I bought a pair of Klipsch speakers (eBay) to go with my 2 channel set up which consists of the following:

Pioneer SX-950 Receiver
Pioneer PL-71 Turntable
Klipsch RB-35 Speakers
When I hooked the speakers up, something just didn't sound right. I checked to make sure I hade the speakers wired correctly when I noticed that the jumper straps were missing (didn't notice at first) therefore, I am now forced to bi-wire them. I have two questions.

1. Can I bi-wire the Klipsch to my old pioneer or do I have to use my multi channel Denon.
2. If the previous owner single wired them without the jumper straps, did he ruin the speakers?