General build question really. Using one of lvlark's plans which i'l post below, i'm a little unsure of the wiring on the clipping switch, can somebody explain to me how i should be wiring the diodes and LED's to the switch?
The layout appears to show the diodes wired to a switch with 6 posts, whereas mine only has three..?
hey man. you're using the wrong switch. if yours has 3 posts and it's On-Off-On, you've got an SPDT switch, where as you want a DPDT On-Off-On switch. once you have the right switch wire the clipping diodes as shown in the layout. so on one side you're going to put on one side 2 1N4148 diodes asymetrically to lugs 1 & 4, and on the other side you're going to put 2 LEDs asymetrically on lugs 3 & 6, while lugs 2 & 5 go to the board as shown. does that make sense?
and i not sure if you were asking this too, but the LEDs on the switch are not indicator diodes, they're used as clipping diodes. you should get more headroom, less compression, and as some would say more "tube like" distortion.
This is only my second build, the whole building and wiring part/physical aspect of pedal building comes pretty natural, but electronics is very new to me, i have a basic understanding of what i should be doing but things like this tend to trip me up because i just don't have the relavent knowledge, so, thanks again guys, any help is greatly appreciated
I'm still stuck with this one. I got rid of the switch and just wired the LED's into the circuit permanently. It worked, a little better this time, controls appear to do what they're supposed to, etc, but it still sounds like shit. Drive is really weak, and its quite muted and flat sounding. Has anybody else built one of these?
To be perfectly honest, i've never used a tubescreamer to know what it should really sound like, but when you're playing an EMG equipped thru-body into 50watts of marshall combo, if it sounds weak usually something is wrong....
I just expected more i guess. Looks like this one is going in the junk box for salvage at a later date.....
Yeah, that's basically what i did, but with the LED's instead. I'm gonna play around with it a little, try different components and see what happens. I'm not going to bother boxing this, i think i'm just gonna keep it on my test board and use it for experimentation, eventually i might find something with just the right amount of grit