Bare Knuckle Pickups Forum

Forum Ringside => Guitars, Amps and Effects => Topic started by: everton_fc on September 09, 2008, 12:38:58 PM

Title: Stepdown Transformers from USA to UK voltage
Post by: everton_fc on September 09, 2008, 12:38:58 PM
Anyone recommend a good stepdown transformer to run USA pedals on UK voltage. I was told that using a stepdown transformer may result in a better tone.... anyway the pedal I'm using says this for the power:

15VDC (400mA) PSU connection.

Any suggestions?  Thanks
Title: Re: Stepdown Transformers from USA to UK voltage
Post by: Brow on September 09, 2008, 12:52:21 PM
I've never had a problem running pedals from the USA with 'normal' pedal power supplied.

As long as the voltage, current and polarity are correct for the pedal, I don't think it matters as far as I know.

I can understand it for amps; USA amp runs at 120v, UK amp runs at 220/240v. I don't think it matters so much with something as low as 9v - 15v
Title: Re: Stepdown Transformers from USA to UK voltage
Post by: dave_mc on September 09, 2008, 01:48:39 PM
can't you just buy the UK version of the power supply? or am i missing something?
Title: Re: Stepdown Transformers from USA to UK voltage
Post by: FELINEGUITARS on September 09, 2008, 02:31:40 PM
TONEBONE USE A 15V ADAPTER and so do many of the pedals using small valves inside
Title: Re: Stepdown Transformers from USA to UK voltage
Post by: Will on September 09, 2008, 03:17:48 PM
I thought that with pedals, the transformer was often in the lead, and amps have the transformer inside? thats why they use a kettle lead
Title: Re: Stepdown Transformers from USA to UK voltage
Post by: th3sku11 on September 09, 2008, 04:21:21 PM
I would have thought that since its DC it wouldn't matter what the source is - whether its being transformed and rectified from 240V AC or 120V AC down to 15V DC as long as the power supply for the pedal matches the country's mains and it supplies the correct output for the pedal.

So if its an American PSU you've got as dave_mc above says you're probably better getting the UK version...
Title: Re: Stepdown Transformers from USA to UK voltage
Post by: Roobubba on September 09, 2008, 05:08:07 PM
Not sure if I should put this in a new topic or not, but I have an ISP decimator prorack G and am currently using an AC adapter I got from Maplin. TBH I think it's probably the cause of some noise, and was wondering if I could just use the US adapter.
How do other people here power their proracks?

Roo
Title: Re: Stepdown Transformers from USA to UK voltage
Post by: 38thBeatle on September 09, 2008, 07:23:15 PM
My BBE Sonic Stomp was bought in the USA and I use the US power supply with a transformer I bought from t'interweb. Works fine. Transformer cost me around £5.00 I believe.
Title: Re: Stepdown Transformers from USA to UK voltage
Post by: Spitfire on September 09, 2008, 07:44:58 PM
as has been said the transformer in a pedal is external to the pedal in the psu... so the pedal you buy in the USA is exactly the same to a pedal bought in the UK.. just the wall wart will be different if you choose to power that way.

it would be a step up transformer you would need to go from usa to uk voltage... 110 to 230... but thats only when the transformer for the device is inside the item and would normally plug it straight into the AC that comes from the wall.
Title: Re: Stepdown Transformers from USA to UK voltage
Post by: dave_mc on September 09, 2008, 09:38:18 PM
I thought that with pedals, the transformer was often in the lead, and amps have the transformer inside? thats why they use a kettle lead

yeah, i think so. definitely check with someone who knows more than me, though. :lol:
Title: Re: Stepdown Transformers from USA to UK voltage
Post by: HTH AMPS on September 10, 2008, 12:39:34 PM
If the pedal wants 15vdc, then it doesn't matter whether you get that from a UK wall wart at 240v or use a US one with a step down transformer to drop the mains down to 110v.

I personally would just use a 240v UK wall wart then you're sorted for good and won't be screwed when you forget the step down transformer at a gig (and you will forget at least once).
Title: Re: Stepdown Transformers from USA to UK voltage
Post by: Roobubba on September 10, 2008, 03:42:12 PM

How do other people here power their proracks?

Roo

Quoted above but maybe not obviously enough as a question.


How should I be powering my AC adapter to minimise the noise? Use the US transformer/power cable that came with it, or use a UK one?
My current one was pretty cheap and nasty and I'm not sure if it's the cause of some excess noise in this unit or not...

Please help!

Roo
Title: Re: Stepdown Transformers from USA to UK voltage
Post by: horsehead on September 10, 2008, 08:06:01 PM
I'm looking at getting an MXR carbon copy from america, but can I use it with my power brick without blowing the thing please?


I'm thick, humour me
Title: Re: Stepdown Transformers from USA to UK voltage
Post by: Will on September 10, 2008, 08:16:14 PM
I'm looking at getting an MXR carbon copy from america, but can I use it with my power brick without blowing the thing please?


I'm thick, humour me

Yes, as said before, pedal internals are the same.
I want one. My girlfriend couldn't find one in USA when she went.
Title: Re: Stepdown Transformers from USA to UK voltage
Post by: horsehead on September 10, 2008, 08:31:00 PM
ebay is your friend

MXR Carbon copys on ebay (http://desc.shop.ebay.co.uk/items/_W0QQLHQ5fPrefLocZ2QQ_fromZR46?_nkw=mxr+carbon&_sacat=3858&LH_TitleDesc=1&_fromfsb=0&_trksid=m270.l1313)
Title: Re: Stepdown Transformers from USA to UK voltage
Post by: Will on September 10, 2008, 08:55:39 PM
Yeah, its just that extra customs charge that I ALWAYS get hit with.

e.g. my MXR GT OD from USA.
Title: Re: Stepdown Transformers from USA to UK voltage
Post by: horsehead on September 11, 2008, 07:25:45 AM
I know what you mean, but even at those prices the charge is still cheaper than buying over here
Title: Re: Stepdown Transformers from USA to UK voltage
Post by: timski on September 12, 2008, 10:30:47 PM
No, you don't need a step up transformer to run US pedals.
I use mostly US boutique pedals and run 13 of them on a pedalboard using a single Visual Sound 1Spot adaptor. No noise or reliability problems whatsoever.