You still need at least 2.0 cables (4.0 wires) to run power to the speakers, unless you feel like using battery powered, then you only need 4.0 wires to run power to recharge both the speakers, or 2.0 wires for power and 2.0 wires from driver to slave speaker.
Wireless makes little sense except for a mobile device, then portable, then 1.0 speaker or 2.0 speakers-in-1.0-housing, not 2.1, then you still need 2.0+ wires to recharge or power it.
Get an old PCI sound card with the amp built in and drive a single speaker, then you only need 2.0 wires (integrated into 1.0 cable).
