GUITAR AMPLIFIER BUILDING BASICS EP. 03 

Glad it was helpful!

It is a common value. In a Fender hi lo input it halves to 33k. Much above 22k is superfluous. I like 10k myself. But if you want to smooth out an amp, a higher grid stopper value can take the edge off.

@@atech9020 I have seen information relating to a 10k with a 250pf to ground (LPF), effectively giving the same LPF as a 33K on its own (33K + Valve grid capacitance of 110pf). Your thoughts ?

@@GazCal This is very true what you speak of. My thought is that you now have two components instead of one. Cost not being an issue, the time aspect for the same result makes no sense. Another angle on it is that every single filter pole you introduce, adds a phase shift. So with the Small Pf to ground and the small Pf to the Anode, you have two filter poles. So how much does that shift the phase of the incoming signal? And it has 1 extra part to boot. Which is best, is up for debate. The cost is higher two fold for one, over the other. No more, no less.

@@atech9020 understood, but does the lower 10K resistance benefit in anyway as the grid stopper instead of the 33K, other than as in use as the LPF ? I’m thinking lower resistance, stronger signal/voltage to the grid 🤷🏼‍♂️…. I’m no electronics tech, all new to me.

Lots of time on YT and 20 years of just doing it. I am no scholar at it, but I know enough to share the knowledge. Most of what is say is not scripted, so it doesn't always come out right.