"Is this some type of homemade jumper"?
Yes. You can either remove this jumper and bi-wire the speakers or buy any number of jumper plates/wires and single wire them.
Cardas has both:
http://www.cardas.com/content.php?area=oem&content_id=13&pagestring=Jumpers
Yes. You can either remove this jumper and bi-wire the speakers or buy any number of jumper plates/wires and single wire them.
Cardas has both:
http://www.cardas.com/content.php?area=oem&content_id=13&pagestring=Jumpers