where can i get rti12 bi-amp bridge?

[umjs78]

i have rti12 bi-amped and now i gota sell those but after i disconnected spks..i dont know where i can get those bridge(spk side)
is there any place that i can buy em? or should i call polk?

[tonyb]

What is a bi-amp bridge ??

If you refer to the brass plates that came with the speakers that connected the top and bottom posts, you don't need them per say, you can just use regular speaker wire to connect the posts.