Nuovi ricambi terminale altoparlante Pioneer SA-7500 SA-8500 SA-508 SA-608 SA-708

These will work for All you have to do is mount the jacks in the plates, install these with small bolts (not included) in your receiver, and solder them up. These are not 3D-printed, they are much higher quality and have an elegant fit and finish.

eBay