Looks like I had beaten you to the punch when you posted this...roseblood11 wrote:Thanx !
Would be great if you could start a retracing thread for the MXR Sustain and post good photos of both sides of the pcb.
I will definitely crack it open again this weekend though to get the values.
Incidentally, the pedal definitely works as advertised... It added some obvious sustain with both my Strat and my Epi LP, but really didn't color the sound at all or add much in the way of noise, even when I turned it up a bit. I was pleasantly surprised.
Thanks! I'm actually an admin of a small music forum... so I'm used to being able to edit anything I damn well please.phatt wrote:No need to apoligize I'll download it twice to make up for the good work you did.
Occasionally, I start looking at a circuit and think, "No way do I want to screw with this." Those are usually the circuits that I end up learning the most from. Of course, in my case, it's usually because I tinker with it... break it badly... and then have to figure out how the hell to bring it back from the dead.phatt wrote:Bin playin around with the *EH Black finger* but it's a split supply,, Grrr.
Not to worry all good practice for my ever expanding electronic skills.
I've at least made headway with the Bfinger as it's been tweaked down to a very low noise level and I'm happy with it,,
But I will certainly take these schematics and see how they all stack up.
For me it's not about making the worlds greatest Comp circuit I simply want more sustain without the dreaded hiss that comes with most of them pedal types.
Having purchased a stock ED (Marshall Comp) and being able to improve it's usrless noise issue by just changing 2 things then I feel there is hope for a better pedal sustain unit.
So if the worlds longest sustain comes with 10 times noise then I'll give up but I have a hunch that there is a circuit out there waiting for me.
Grin,, Cheers Phil.
Comp/sustain circuits are the type of thing I don't really understand as well as I'd like... I guess that's because when you've got a good circuit that does what it should, you just don't think about it much. It's not as "glamorous" an effect, but I certainly notice it when it's gone in some situations.
It's very cool that you were able to soup up your Marshall to rein in the noise. I'll bet with a little further tinkering, before long you'll really have what you're after. That MXR might actually go a long way towards helping as well... which serves as motivation for me to try to get you guys some better info on the inner workings.
Cheers...
Steve