I Got a Class D amp with that has filterless outputs but really needs one. I have 130kHz on the speakers and since its also bluetooth i sometimes get some audible HF noise, maybe around 16K?? What parts would i need to make a filter around 12kHz? I figure since im going to be placing a big mouser order for another project why not spend a couple bucks and fix the noise with this bluetooth speaker. Speakers are 4 Ohm. the amplifier IC is a MIX2052 but googling that gives me nothing. after about 5 mins with a scope it appears to be a bridge amp. its in an SO-8 package and there's 2 of them. PINS 1 Unknown, has 3.1V on it 2 Unknown, has 1.6V on it 3 Input 4 Input 5 130kHz 6 VCC (4.2V) 7 GND 8 130kHz Any ideas with this one?