in customer application, the channle 1 and channel 4 of TPA6401 connect tweeter, the channel 2 and channel 3 is connect woofer .
we have below questions:
1. customer use DC load disgnostics, pull down stanby pin and 0x09=01, write 0x04=0xFF. Found two tweeter have "di di" noise.How to remove "didi "noise, and why is this happening?
2. I check the A/N, for tweeter,usually use AC load disgnostics. Can we disable DC disgnostics of channel 1/4 and enable AC disgnostics to remove the noise?
3. If yes, what the result of AC disgnostics? Does the AC disgnostics will report short load/ open or short power? In the datasheet , it is measure the Impedance Phase. how does the AC disgnostics work? how to detect the connection status?