Best Tube Position

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riley0
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Best Tube Position

Post by riley0 »

This diagram shows 2 ECL & 1 12AX.
Whats best position for placing these tubes?
My guess would be - power tubes closer to OT, the negative of this is longer ground runs and 12ax7 input run...
If the 12ax7 is closer to OT its closer to input/ground but the power tubes now have longer reach to OT.
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KagliostroAmpwww
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Re: Best Tube Position

Post by KagliostroAmpwww »

https://metrodcmusic.com/blogs/guitar-k ... er-chassis

https://robrobinette.com/How_To_Go_From ... Layout.htm


or, if you prefer the transformer at oposite sides look to the Hiwatt Chassis Layout (power tubes on the oposite side of the shield)
chassisValves.png
K
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riley0
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Re: Best Tube Position

Post by riley0 »

Chassie, transformers, input, fuse are irremovable.
This is already an existing PCB amp I'm trying to turn point to point.
It sits vertical in cab...

Think I've done pretty good job so far using pcb layout (not sure to carry out or leave it as is)...Just playing around, learning. I have all parts except G10 board, so just cheap project.

Been complicated fitting it all onto 35cm x 12cm...Does anyone think this is insane or do ppl try this..
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KagliostroAmpwww
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Re: Best Tube Position

Post by KagliostroAmpwww »

Oh, I understand

what can I say ... I'm a fan of PCB amp conversion

---

If you want to change the hole disposition on the chassis you can cover the whole surface with a thin sheet of aluminium (say 1mm or 1.5mm) and fix it to the chassis with rivets, then put new holes where is required

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