I am laying out a THAT-1570 preamp for the 500/51X series.
I want to make a really inexpensive very quiet wire plus gain type amp. I can get really low noise out of the chip and a simple card can be put together at really low cost per channel.
But to get the best noise numbers out of those chips I have to either use the digital control or a reverse log dual gang pot or a dual gang rotary switch.
So my question is, is grayhill the only option? Are there any other less expensive rotary switches with at least 10 positions?
(I don't want to use the digital control, and the reverse log pots are hard to find, and I like switches. But the way things are going the switch is the most expensive part in an otherwise very low cost module).
I want to make a really inexpensive very quiet wire plus gain type amp. I can get really low noise out of the chip and a simple card can be put together at really low cost per channel.
But to get the best noise numbers out of those chips I have to either use the digital control or a reverse log dual gang pot or a dual gang rotary switch.
So my question is, is grayhill the only option? Are there any other less expensive rotary switches with at least 10 positions?
(I don't want to use the digital control, and the reverse log pots are hard to find, and I like switches. But the way things are going the switch is the most expensive part in an otherwise very low cost module).