(12-15-2024, 03:51 PM)Onionhead Wrote: Starting second Protodac build and want it to be an upgrade from first. I want to be very clear in no way am I disappointed by the standard component, just like to use other compents to hear for myself. From reading this thread seems best place to upgrade is to start with I/V resistors.I would like to try the Caddock TF020 but concerned with width of pins. I am sure this has been documented just can't find it so I'll ask what is the pin spacing for R4/5?
According to the datasheet, lead spacing is 0.150 inches or 3.81mm.
My brother has two shunt-type passive volume controls, a "premium" one using the TF020 and the other using the MP series, and the discontinued TF020 sounds much better.
As an aside, a shunt volume control is not a good idea, because it creates a variable frequency high pass filter (due to the variable resistance of the shunt design) with the output coupling cap of the prior stage. A standard potentiometer has a fixed resistance presenting to the prior stage, a variable resistance to the following stage.
Hardware: RPi Zero W | Allo Kali | ProtoDAC TDA1387 X8 | PGA2311 | Icepower 500ASP | Harbeth SHL5
Software: Moode 8.3.3
Source: Win 10 NAS
Software: Moode 8.3.3
Source: Win 10 NAS