Jose Plexi mods

[Spencerleehorton]

Yeah I have a 250R 1w pot so I will try this and see if it improves a little

 

[Spencerleehorton]

I thought i had a 250 ohm 1 w pot but it was a 100R wirewound, ive added 47R to each leg and it does reduce hum a fair bit, only thing is its all over one side?
would i need to make the resistor bigger? 75 ohm on each side? or is it ok to have it turned all one way?

 

[Spencerleehorton]

I might remove the two 47R resistors and see if it improves

 

[Spencerleehorton]

the Humdinger doesnt really seem to do much with 100R pot, i'll wait for the 250R to arrive then try again.
Also looking at the OD channel to make it less lower mid heavy, ive installed the depth control now and this gives great control over the bass but the mids need a bit more help getting through so thats my next step.
going to look at byassing the2.2nf cap and listen to what influence it has, also the 1nf cap on the OD gain at switching this in and out at the moment does seem to do anything, so probably a mistake in wiring again.
Also going to look at cathode resistors and bypass caps.

 

[Spencerleehorton]

This next SLO-50 build will hopefully be much more accurate to the original.

 

[Alva Goldbook]

You should build a Fender Champ or 5e3 instead. The most common mistake made by new builders is building level 10 difficulty amps before they’ve mastered their skills well enough to execute it.

 

[Spencerleehorton]

Already built one Alva, sorry not everyone’s as good as you bud!! Merry Xmas, will get there one day!!