Addicted to Fun and Learning
- Aug 24, 2018
- Succasunna, NJ
It is certainly doable, there is potential for issues depending on how the equipment is grounded internally.is there could be any issues (ground loop/hiss/noise) if I connect unbalanced output of a DAC (RCA) with balanced input of Active speakers (XLR) or I shouldn't worry about it ?
There is not a way for the Rpi to control the SRC4193, the only way to do that is through the POT. The audio signal does not go through the pot, the pot only sets the attenuation level of the SCR4193.please note that i am a audio newbie; and evaluating if the pecanpi is something i can use in my setup.
I may/want to add a display+touchscreen to the RPi and set volume through the display (i dont like pots, its soooo 1980 ).
In my naivety I am thinking that to achieve best audio quality you want to attenuate the signal in or after the SRC4193, so to keep the best signal to noise ratio. you do want to avoid setting volume in the RPi.
-how do you program from the raspberry the SRC4193 digital volume attenuation?
-how is your potentiometer doing the volume attenuation?
could you (anybody) shed some light on this or best practices how volume control oughtta be and also regarding how it works with the pecanpi+RPi?
The spi bus is not connected to the Rpi. This is because as far as I can tell, there is no Linux driver available for the Rpi.the RPi could software control the the SRC4193 over the spi bus (but i assume its not connected by your answer).
i was just wondering if the digital domain in the RPi is the same digital domain as in the SRC4193 where the attenuation takes place. if the digital domains are different, the signal to noise ratio would be influenced right?
i'll take a look in the datasheet where/how the 4193 attenuation is done
All connections are on the back with volume knob on the front.the current version of the DAC and (metal) case have the Rpi and the DAC ports on the same side /w volume knob in the front?
Picture below.for RCA connectors, the option I am seeing is for - steel case with volume pot, add /w RCA Connectors.... what does this look like on the case and internally from the DAC?
There is a third party that sells cases compatible with RPI 4, here:any chance of a RPi4 case option? (this is more out of curiosity than a requirement). Any difference in sound with the Rpi4?
Yes green terminal blocks....so the RCA connectors connect internally via the green terminal blocks on the DAC yes?
Currently it is for nothing. It is for a future feature. Will be announced in about 3 months.That plug on the top right of the pic is for any option? coax\spdif?
I ship world wide.Hi,
I’m in Europe and I’m interested in the Pecanpi. Does is it make sense to wait if a new feature is coming soon?
Do you ship to Europe ?