Hey guys,
I'm building a 2x PBTL mono amplifiers for 8ohms speakers out of the TPA3221 and I've got a couple of questions for you fine folks out there:
- Given that I intend not to use the internal LDO of the TPA3221 and it being 240V mains powered, what power supply solution do you recommend?
- What operating voltage is optimal given that I want near maximum output power?
- I'd like to use the LM1972 for digital volume control, do I need a buffer/pre-amplifiers between the attenuators and the power amplifiers?
Best regards,
Håkon H.