Power transformer Orientation

General discussion area for tube amps.

Moderators: pompeiisneaks, Colossal

Post Reply
sabredude
Posts: 49
Joined: Tue Dec 30, 2008 3:35 pm

Power transformer Orientation

Post by sabredude »

I just read in Kevin O'Conners TUT3 (p4-12) that the power transformer should be mounted with the bells pointed toward the front and back of a chassis since the bells will be the highest leakage from the transformer. So I go into my designs and start changing the layout of my transformers and realize that every amp I ever built has the power transformer with the bells pointed right to left instead of front to back. Then I start looking at all of my marshall amps and they are the same way - bells point right/left on chassis.

Anybody ever messed with this? Is this splitting hairs? I understand the 90 degree orientation of power to output transformer but do the bells really present a concern?
Prairie Dawg
Posts: 156
Joined: Sun Jan 10, 2010 2:19 am
Location: Windsor Heights, Iowa

Re: Power transformer Orientation

Post by Prairie Dawg »

I've got a Super Reverb that ain't like that. I think he's picking the fly s**t out of pepper myself.
If you believe in coincidence you're not looking close enough-Joe leaphorn
sabredude
Posts: 49
Joined: Tue Dec 30, 2008 3:35 pm

Re: Power transformer Orientation

Post by sabredude »

Thanks Prairie Dawg! If nothing else, you gave me a great saying!
Happy new year!
User avatar
rdjones
Posts: 818
Joined: Tue Aug 31, 2010 2:20 am
Location: Music City, TN

Re: Power transformer Orientation

Post by rdjones »

Prairie Dawg wrote:I've got a Super Reverb that ain't like that. I think he's picking the fly s**t out of pepper myself.
I don't think a Super Reverb can be like this if the bells are pointed up and down.

rd
User avatar
M Fowler
Posts: 14036
Joined: Wed Jan 16, 2008 2:19 am
Location: Walcott ND

Re: Power transformer Orientation

Post by M Fowler »

I tried orienting my end bells out so they did not face toward the OT but made no difference.

Probably because I allowed the correct spacing when mounting the PT the with end bell facing the OT and choke.
Alexo
Posts: 477
Joined: Thu Mar 22, 2007 3:27 am
Location: The Hudson Valley

Re: Power transformer Orientation

Post by Alexo »

If it ain't broke, don't fix it.

...though I have to concur, usually the lowest noise induction happens when you align the PT lams with the OT bells.
Life is a tale told by an idiot -- full of sound and fury, signifying nothing.

...in other words: rock and roll!
Post Reply