coxswain Posted January 14, 2010 Share Posted January 14, 2010 Hey guys I could use some advice about what may be wrong here. I have an amp which has a ridiculously loud buzzing soundcoming from the speaker when switched on. It sounds almost like a small engine revving or something like that. It’s really loud and starts immediately when switched on. The head is an Ashdown Mag 300 EVOII and the cab is a Peavey 115 Black Widow. I bought both 2nd hand on ebay. I bought the cab a while ago and when I picked it up I tried it out on one of the seller’s amps and it worked fine. No buzzing at all. The head just arrived today in the post and is supposedly only a few months old and in good condition. There are two speaker outs on the back of the amp and I tried plugging the speaker into both of those with the same result. The cable I use is one of these, which I bought brand new: [url="http://www.dolphinmusic.co.uk/shop/flypage/product_id/41465"]http://www.dolphinmusic.co.uk/shop/flypage/product_id/41465[/url] Has anyone had a similar problem? And what can I do to try and narrow it down and find out where the problem lies? I don’t have any other speakers or amps lying around so I can’t try the ol’ switcharoo. I do have guitar cables though, so can I try a guitar cable instead of the speaker cable to see if that is the problem? I know using guitar cables for amps is a no-no, but will it damage the amp (further ) if I just switch it on for a few seconds Whew, there it is. Sorry for the long post, could really use some advice Cheers! Quote Link to comment Share on other sites More sharing options...
obbm Posted January 14, 2010 Share Posted January 14, 2010 I had a similar effect when I blew-up the power supply of my Ashdown ABM500. I strongly recvommend that you take it to a Tech and get it checked. Where are you? Quote Link to comment Share on other sites More sharing options...
BOD2 Posted January 14, 2010 Share Posted January 14, 2010 Other than checking that the earth wire inside the mains plug has not come adrift, there's not much you can do other than have a tech take a look at it. Quote Link to comment Share on other sites More sharing options...
coxswain Posted January 15, 2010 Author Share Posted January 15, 2010 No the mains plug is fine, guess I'll have to take it to a tech then @obbm I'm in Bristol, know any good techs in this area? Thanks for the help, guys Quote Link to comment Share on other sites More sharing options...
obbm Posted January 15, 2010 Share Posted January 15, 2010 [quote name='coxswain' post='713754' date='Jan 15 2010, 01:57 PM']@obbm I'm in Bristol, know any good techs in this area? Thanks for the help, guys[/quote] Not my area I'm afraid but there are plenty of Bristol based members here. The other alternative is to get it back to Ashdown. Quote Link to comment Share on other sites More sharing options...
Protium Posted January 15, 2010 Share Posted January 15, 2010 From past experience it sounds like the power transformer. Easiest and best option is to send it to Ashdown. Quote Link to comment Share on other sites More sharing options...
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