Just realised that I never posted a regular vero layout for one of my favourite guitar effects - the Matsumin Valve Caster.
It doesn't require power filtering, so you could easily drop the 100ohm resistor and 100u cap. The Valve Caster was one of my first builds, and it doesn't have any power filtering and is super quiet.
MATSUMIN VALVE CASTER - MOJO COMPONENT VERO LAYOUT
MATSUMIN VALVE CASTER - VERO LAYOUT
thanks for the valve casters, ive built a ruby tuby (with a 12ax7 ) but not the valve caster
ReplyDeleteHi Colin - I still haven’t got around to making an amp. Might just be another giant rabbit hole for me.
DeleteThere’s a few layouts that I forget that I’d made and never posted. This was one of them.
Hi, i have also 12ax7 valve it doesn't work with this layout. How did you do this? Best regards
DeleteGood Today, one time i build Valve caster with 12ax7, but its doesn't work. Which layout is verified? Best regards 🤘
ReplyDeleteHello. A 12AX7 is the wrong valve. You need a 12AU7 for it to work.
DeleteIs it possible to use 12ax7? I have one from one old project and just wanna use it. Best regards
DeleteNope - a 12AX7 will not work. Has to be a 12AU7, as it can run on the low voltage.
ReplyDeleteout of curiosity I was wondering if the heaters are getting enough voltage in this circuit to get the valve glowing? I'd rather not build one with a fake led lighting up the underside like I've seen on some valvecasters... I saw an article that states that the heaters have multiple ways to hook up? thanks for all the layouts :)
ReplyDeleteFrom memory it isn’t very bright.
DeletePreamp valves don’t usually glow like power valves. That comes down to their construction and lower heater power. It’s not just the voltage that matters, but the heater current as well, because that is what actually heats the valve.
If you run the pedal at 12V DC, the heater is getting almost exactly what a 12AU7 is designed for on its 12.6V heater connection, where it normally draws about 0.15A. At 9V it is underheated, so heater current will be lower and it will usually glow less, but it is not necessarily the end of the world.
thanks for the fast reply! that's more or less what I gathered from reading all these valvecaster articles. none-the-less build one I must. I'll try it at 12v :)
ReplyDelete