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230v 50Hz Marshall amp ok to use in US?

Cliff Gress

Well-known member
Joined
Aug 26, 2004
Messages
3,068
My JTM1C says 120v 60Hz. Will I need a step down converter or perhaps some sort of adapter to use a 230V 50 Hz Marshall here in Michigan?

Thanks gents and Happy Easter.
 

GreenBurst

Member
Joined
Mar 5, 2004
Messages
725
My JTM1C says 120v 60Hz. Will I need a step down converter or perhaps some sort of adapter to use a 230V 50 Hz Marshall here in Michigan?

Thanks gents and Happy Easter.

Yes. But first check if there is a "Mains" switch on the back of the amp to change to 110V (or 120V) 60Hz. If so, set to 110/120V and you are good.

What model is it? Pics?
 

TM1

Well-known member
Joined
Jun 27, 2003
Messages
8,101
You should be fine if you have the Mains selector on 110/120v or use a step down tranny. Those Mains tranny are just usually the same but wired differently internally.
 

)2azer

Member
Joined
Nov 17, 2009
Messages
52
My JTM1C says 120v 60Hz. Will I need a step down converter or perhaps some sort of adapter to use a 230V 50 Hz Marshall here in Michigan?

Thanks gents and Happy Easter.

Look on the back of it man it tells you. On that model you have to change the fuse. :dude:
 

TM1

Well-known member
Joined
Jun 27, 2003
Messages
8,101
The Mains transformer in that amp was made to work on 120v & 220-240v. It just has to be configured(wired) inside on the tranny. There's not an external switch for selecting voltage on this model. But the schematic shows it being able to be wired in either 120v to 240v. The 120v side uses 1/2 the tranny & the 220(up to 250v) uses all of it.
 
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