Hi there,
Iam about to build my second SSL 9k5 Preamp, because Iam very convinced in this thing![Wink ;) ;)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
But this time Iam thinking of a modded input gain.
more precisely of having a 12-way stepped gain selector, realized with a rotary switch with corresponding resistor values.
Background is that I can't find an alternative for this "nasty" 2k2 pot rev log, except from AML.
They now have a minimum order value and with that I would have to pay almost 75 pounds for the pot and other products to reach the minimum order value, with shipping and customs clearance, and that is ridiculous - but unfortunately there is simply no other supplier for these pots.
Maybe it is even possible to change some other resistor values on the pcb, so that you can have another pot value for the gain - but I dont know..
The considered stepped gain option seems to be a nice alternative for this preamp.
but I'm faced with a big question:
How do I find out the values of the resistors for the 12 positions from 0 Ohms on position 0 to 2,2k at twelfth - especially because the volume should increase audibly consistent with every step.
Logically, I can't simply calculate 2200 ohms divided by 12..
Are there any Ideas for an approach on this? Is this even possible to realize?
Thanks a lot for your help, thoughts and ideas on this!
kind regards
jonas
Iam about to build my second SSL 9k5 Preamp, because Iam very convinced in this thing
But this time Iam thinking of a modded input gain.
more precisely of having a 12-way stepped gain selector, realized with a rotary switch with corresponding resistor values.
Background is that I can't find an alternative for this "nasty" 2k2 pot rev log, except from AML.
They now have a minimum order value and with that I would have to pay almost 75 pounds for the pot and other products to reach the minimum order value, with shipping and customs clearance, and that is ridiculous - but unfortunately there is simply no other supplier for these pots.
Maybe it is even possible to change some other resistor values on the pcb, so that you can have another pot value for the gain - but I dont know..
The considered stepped gain option seems to be a nice alternative for this preamp.
but I'm faced with a big question:
How do I find out the values of the resistors for the 12 positions from 0 Ohms on position 0 to 2,2k at twelfth - especially because the volume should increase audibly consistent with every step.
Logically, I can't simply calculate 2200 ohms divided by 12..
Are there any Ideas for an approach on this? Is this even possible to realize?
Thanks a lot for your help, thoughts and ideas on this!
kind regards
jonas
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