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Username: jix

Post Number: 38
Registered: 1-2009
Posted on Wednesday, March 03, 2010 - 4:12 pm:   Edit Post

Hi All,

I've recently bought a second hand SF-2 (Serial no 901141), shipped over from the US to UK that came with it's original US power supply.

As I'll be using this in the UK I was wondering:

Is there anything that needs to be done inside the SF-2 to allow it to run on UK mains power?

The US power-supply with it is a 15vdc, 200ma supply - this is really hard to find in the UK it seems; is there any flexibility in this supply or does it have to be exactly that voltage and ampage? (sorry if that's a bit of a dumb question!)

Really appreciate any help anyone could give me.

Many thanks
Senior Member
Username: jazzyvee

Post Number: 1875
Registered: 6-2002
Posted on Wednesday, March 03, 2010 - 5:46 pm:   Edit Post

Hi, James, you can always try one of these. 100w UK to USA Voltage Converters.
I got one years ago to power my Samson wireless transmitter as it too was a USA Purchase and needed 110v.


Intermediate Member
Username: jimmyj

Post Number: 168
Registered: 8-2008
Posted on Wednesday, March 03, 2010 - 8:54 pm:   Edit Post

Hey James,

If I understand correctly, the power supply for the SF-2 is external? If that's the case, there's nothing you can change inside the unit to alter its power requirement. It wants to see 15vdc at the connector...

I am not familiar with the included power supply but before you buy anything read the fine print on it - if it says input: 100-240vac then it is a universal unit and all you need is an adaptor plug (or cable if it has a detachable AC cable). If it says input: 117vac then you need another supply, or as Jazzyvee says, a step-down power transformer. The end result needs to be 15vdc with a minimum of 200ma. Something like this:

Congratulations on the new acquisition, I'm sure you'll get it fired up soon.
Jimmy J
Senior Member
Username: keith_h

Post Number: 1527
Registered: 2-2005
Posted on Thursday, March 04, 2010 - 5:10 am:   Edit Post

Jimmy pointed you to an adapter that should work.

An important thing to keep in mind when you get a new adapter is which contact on the connector is positive and which is negative. If you mismatch these with the SF-2 you will damage the SF-2. If this is not displayed on the unit some one else here should be able to tell you what polarity the SF-2 requires.

Senior Member
Username: elwoodblue

Post Number: 1008
Registered: 6-2002
Posted on Thursday, March 04, 2010 - 11:48 am:   Edit Post

Here are the specifics from the FAQ.
Username: jix

Post Number: 39
Registered: 1-2009
Posted on Sunday, March 07, 2010 - 1:43 pm:   Edit Post

Hi everyone.

Thanks very much for all the help on this - I haven't had a chance to go and buy the adaptor but I'll let you know how I get on when I have.

Really appreciate all the help.

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