“Surprisingly good quality from such an inexpensive speaker especially when mounted in a well designed enclosure. I mounted them in Back Horn enclosures as per Chris Hill's design https://www.printables.com/model/117883-customisable-back-horn-speaker-enclosure and they sound great. A Raspberry Pi Zero running PiCorePlayer software and the 3Watt Pirate audio DAC card completes the project.”