered how a mini-D'styled Tweed Overdrive Special would sound at 2 watts?

I liked the Tweed Overdrive Special so the idea of a simplified very low wattage D-inspired amp intrigues me.

With respect, 10thtx
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markmalin
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Re: low voltage amp designs?

Post by markmalin »

Thanks for the schematics. I was reading some of your input on the post link someone added above... Man, there's a lot out there! I guess I need to define what I want and start experimenting with some of these ideas. Lots of great input.

Mark.
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Zippy
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Re: low voltage amp designs?

Post by Zippy »

Check also the threads on Eagle Supre - SE, low wattage (depending on your selection of output tube).

https://tubeamparchive.com/viewtopic.ph ... agle+supre
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markmalin
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Re: low voltage amp designs?

Post by markmalin »

Zippy wrote:Check also the threads on Eagle Supre - SE, low wattage (depending on your selection of output tube).

https://tubeamparchive.com/viewtopic.ph ... agle+supre
Thanks, Zippy. That looks VERY interesting. Cool!
"...there are flying v's and then there are the ones shaped like peanuts..." - my son at age 9

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jazbo8
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Re: low voltage amp designs?

Post by jazbo8 »

Speaking of low-wattage amps, have you guys checked out the Slash signature SL-5, Marshall debuted at NAMM this year? It's 5W/1W SE with EL34, ripe for a reverse engineering job ;-) But not sure if it is ok to discuss current production amps here, so I will await the moderator's comment.
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