10-24-2023, 06:44 PM
(10-23-2023, 05:50 PM)hifinet Wrote:(10-23-2023, 03:34 PM)marco.mosca Wrote:(08-10-2023, 02:37 PM)hifinet Wrote: I received this question regarding polarity inversion:
"I have a question regarding polarity inversion. The document says that we have to invert the polarity in Moode. Does this mean I can't use Raspberry Pi software that doesn't allow this inversion?"
You can use software without a polarity inversion option. Simply reversing the +/- speaker leads will reverse polarity. Most components such as preamps and power amps do not reverse polarity, but some do. Check your manuals.
Would it be the same if +/- is reversed at the output of the PCB?
Thanks.
Marco
It's a single ended output with signal (+) and ground (-). If you reverse at the output of the PCB, you would then be grounding the signal (connecting + to ground), and creating signal from ground ( - to signal), which has no signal.
Sorry for the additional question. Thus, inverting the polarity of the signal cable connecting the ProtoDAC to the preamp won't work. Correct?
M
