...in comparison to a build done with regular potentiometers?
It's just that I wanted to do a Cosmo with trimpots and use those shafts for turning the trimpots through the enclosure. Sounds much messier than I intend to do it believe me heh. Of course one would ask, why just not do regular pots but the thing is here in my country you can't get nice knobs and what appeals to me is the idea of the "set and forget" principle, ability to stomp over whole pedal without worrying [which is something I do a lot cause my board is crowded and I am very clumsy on rehearsals] and of course, the additional reason of just...doing something different. I haven't boxed a build in months so I am eager to make it as interesting as I can...at least to me that is.
you want to achieve something similar to this?
(http://www.premierguitar.com/ext/resources/archives/4320e9e3-0f0e-4401-ae39-8fe3052642ff.JPG?1371672694)
Yes. That is a bit fancier than what I can do but mine won't be to shabby either I think. Who knows what trimpots Blackstone is using here though, may be something ultra quality. The only ones that I can get on top of which I could install a shaft are Piher Spain. Anybody has a bad story surrounding them?
I use em all the time in builds for biasing and stuff, if I can use em there and everything works fine why not instead of pots...
Although biasing and signal path is not the same thing obviously. I don't know, just been thinking about this lately, somebody give me some advice please
The Bixonic Expandora two used trimpots with extensions through the enclosure.
Don't know about sound but trim pots are not really made to be turned zillion times. They will start to fail much sooner than regular pots.
You speak of "set and forget" but remember: it has a knob - you will fiddle.
Hah, now I will do a sound comparison of trimpots vs regular pots :))
You are right, it has a knob and I will fiddle. And the Cosmo looks like a pedal that can produce lots of usable sounds of which almost all are extremely pleasant
The Blackstone is regular split-shaft pots, sawed down. The PCB is recessed and mounted inside the enclosure.
Trimpots have terrible tolerance, bad noise performance, and also don't tend to allow fine adjustment easily. Those are all pretty good reasons to avoid using them when possible.
Putting holes in your enclosure that won't be filled with something means more RF. Something to think about.
But I can certainly understand the desire to reduce the number of knobs used.
yeah, those are some solid points all right. just wanted to tickle your brains some gentlemen, looks like I'll be abandoning this idea after all. thanks!
oh my god I just realized that this is in the JMK subforum! I clicked on the first tech help forum I saw in the "show new posts" screen and haven't realized it wasn't the "main" one...sorry Jacob, if mods could move the topic I'd be grateful, thanks
I think the main reason I can think of is that Trim pots are not made for high turn numbers. I think some of them are really only rated for 1-200 turns, which is really small compared to the 10's of thousands some standard pots are rated for.
Jacob
Trimpots are hard to dial in because of the short carbon slide they have. They are also not as durable as normal pots.
The Skreddy Screwdriver did just this.