coffee_king Posted January 7, 2015 Share Posted January 7, 2015 Hi Guys Before I take this to my usual repair guy I thought I'd drop a quick post on here to see if anyone has any thoughts on a home repair? My Ashdown ABM500H seems to me creating quiet a lot of hiss. (Its not due to having the treble up high) Its also coming out of the DI (Its very annoying in my IEM) so it wont be the cab. Now of course its not noticable once the band all kick in, but it is very hissy. Any thoughts on whats up with it? I'm using it with an Ampeg SVT 410HE by the way. Cheers dudes. Quote Link to comment Share on other sites More sharing options...
rogerstodge Posted January 13, 2015 Share Posted January 13, 2015 This may help you matey. http://basschat.co.uk/topic/51381-noisy-hissing-ashdown-abm-500-rc-evo-iii-head-is-this-normal/page__fromsearch__1 Quote Link to comment Share on other sites More sharing options...
MoonBassAlpha Posted January 14, 2015 Share Posted January 14, 2015 Is there a snake trapped inside? Quote Link to comment Share on other sites More sharing options...
RAY AGAINST THE MACHINE Posted January 15, 2015 Share Posted January 15, 2015 Have a bump. , as I can't offer any advice here , other than not to play any white snake . Quote Link to comment Share on other sites More sharing options...
coffee_king Posted January 22, 2015 Author Share Posted January 22, 2015 So, I took this into Steve at Musical Electronic Repairs & Spares (Within Madhouse Rehearsals in Birmingham) and he's sorted it. All it was apparently was the valve was seriously on its way out (I guess I should have checked this out myself first). So now theres no hiss at all (apparently) But anyway its fixed now and I'm picking it up later, so will review it shortly. Thanks for yoru advise everyone. Quote Link to comment Share on other sites More sharing options...
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