Beginners Project: Need a schematics for a small simple EL84 SE (or PSE) amp - diyAudio
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Old 29th April 2002, 10:13 PM   #1
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Default Beginners Project: Need a schematics for a small simple EL84 SE (or PSE) amp

Ive decided to build a simple EL84 amp as my first tube project. This first project will be more about learning than to build an extremely good amp.

For instance, I found a cheap universal OPT at a great price (About US $25 each): http://www.demostenes.no/endr1be.asp?Kode=3956

Id really like to use either those trannies, or a couple of Hammond universal OPTs from the 125x line, maybe the 125B would be suitable for an EL84 SE amp and the 125C for a PSE amp with two EL84 per channel?

The Hammond OPTs mentiones cost about the same as the first one I linked to, which is made by an italian company called Novarria.

What Im looking for right now is a suitable schematics. Ive read the thread about SE EL84 amps and really like this one:
Click the image to open in full size.

Please give me some advise. Ive done some calculating and it looks like it would cost around US $100 to build the amp in the picture.

/Erik
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Old 29th April 2002, 11:30 PM   #2
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Here are 3 interesting circuits I found at tubebuilder.com

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

/Erik
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Old 15th May 2002, 12:35 PM   #3
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The one with the EF86 looks like it might be the Mullard 3.3 circuit, which I have listened to mono blocks. The set of 4 transformers was $400, hand wound in England. Review in <www.audioreview.com>
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