Please suggest me a design

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jcat5503
Posts: 114
Joined: Sun Feb 28, 2010 12:18 am

Please suggest me a design

Post by jcat5503 »

My friend wants me to build him a high gain single channel dual el84 amp.

I will use standard 18 watt iron

Any body have some suggestions for designs i should check out?

Has anyone built a higher gain Dumblish two el84 amp? I think that would be awesome..

Cheers!
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Ken Moon
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Location: Denver

Re: Please suggest me a design

Post by Ken Moon »

I'd suggest Randy Fay's Daisycutter - he was nice enough to share his design over at AX84, where you can search for the threads that discuss the details.

This amp is an improvement over the typical 18watt design - Randy spent a LOT of time tweaking this thing to get a respectable hi-gain sound out of the EL84 buzz-bombs, and I think he should be congratulated on sharing the results of his efforts.

Here is the schematic, but you really need to look over at AX84 to get the details, including some turret board layouts that others have done with Randy's circuit (Phaez amps are true PTP):

[img:1256:508]http://tubeampmods.com/18w_daisycutter_april_2010.jpg[/img]
jcat5503
Posts: 114
Joined: Sun Feb 28, 2010 12:18 am

Re: Please suggest me a design

Post by jcat5503 »

Yeah Randy is a great designer and a really nice guy

Dasieycutter looks awesome!

Any others?

The T-Rex looks kind of cool as well
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FYL
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Re: Please suggest me a design

Post by FYL »

Doug Hoffman's Stout is well worth considering.

[img:1296:684]http://www.el34world.com/projects/image ... ematic.GIF[/img]
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ChrisM
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Re: Please suggest me a design

Post by ChrisM »

FYL wrote:Doug Hoffman's Stout is well worth considering.
O funky tone control. Never seen it before, wonder how it is.
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FYL
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Re: Please suggest me a design

Post by FYL »

O funky tone control.
Sounds great. The PI section is even funkier: the out of phase side returns to ground thru the 47K bottom R, creating some nice imbalance...

The Stout growls like a good 18 watt, then goes from nasty to BAD.
Bob S
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DaisyCutter

Post by Bob S »

+++ on the DaisyCutter circuit. In yer face little beast.
Randy does make some great sounding amps.
Why Aye Man
jcat5503
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Joined: Sun Feb 28, 2010 12:18 am

Re: Please suggest me a design

Post by jcat5503 »

The Stout looks awesome!

That may be the one!

It is an unusual 18 watt design

Have you built one? Do you have a layout?
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M Fowler
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Re: Please suggest me a design

Post by M Fowler »

Jason you need to spend a few nights on other forums down loading schematics and layouts there all there for people to use. :)
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