xT00BZRG00Dx said:
Ok, thanks. Does it matter where I put a preamp tube or can I just put any wherever (in the amp). I was trying to put the one with the cover in there, but I couldnt get to it, and I bent my pins. While trying to bend them back, two snapped off so I got pissed and threw it on the ground and it shatters. And now my amp puts out no sound. Should I take it to a tech to replace them, I don't wanna f anything up like the incident in which I just informed you. This is my 3rd tube amp. My first I got in November, broke in Janurary, so I bought a new one but it sucked so I returned it and bought my Mark III. I've never replaced tubes (or even taken them out until now)
The tube in V1 (closest to input jack) has the greatest overall affect on tone. The one with the cover should be V1. V5 also has a global impact on tone, but not as profound as V1. Slots 2-4 control other aspects of the amp (R2, R3, reverb, etc..). The manual may contain this information. Here's the link: http://www.mesaboogie.com/manuals/Mark%20III.pdf
If you own a tube amp, you MUST be able to replace tubes. It's as basic as putting oil in your car. It's pretty easy to replace preamp tubes, it just requires a little patience. You'll notice the tube has one spot without a pin. The socket also has a corresponding slot with no pin accepter. Just make sure the two are lined up and you'll be fine. If you're not sure, you can pull the next tube and observe the location of the blank slot. In my experience, the tube sockets are arranged with the same pin order, meaning the blank slot should be in the same relative location on all tube sockets.
Power tubes are a little different as they contain a key on the center pin that will line up with the keyway on the tube socket.