• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

General assembly advices ?

Hi !

I am currently collecting some advices/ ideas/ hints to be taken care of when building an amplifier with point-to-point wiring.

I have just started to build me a parallel push pull tube amplifier with two KT88 per channel. The schematic is not the problem, it is the hardware layout.

A lot of things can be done wrong.

Here is some example of what I am looking for.

- Correct placement of electronic components. e.g. Transformers always rectangular to each others. This is to minimize cross-talk.

- Short leads where high frequencies might occur (low pass filters)

- direct connection of ground to one point using cables.

- Size of cables ?

- When using shielded cables, always connecting one end of the shield to ground only.

- Twisted pair for anode heating

- One connection between ground and amplifier chassis only.

I was very glad if you could give me some more hints.
Do you know any web links ?


Thanks a lot in advance.

Cheers,

Volker.