Wiring: Twisted vs Strait.

[leadfootdriver]

I read in the Wizards book to always twist your wires together tightly. But in Kens amp, he doesn't bother. Plus it looks like the signal wires are pretty short to boot.

Lets talk about wiring techniques!

[angelodp]

Check this out.

https://tubeamparchive.com/viewtopic.ph ... ht=heaters

[leadfootdriver]

Well that covers the heaters, but what about the rest?

[angelodp]

I believe for the most part that signal wire runs are meant to be as short as possible and avoid running them parallel to other signal wires ( some interesting exceptions in Dumbles ). When topology requires a traverse of wires it should be done at 90 degrees. Transformer wires are twisted as well. Then there is the whole issue of solid core vs stranded... loads of back and forth here if you search. There is much discussion regarding shielded runs and the use of controlled capacitance in the signal. Gil Ayan has a great primer on lead dress.

http://www.ayanmusic.com/leaddress.htm

Hope that helps.

[surfsup]

From that link, the grammar as screwing me up. It seems like he is saying the grid lead is the most critical, and to use at first a very long lead for the grid, and a 2nd long lead with gators on both ends. Wrap one around the grid, then touch the other end to various plate pins (I assume only the two on the tube in question?). But he says inphase robs tone, out of phase squeals. So why not just run grid leads away from ANY plate leads?

"What's going on here is that now you're capacitance coupling your grid lead wire to all other points of the circuit via that alligator clip patch wire, which is similar to what would happen if you lay your wired back into the circuit. As expected, plate leads from stages which are in phase with the grid wire in question will make your amp squeal like a pig when you touch them with the alligator clip, so you'll want to stay far from those wires. Conversely, plate leads out of phase with the grid lead will KILL TONE big time, again keep your distance.[...]

What to do? Map out the areas of the circuit where it is "safe" to run your lead dress, based upon your experimentation as described above, and you will end up with an optimum path for the grid wire. In most cases, this will not be a straight line -- which is obviously the shortest distance,

It also seems he is saying it is good to have long plate leads which doesn't make sense since this would provide more problem areas with grid leads:

Some books address various anti-microphonic techniques (long plate connections, short grid connections, shielding, etc.),

Interesing recommendation on shielded:

Foil type shielded cable, although much more expensive, is the only way to go.