So other than going to SSTRAN directly, where would be the best source for the 20 ohm and 50 ohm variable resistors? The kind with the knobs.
I goofed when soldering mine in; put them in the wrong spots, reversed them. I'm concerned that as I remove them I'll end up destroying the originals.
If you have not yet removed the pots, you need to use a solder sucker to release them first !
Without checking the dimensions i guess this should be similar
Try removing the originals first.
Paul.
The Ebay parts don't specify their ohm rating.
They do, 20k means 20,000 ohm, the k stands for kilo (1000 ohm).
The sstran amt3000 uses 20k and 50k potentiometers.
Paul.
Sorry to hear of your misstep. You will have to remove the pots in any case and the danger is not necessarily damage to the pots but to the plated through holes in the circuit board. Removing them is tricky without a solder sucker or solder wick but it can be done. Start by adding more solder to the connections and if you can put enough on there to bridge all three terminals, heat to melting and rock the pot back and forth until it comes out. Remove the excess solder by tapping the board on a table. You can damage the board this way but without a proper tool this is your best bet.
If you do order pots, check the values since it is doubtful that they are 20 and 50 ohms as you stated.
Neil
The extra complication of the original amt3000 potentiometers is that they also have built on supporting brackets, that are also soldered to the pcb, to strengthen them against twisting/usage.
A solder sucker would be the easiest way in my opinion.
Paul.
Audio taper NOT Linear.
The link was to show the style of pot, that is the only one i could quickly find.
Both linear/log/audio taper and reverse audio taper would work, as the decals are not calibrated, the relative sweep positions would differ.
Just opened my amt3000, the pots are branded alpha, and the gain pot is B100K, modulation pot is B50K, and compression pot is B100K.
In my amt3000 the 'B' suffix is for linear pots, this is what my kit came with.
Paul.
Paul.