Tiny Amplifiers

[Audio_idiot]

Hi,
Do you think a Hybrid amplifier a cheat as a tiny amp?

I'm working on a Aikido driven Power fbuffer, maybe a souce follower or an unity-gin Op-amp. I'm almost done with Aikido experiments and in the process of casing up the amp... but I still can't decide on the output stage.

Cheers

 

[soundbrigade]

I am at this point most interested in tube-only designs.

If I was to go for this
dual paraSE/PP/triode could a transformer like the Edcore PCW 10K-600 do the job?

 

[d2134]

could a transformer like the Edcore PCW 10K-600 do the job?

As input transformer in the PP amplifier? Yes, why not?

 

[soundbrigade]

Gotta order and gotta try this out.

But first a hectic 5 weeks in Russia.

 

[d2134]

Well, if you do not have one yet and got to order then better order the PCW600/10K model. It will be perfect for the job. (same price)

http://www.edcorusa.com/products/transformers/pcw/pcw600-10k.html

 

[soundbrigade]

Nonono ... things pass very slowly over here or as we say in National Bureau of Apathy, JUST DO IT, but maybe later ..... .

But good to have something to look for. I have picked out some components from my small stoch and will look into this after coming back from our trip.

 

[nige8388]

I've got the smallest...

So far, I think that mine's the smallesst...

It's tube line-up is:
35w4
12at6 (x2)
50c5

All tube (no solid state). Built into a 6" x 4" x 1" steel box. Puts out around 1.5-2watts. Not my design...it's called the All American 4, after the all american 5 radios that all of the tubes came out of...

Hope somebody's still into this thread...

 

[planet10]

Two amps (maybe identical?) on 50EH5: Single tube 50EH5 SE and second

The second of those is mine. Help from Allen Wright on the design (and he named it), my 1st from scratch tube amp build... smaller, i think, than Nige's (but it does use SS rectifier)

5-Buck Amp

dave

 

[rmyauck]

Hi Dave,

Nice little amp!

How does it compare to 6v6 SE amp?

Do you really need tube coolers? Tube must be increased?

Do you know primary impedence on output transformer?

Thanks

Randy

 

[planet10]

Not really in the same league as a 6V6SE... particularily with those tiny OPTs (probably 2.5K>8).

The tube coolers actually invoked the name -- i was helping Bill package up a set of coolers for a Swedish distrib, and those were rejects -- floor sweepings -- that Bill kust gave me. They are there only to improve the caraciture value of the amp 🙂

The amp is now somewhere in SE USA... someone emailed me and just gad to have it.

dave