I bought a used Peavey 410 VTX and it makes a `farting`noise for about two or three minutes and then comes out of it. I thought one of the speakers was blown but then it stopped so I`m thinking it`s in the cross-over, electronics part and it has to warm up.... My question is, can I by-pass everything and hook the four 10`s directly to a quarter inch jack. I have the tweeter knob down all the way, so loosing it is not an issue.