Review on 🔊 Gikfun 2-inch 4-Ohm 3-Watt Full Range Audio Speaker Stereo Woofer Loudspeaker for Arduino (Pack of 2) by Sarah Dionne

Install these speakers with Arduino and amplifier board to create a tone generator for my daughter's science project. Tested setting for frequencies from 20 Hz to 20 kHz. I was able to get good clear tones from 40Hz to 10kHz. At higher frequencies of 10-20kHz I could hear the speaker playing the correct tone, but the amplifier board (PAM8403) started making noises that pretty much drowned out the real tone. I wasn't expecting such a small speaker to perform well at low frequencies and the results in the 20-40Hz range were to be expected. Note that volume was pretty good and the speakers can be a lot louder than they need to be.