Volume and high end cutting out

[adwhyatt]

Hi, I have an SV1 88 reverse and recently i've noticed that most of the time (75%) of my last 2 gigs the volume has been very low and the sound not great, as if the top end frequencies are lost. Initially I thought it was the tweeter on my speaker playing up but I've just used a new speaker and the problem is there again. Occasionally it comes back, almost like there's a loose connection or something.

I'm using the L/R jack in mono - I'll try the XLR and headphone, but i suspect it's something internal rather than the jack socket - i wiggled it a bit and it had no effect.

Anybody experienced anything like this?

Thanks in advance

[voip]

Something similar happened here. It turned out to be a dirty jack connection.