I have recently come to discover that the main tranformer for my OR120 is what needs replacing. The guys at Orange said they didn't have what I need, but to try MOJO music...MOJO said they couldn't help me either, but suggested that I may consider using a tranformer from a Marshall (although they couldn't tell me what model, etc). My question for you is if you know of anyone or anyplace that I might be able to get the main tranformer that I need for my 90's OR120 or if a Marshall tranformer is compatible, and if so, what model? Please send me an e-mail if you have any suggestions. I would really appreciate it! Thanks! Dennis...
[email protected]
Where to get a main transformer for 90's OR120?
Moderator: bclaire
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- Tiny Terror
- Posts: 88
- Joined: Fri Apr 26, 2002 1:57 am
- Location: USA
I'd ask the guys at Plexi Palace. They should be able to get it or know someone that can. http://www.plexipalace.com/
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- New Member
- Posts: 38
- Joined: Mon Apr 29, 2002 10:01 am
- Location: Belgium
Mains transformers are not critical for your sound. You only have to be sure that it can supply enough power, so any replacement transformer that supplies the correct voltages and enough current will do.
In the schematics you will see what you need:
- the primary has to have at least your mains voltage. If it has more taps, that's nice but not necessary. You can leave the mains switch unwired, you don't use it normally anyway.
- 360-0-360 V secondary (is the same as 720V with center tap
- 100V secondary to make a negative supply voltage.
- 6.3V filament secondary: Make sure this can supply enough current for 4xEL34 and 2xECC83/12AX7. Something in the range of 6 to 7 A will do.
Many Marshall replacement transformers will do. There are several suppliers on the net for replacement transformers. Check your search engines for a dealer near you.
Good luck,
G.
http://www.geocities.com/geertjacobs/orange_page.htm
In the schematics you will see what you need:
- the primary has to have at least your mains voltage. If it has more taps, that's nice but not necessary. You can leave the mains switch unwired, you don't use it normally anyway.
- 360-0-360 V secondary (is the same as 720V with center tap
- 100V secondary to make a negative supply voltage.
- 6.3V filament secondary: Make sure this can supply enough current for 4xEL34 and 2xECC83/12AX7. Something in the range of 6 to 7 A will do.
Many Marshall replacement transformers will do. There are several suppliers on the net for replacement transformers. Check your search engines for a dealer near you.
Good luck,
G.
http://www.geocities.com/geertjacobs/orange_page.htm
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- New Member
- Posts: 38
- Joined: Mon Apr 29, 2002 10:01 am
- Location: Belgium
CORRECTION!!!!
The High Voltage secondary should be 180-0-180 (360 w center tap)
and not 360-0-360 as stated above.
speed error.
G.
http://www.geocities.com/geertjacobs/orange_page.htm
The High Voltage secondary should be 180-0-180 (360 w center tap)
and not 360-0-360 as stated above.
speed error.
G.
http://www.geocities.com/geertjacobs/orange_page.htm
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