switch the output transformer leads. Reverse them and it should solve the problem

Youre amp doesnt have PAB? Thats what it's for

Im going to advise against a 4x12 not only b/c of the size but also the 4x12 is actually the worse speaker design. The only reason it exsists is because in the 60's Jim Marshall made 100 watt amps but only had 25w speakers. The 4x12 design has a muddy bass and tends to beam treble so you get in your face peircing treble in front of the amp but theres a drastic drop off if you move to the side.

Someone on another forum was claiming that he got more bass from a ported 2x12 than a 4x12 with the same speakers. if one 2x12 isnt enough you could build two and you'd wind up with much better bass response since all 4 of the speakers will be "on the floor" the 2 top speakrs in a 4x12 design would be trying to push the bass through the air which does not travel far. Bass likes walls and floors to travel through thats why you never see subwoofers off the ground.

Doing some jamming on my ceriatone with my band. Please excuse the bad camera shot, we didnt relize we had the camera aimed wrong.

+1 but not only are the caps burning in but the tubes, transformers, and resistors also play parts in the burning in. IMO anyone who puts burning in the same category as "snake oil" is stubborn. There IS a noticable difference in not only tone but also feel.

Speakers also require break in but that is a different story with the cones

Nik claims that if youre not skilled enough to build the amp with the layout then you should probably try an easier kit.

Yes Schematics are great for following the circuit more easily but when building an amp it's easier with a layout because you can see exactly where everything should go on the board and chassis etc. It's also easier to share mods when they are on the layout

i think you should try el34's or KT77's before you go into modding

+10000

In fact im sure the tech asked for the schematics because he didnt know the layout was available. Nik does not use schematics so if you want one youre going to need to draw one. Which IMO is pointless because layouts show the actual amp in detail which makes modding much easier

IMO the bluesmaster sounds more "dry" and "lifeless" to my ear. Also i strongly dislike 90% of fenders because they are too scooped. The best cleans ive heard came from a Hiwatt, 74 Marshall JMP, and Fender Bassman (59) and the OTS (in no particular order)

the cleans are very nice IMO. But yes you are right. Why would you buy it as a clean amp with the ever so important OD channel which is the magic of this amp.

If you want nice cleans get a twin or something. If you want nice cleans and awesome Overdrive get an OTS

have you tried a different tube yet?

+1 im a bigger fan of the skyliner stack in the OTS

regardless klein makes awesome pickups. i have a set in my tele

try the power supply in different places there might be some sort of ground loop. Also if theres any slider light switches in your house keep them off they make a TON of noise, especially with those "energy saver" flourecent lights

the unit is meant to be always on. Thats why you get no volume when your turn it off because well, youre turning it off. It takes about 6 second because of the tube "cool down"
also if your using the C lator and K lator at the same time, DONT. this could easily be the source of your noise.

If youre still getting noise it is likely a bad tube in the Clator.