The DIY Tube Head Thread

[IronRadio]

... BTW I just build guitar amps.

Paul

Cool! Then perhaps I can pick your brain as to a preamp design. Here's what I was thinking of, with 6911s - what do you think?

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[BassmanPaul]

I'm finding it a little hard to read ATM. I'll sketch it out a little differently. I have found in general, that cascodes, while working well for RF frequencies, don't "sound" as good as other topologies for audio. It's something akin to Broskie's Aikido (which I have built and liked).

My suggestion would be to breadboard it and take a listen.

Paul

 

[IronRadio]

The DB455 is done!!

But I can only get 300W out of it. The HVPT isn't delivering the needed current with sustaining the voltage. Therefore I might replace it. But the thing is bloody loud as it is. With gain and volume at half, the walls and floor shake incredibly as does my head. A bit painful.

 

[robd]

sound clips, please

 

[theavondon]

That amp needs a 4x15.

With all that power, more like two, akin to Om.

Then, you would have no more house. It would simply vaporize.

 

[Luckie]

The builder says, the 2 russian GU81M output tubes are good for 950 watts.

Say whaaaaaat?

 

[MAMMOTHvolume]

Cool! Then perhaps I can pick your brain as to a preamp design. Here's what I was thinking of, with 6911s - what do you think?

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your gonna have instability problems if you use that, with the current lay out.

 

[sansuii]

I think this is the place to share this with you:

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I didn't make the amp. I just thought it's so impressive I have to post it here. Found it on the german [Invalid or Expired Link Removed] board.
The builder says, the 2 russian GU81M output tubes are good for 950 watts.

Hello,

i build this amplifier, if you have any questions have a look at my website: http://www.kt66.de/gu81-amp.html

Best,