I can't seem to find a 2k cermet pot used in the leach amp. I suppose this is only for quality. Will a normal cheap pot do the job as well?
Also I can't find stacked metal film capacitors. I will be using polyester capacitors instead. Comments will be appreaciated
Also I can't find stacked metal film capacitors. I will be using polyester capacitors instead. Comments will be appreaciated
Sez you...........
"A condutive plastic pot would be much better that a cermet one." - JW
Unless you care what it sounds like........ the cermets sound noticably better. I replaced my ALPS 100K Black Beauty with linear cermets with Caddock resistors from wiper to ground for a law faking taper. There's no comparison. The Alps sounds colored, soft, rolled off, and doesn't have the detail ....... and they cost a bunch. It is complementary to slightly hard and bright electronics. The TKDs are the best conductive plastic ones I have heard but have a different "log" taper and aren't cheap either.
"A condutive plastic pot would be much better that a cermet one." - JW
Unless you care what it sounds like........ the cermets sound noticably better. I replaced my ALPS 100K Black Beauty with linear cermets with Caddock resistors from wiper to ground for a law faking taper. There's no comparison. The Alps sounds colored, soft, rolled off, and doesn't have the detail ....... and they cost a bunch. It is complementary to slightly hard and bright electronics. The TKDs are the best conductive plastic ones I have heard but have a different "log" taper and aren't cheap either.
Fred,
If cermet pot might be ok as a trimpot in a bias circuit. You should run a HF square wave through one and tell what you don't see.
How the head.🙂
If cermet pot might be ok as a trimpot in a bias circuit. You should run a HF square wave through one and tell what you don't see.
How the head.🙂
Till,
You win, that is the strangest looking pot I have ever seen and it's power with a car battery. Does it run in class A.
You win, that is the strangest looking pot I have ever seen and it's power with a car battery. Does it run in class A.
Re: Stacked caps
Both Panasoninc (type V) and Epcos make stacked polyester caps, B3252X.
Epcos also makes stacked polypropolene caps. B32620/1
All the above radial caps are available from Digikey.com in the States. Outside of N.A. I'm unsure, but assume the Epcos are readily available in Europe.
Wagener said:
Both Panasoninc (type V) and Epcos make stacked polyester caps, B3252X.
Epcos also makes stacked polypropolene caps. B32620/1
All the above radial caps are available from Digikey.com in the States. Outside of N.A. I'm unsure, but assume the Epcos are readily available in Europe.
If the pot is being used to adjust the bias, Im not sure the signal passed through it anyway. I this is the case, the "sound" is notparticularly inportant but the stability (wrto age, temperature, etc). Also if it's small trim pot, some have a limited number of end-to-end rotations (or so the datasheets say) so there is only so much fiddling with the bias you can do before possible mechanical failure. I don't know if cermet, plasic or whatever suits this use best but perhaps another poster has some info on that.
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