I'm using a 2x12" RK Cab. I'm only using the closed back V30 side. Primarily because I like to keep my stage volume lower and must use a hotplate. If I had two hotplates I would be using the C90 for my cleans and the V30 for my distortion channels.
Whether current is traveling through a PCB trace or a wire it really doesn't matter. Most of the current I believe travels on the outside of the wire anyways. Although I believe this is only true for an AC signal... which is what your audio signal would be. DC travels throughout the whole...
Well first off they are two different numbers :roll:
Basically the 4 ohms on the amp is the minimum load of what the amp needs to see from the cabs in order to work right. :)
If you pull 2 tubes I believe you would change from the 8ohm jack to the 16ohm... or if you were using 4ohms at 100 watts... you would go to 8ohms for 50watts.
I've never done it... but I think this is what I read some time ago.
If you plug a 16ohm cab in the 4ohm output of the amp this impedance mismatch is safe and is fine. If you plug and 4 ohm cab into the 16ohm output of the amp it would be bad for the amp. 8)
4 or 5 years... I would change all the tubes.
You CAN buy any 6L6 tube, but it might night be in the bias range Mesas are set for. I would get all new Mesa Tubes or get the proper match from another brand like Ruby, JJ, etc.
Also remember when a solid state device clips... it Hard Clips!!... meaning it cuts off the power sharply. A tube will still remain somewhat linear and continue to output more power. This is why you don't use a 100 watt cab on a 100 watt amp. It can be hard on the speakers because of the...
Well you are moving less air with a 2x12, as compared to a 4x12. This is probably why is is a little quieter. The speaker load impedance shouldn't make a difference in terms of volume as far as a 4 ohm load or an 8 ohm load, etc.
I'm using an SPAX7-A in V1, I didn't really notice much of a tone change... really its just a regular 12AX7 that has been tested for its superior resistance to microphonics.