Hi all,
i just build my first jtm45 clone (tubeampdoctor) so i am a bit of a rookie.
link for layout from my build
https://www.tubeampdoctor.com/images/ar ... .04.14.pdf
i ordered the Mercury O45RS-L but i need some help with the wiring its a bit difficult for me.
heres the link with the wiring diagram
https://www.mercurymagnetics.com/2018/w ... 45RS-L.pdf
is this correct:
primary
Green white on pin 3 V4
Green on pin 3 V5
Centertap to fuseholder
Secondary for 8 Ohm
Brown White Black connected with each other
Red and blue together: to positive speaker load to speaker input jack
Green: negative speaker load. to speaker input jack
help with Wiring Mercury O45RS-L
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Re: help with Wiring Mercury O45RS-L
Great transformer. I've used this same one since I build my amp in 06. I'm at work right now but when I get home later today, I'll look at my notes and confirm with you.
Are you using KT-66's or EL-34's?

Are you using KT-66's or EL-34's?

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Re: help with Wiring Mercury O45RS-L
Hi sorry for not answering but i tought that my question
Was not approved because i saw it nowhere back.
Just looked at my inbox and here it is.
I use KT66
But the output tranny is already installed.
The guy (local MM dealer) installed it for me.
And he made it switchable from 8 or 16 ohm.
It works great
Just finished the build and it sounds awesome
Ist better clean than my deluxe reverb
Bit flubby on the bass but thats how the jtm rolls i think.
Was not approved because i saw it nowhere back.
Just looked at my inbox and here it is.

I use KT66
But the output tranny is already installed.
The guy (local MM dealer) installed it for me.
And he made it switchable from 8 or 16 ohm.
It works great
Just finished the build and it sounds awesome
Ist better clean than my deluxe reverb
Bit flubby on the bass but thats how the jtm rolls i think.
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- Senior Member
- Posts: 1580
- Joined: Mon Jan 07, 2013 9:34 am
- Just the numbers in order: 13492
- Location: Front Row Seat From the Outer Continental Shelf
Re: help with Wiring Mercury O45RS-L
Glad to hear it. Definitely one of the least know secrets to some serious tone. EL-34's or the KT's. 

________________________________
I SEE THINGS BETTER, WHEN I LISTEN
http://www.soundclick.com/bands/default ... ID=1214336" onclick="window.open(this.href);return false;
I SEE THINGS BETTER, WHEN I LISTEN
http://www.soundclick.com/bands/default ... ID=1214336" onclick="window.open(this.href);return false;