I’ve purchased a “Stereo 3.7W Class D Audio Amplifier - MAX98306” to drive a single 8 ohm speaker in an arduino project. I’ve tried shorting the gain selector but I’m not hearing a volume difference compared to nothing being shorted at all.
I’ve tried all of the gain options without luck. I am using it mono mode with only the R-channel attached.
I’ve got some pictures below in case I’ve done something obviously wrong with the wiring.
Everything looks to be connected correctly to me, though I personally would have used the included header pins and shorting block instead of soldering a wire in place for the gound setting. This would make it easy to instantly check the different gain settings volume difference.
Can you check the resistance from the hole marked G- to ground? This should measure a dead short if your jumper wire is soldered in without any bad solder joints.
