Double Bass Annoying noise with Wizzy 10

[Rebo213]

Hello,
Last week I played a gig on thursday with my Wizzy 10 and my iAmp 500, carved db with a revolution solo II. Good sound, no problems.
Yesterday I went to the rehearsal room and I notice an annoying noise coming out the speaker. It is like a distortion on most notes, but clearly on E and g strings. I removed the grill to check if the cone broke, its o.k. I tried at home with an electric bass and the noise dissapear, it is only when I play db. I checked the iAmp with my other cab, a Glockenklang 212 and sounds perfect.
I am now going nuts about it. Tommorrow I´ve got another gig and I don´t want to carry my ol´and heavy glock to it. Any ideas? Its my wizzy dead?
Thank you all

 

[Rebo213]

Well, after a while I think the problem was in the revolution solo cable. The glockenklang, I suppose ´cos it can handle low end better than the wizzy don´t produce that rattling noise, and thats why I blame the wizzy. Its a sort of low distortion, and the hifi character of the wizzy just reinforce it.
Anyway, tommorrow I will carry both cabs to the gigs, just in case.
Case solved, for now...