PSB Synchrony S (Black Ash) Dipole/bipole surround speakers at Crutchfield
Dipole vs Bipole vs Monopole: Which Surround Speaker is Best? | Audioholics
Amazon.com: Fluance Elite High Definition 2-Way Bipolar Surround Speakers for Wide Dispersion Surround Sound in Home Theater Systems - Black Ash/Pair (SXBP2) : Electronics
Reference High Performance Two-Way Bipolar Surround Speakers | Fluance
Focal Aria SR900 2-Way Bipolar Surround Speakers - Each | World Wide Stereo
Amazon.com: Fluance Signature HiFi 2-Way Bipolar Surround Speakers for Wide Dispersion Surround Sound in Home Theater Systems - Black Ash/Pair (HFBP) : Electronics