Can I use Pioneer SP-T22A-LR speakers with my TX-NR656 receiver?

Yes, the SP-T22A-LR speakers are compatible with the Onkyo TX-NR656 receiver.  Although the TX-NR656 is capable of putting out more power than the SP-T22A-LR’s 80 watt maximum input rating, assuming that you are using the speakers as height channels for Dolby Atmos or DTS:X tracks it is highly unlikely they would see the full rated power of the receiver.  We have these speakers connected to a TX-NR757 receiver in one of our demo rooms and they sound great.