I used a Warwick Sweet 15.2 combo last night for the first time, I bought it used from a dealer on ebay a few weeks ago, but apart from a quick test in my living room, this is the first time it was gigged.
I noticed quiet a loud crackle from it which was also heard by the other band members.
It was only present when the bass was playing, as soon as I stopped then the crackle stopped.
I did try another lead but it didnt help.
This was an intermittant fault it didnt happen all the time.
Any ideas what it could be??