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Post subject: 110 vs 220
Posted: Sun Nov 23, 2008 7:52 pm
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Location: Berlin, Germany / Cairo, Egypt / Bethesda, MD
Hi All

If I take my Blues Junior US model 110V/ 60Hz amp to a 220V/50Hz country will it work well with a step up transformer?

All experiences and suggestions welcome
Peace
HS


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Posted: Mon Nov 24, 2008 10:24 am
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No you need to step down from 220-240 down to 110. When i was in the us i found hardly any difference stepping down. You do have to be carefull to watch out for ground loops and other things that can cause a nasty hum but you should be ok. You may even find that the transformer regulates the power to your amp and improves tone by making the powerflow more constant. Thats not a fact only a vague suspicion though.
Where are you going to Hirsham? I thought only the UK and AUS used 240v.

Spend some on aquality transformer and you should be ok.


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Posted: Mon Nov 24, 2008 11:03 am
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nikininja wrote:
No you need to step down from 220-240 down to 110. When i was in the us i found hardly any difference stepping down. You do have to be carefull to watch out for ground loops and other things that can cause a nasty hum but you should be ok. You may even find that the transformer regulates the power to your amp and improves tone by making the powerflow more constant. Thats not a fact only a vague suspicion though.
Where are you going to Hirsham? I thought only the UK and AUS used 240v.

Spend some on aquality transformer and you should be ok.


Thanks Nikininja
Yup I was mistaken .. I need a step down transformer, I dont know how I'll get around the grounding issue, most sockets back home in Egypt are equiped for two prongs only.

Actually Electricity in Egypt is 220v as well .... but 50 Hz. I remember in the early 70's we brought back a US made 110v/60Hz turntable but the different in cycles pm made the turntable unusable.

I was hoping that that that would not be the case in an amp given that it doesnt have a motor.

Peace
HS


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Posted: Mon Nov 24, 2008 11:37 am
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If you buy a american amp you shouldnt have to worry about ground loops. Their 2 pronged aswell. I cant see em having a earth/ground.


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Posted: Mon Nov 24, 2008 1:30 pm
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My American (actually Mexican made) BD is polarized 3 pronged and has to be to meed UL / CSA certification.

1 prong is flat blade and narrow
1 prong is flat blade and slightly wider
1 is round (the ground)

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Posted: Mon Nov 24, 2008 2:54 pm
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My Blues Junior is also three pronged ... but I'm sure I'd be able to find a way to install a three pronged socket with grounding loops in the room where I have the amp.

So far I've only seen them for large white goods like washing machines and fridges.... have to find a way unless of course I develop a likeing to playing guitar in the bathroom or kitchen :lol: :lol: :lol: :lol:

cheers
Hisham


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Posted: Mon Nov 24, 2008 4:30 pm
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I play mine in the kitchen. It sounds nice with the sound bouncing around off the wall and floor tiles.


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Posted: Mon Nov 24, 2008 5:24 pm
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You can get an adaptor - 3 prong to 2 prong very cheap. In the U.S. we are always running into that problem-3 prong plug with a 2 prong outlet. You can break off the third prong, it's not nessesary, a lot of people do it. However, I don't recommend it; it is much safer with the third ground (lightning, ground faults, etc.).

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Post subject:
Posted: Mon Nov 24, 2008 6:06 pm
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Yup I already have the adapter ... but I'm still in the US so I haven't tried it yet... don't know if the missing ground prong would increase noise.
Cheers
Hisham


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