Studio Monitor amp transformer mystery

Received the transformers and I have a newbie question.

I ground together 2 ends of the secondaries I presume but does it matter which side of the secondary?

Orange and black to ground, yellow and red are the two 25v legs?

Before you guys think "dude bring them to a pro", a sentiment which I share, trying to find someone that is willing to fix my aging stuff A: In a timely manner B: Doesn't bullshit me and C: I trust to do a good job is very hard, even though I work in the industry.

Plus now I get to learn something and scare my girlfriend.

Thanks again.

Yes, try one pair and measure the voltages. If you don't get summation, swap one of the ends!

Sorted, thanks everyone!

They sound great still, and no more buzz.

Now I can enjoy my tinnitus in silence.

The large filter caps are "leaky"? Or try put a couple of 100nF caps across the rails. See if that helps.

kedwardsleisure wrote: where is that earth wire going near the transformer?

I knew someone was going to comment on that.

It's just jammed under that large washer. It used to run to the base of the old transformer because the old one was mounted in rubber, and therefore it needed it's own ground. The new one has a bolt going through the grounded aluminium plate so it is now unnecessary, so I just jammed it under there.

Both the earth wires, that one and the one connected to the plate go to the earth pole on the power connector. 

If the capacitors are dying it could cause a faint hum?

Thanks.