Hissy head

[thunderider]

Iv just on to sort my gear out plugged in and the amp has developed a hiss even when guitars not plugged in its a bit better if i bypass EQ any ideas?? It was ok last week???

[Mr. Foxen]

What head? Describe signal chain. Tweeter in cab?

[thunderider]

Its a laney dp 150 but i think it may be the power out put as that cracles if u move plug, but the hiss seemed to kinda get better as i played.asfor signal chain im going straight from bass to amp i have no fx, but what did concern me was rhe smoke from the back when i plugged my 2 cabs in a115 and 118!!!! But also inputs and out put jacks crackle and cut out....maybe it needs a good service!!

[thunderider]

DOH! smoking head....8 and 4 ohm cabs dont go in to a 4 ohm head.....gives me 2 ohms!!! thats that one sorted!!