Originally Posted by: William MG

Originally Posted by: fuzzb0x

Originally Posted by: William MG

Yes, I am really enjoying it Fuzz. When I do run a pedal, I run my Boss Blues Driver more than any other. I haven't biased it and although I read online that Fender tends to set the bias a bit on the cold side to provide longer life to the tubes, I don't think I will touch it. Maybe after a few months of playing, but for now I am happy with it as is. If I do anything, it would be only to get a bench mark read on what the bias is now.

You will have to give us details on potential mods to your Jet.

The Jet City amp I have I'll be doing a couple of things to, I've bought a choke to install in it, I'll also be changing the plate load resistors to some higher quality ones. Both of those mods should make it perform quieter at high volumes and if needed I may cut the traces on the PCB that supply the filament heater voltage and install wires twisted in a hum cancelling method, so a few things to do to it when I get a spare day but I think it will be well worth doing.

You're over my head here but that's ok. This is how we learn. I'd be interested in what a choke does and what a plate resistor is and does.

No problem William MG, the choke is there to help smooth out any ripples left after the AC has been converted to DC by the rectifier stage and the plate load resistors create a voltage drop on the plate of the tube when current is flowing through the tube. But without getting into too much detail which would really be best placed in a thread of it's own it's also connected to the B+ power supply so at high volumes with a decent amount of gain they can be a bit noisy on some amps, this isn't too much of a problem most of the time and will only be noticeable at high volumes but I only use this Jet City amp as part of my recording rig so I want it to be as silent as possible, plus I enjoy tweaking my gear so it's just an excuse for me to open the amp up really

Here's a link to some good reading if you decide to learn a bit more on how tube amps work

https://robrobinette.com/Amp_Stuff.htm