I can find no signs that it ahs ever been used and it includes an original plastic protective cover. It is a versatile unit that can easily be integrated into any audio setup.
DIATONE DS-G500 High End 2-Way Car Component Speaker System Tested JDM
【DIATONE DS-G500 Networkless】. This is a popular DIATONE 16cm separate 2-way speaker. Used in a multi-connection (active connection) via DSP. Passive network is not included. ・DS-G500 Mid-woofers (left and right).
5 Inch Full Range Speaker Radio Shack New Old Stock 20 Watt
new radio Shack 5 inch full range speaker. untested but brand new in box