F5 power amplifier

[tinitus]

if you want optimal sound quality, avoid all magnetic materials
and keep all kinds of metal far from trafo
not even copper, no nothing

now, if you have severe noise problem, then may be different issue
and I guess most of us have
in these times with computer switchmodes everywhere

[Snokker]

If that would be the case you can't even mount a toroid in a metal housing...
There's no magic involveld with shielding transformers, some manufacturers have "audio grade" toroids with grounded metal film shields at the outside.
Noise problems with toroids are often caused by harmonics on the mains and because of the high bandwidth of toroid you also see them secundairly... Odd harmonics on the neutral of the mains (3rd, 5th etc.) is indeed a problem, and the only solution is filtering (or throwing out all inverters, led lighting, also at the neigbours )

[Marra]

Originally Posted by jimbo51

But make sure it's clean inside or the amp may sound a bit crumby

That takes the biscuit

[Itsmee]

Originally Posted by Bksabath

Now for the easy answer why not try a biscuit tin ?

Originally Posted by jimbo51

But make sure it's clean inside or the amp may sound a bit crumby

Originally Posted by Marra

That takes the biscuit

That tin should make it sound sweet

[DJNUBZ]

You guys are terrible

[umut1001]

someone says adding an old transformer to the output of amp makes sound like sweety tube amp

[Nelson Pass]

Originally Posted by umut1001

someone says adding an old transformer to the output of amp makes sound like sweety tube amp

That really depends, but it's always interesting to try and see what you get.

[umut1001]

I think so.It may change sound character.My mum sold my 4 old transformers for just 6 USD They weigh about 20 kilograms. Too many copper is gone also

[Nelson Pass]

It will definitely change the sound character, the only question is whether
you will prefer it that way.

[jameshillj]

Is this like adding a choke load the o/p stage? Two seperate bifilar windings, maybe?