Cordwangle Posted December 11, 2017 Share Posted December 11, 2017 Just a heads-up for anyone buying a GK MB/MBP cab from USA - which I did a few weeks ago as I was unable to source one (MBP115-11) from any UK outlets. My cab arrived within a week (well done FedEx) but was 115Vac type; I emailed the relevant fella at Sam Ash, Miami & he just said that I should buy a converter (step-down transformer)..! I wanted some sort of refund - he offered $25......I refused & we had a few more exchanges. Then, I decided to open up the amp section of the cab (I'm a qualified electronics engineer btw) to check for a voltage selector & on the PSU/amp board was a jumper enabling either 115 or 230Vac....! I moved the jumper to 230Vac position & all is good - cab works fine on UK voltage supply. I hope this info will be of some use to someone finding themselves in a similar situation :-) Cheers, Paul Quote Link to comment Share on other sites More sharing options...
machinehead Posted December 11, 2017 Share Posted December 11, 2017 That's useful information. Now you can claim your $25 too. Frank. Quote Link to comment Share on other sites More sharing options...
bazzbass Posted December 12, 2017 Share Posted December 12, 2017 So a qualified electronics engineer bought an amp from the USA and EXPECTED IT TO WORK ,AS IS ,IN THE UK??? really? 1 Quote Link to comment Share on other sites More sharing options...
yorks5stringer Posted December 12, 2017 Share Posted December 12, 2017 (edited) To be fair, some Amps have a multiple voltage input transformers (might have the wrong term here) that enables use across the world without fiddling about in the back of the Amp. Edited December 12, 2017 by yorks5stringer Quote Link to comment Share on other sites More sharing options...
Lardy Posted December 12, 2017 Share Posted December 12, 2017 Thanks Cordwangle. Related but not quite OT - as we're due to return to the UK next year, you prompted me to look into my gk mb500 fusion. I bought it here in the US, used, when the pound was doing well and I needed to know if I can convert it or if i need to sell it. I found two jumpers (blue one and black one) and seemingly obvious alternative "230v" positions - which means I can keep the amp (it will still have the 110v notice printed on the amp body, but I'll just put a sticker on it). Caveat: when I do it, I shall have a good look round to see if I missed anything, and I shall avoid those dangerous-looking capacitors. I love this forum, great info, banter etc. So 'hope this info helps someone. Should I post it as separate topic? J Quote Link to comment Share on other sites More sharing options...
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