Online videos and forums are great sources of information however some of the deemed boring “safety elements” may be omitted which are crucial. We do not recommend any work is carried out unless you are competent and have worked on electronics.
Valve amplifiers can deliver a lethal voltage when opened up. This makes it easier for a competent musician to change them without too much difficulty. Amps like Mesa / Boogie however are generally fixed bias and you buy MESA tubes which are tested to comply within the manufacturer’s tolerance and as such should never need biasing. The output valves often the larger ones that generally come in sets of 2,4,6 should be replaced in associated quantities as they work together to push and pull like a tug of war. It’s important to notice where the missing pin is as this is the alignment to ensure the right pin is doing the right function. Replacing the valves is straightforward, relatively… the smaller tubes often marked 12AX7 / 12AT7 or ECC81 or EEC83 can simply be swapped out without any worry or need to rebias.
0 kommentar(er)
