Russ: I recall reading somewhere a while back that you were considering changing the gain structure of the two OPA stages on the IVY-III. You suggested that lower distortion might result from making both OPAs near equal in gain. Have you ever followed up on that idea? I am considering trying 390R and 360R in the two stages for close to 2 V output with B-IIIse, should I give it a go?
Anyone else experiment with this?
Anyone else experiment with this?
update
Went ahead and used 390R and 360R using PRP resistors matched to better than 0.1%. No way to know for sure here, but this seems to be the best sounding IVY-III I have built yet. A bit more insight into low level details, but not hard, bright, or annoying sound.
Also used PPS SMD caps (8.2 nF) for the analog filtering.
Went ahead and used 390R and 360R using PRP resistors matched to better than 0.1%. No way to know for sure here, but this seems to be the best sounding IVY-III I have built yet. A bit more insight into low level details, but not hard, bright, or annoying sound.
Also used PPS SMD caps (8.2 nF) for the analog filtering.
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.