About tuning…
- my module is working but i think not to it’s full potential.
- i watched sam’s video about tuning and read many good posts like this one right here in this thread and the other thread with 3340 tuning advice
- during the built i deviated only once form the BOM 2.0 and replaced the LM4040AIZ-4.1 with a DIZ-5.1. i read here that going above the 4.1 could be regulated down
- i used a 20K resistor for my AS-Chip (as hinted by sam)
- i got 4 volts on the reference point and 0 to 4 volts in increments of 1 on the pins of the rotary switch
- the tuning display is recognizing notes (sometimes)
- i have audible sound on all wave forms
- BUT i think i’m missing the upper part of the spectrum and the trk-pot is at its end (clock-wise)… great base lines but where is Whitney Houston?
- only 2 (adjacent) positions of the rotary switch can have “good” sound, the rest is above or below the sweet spot…
any hints?
(edit: bad link)