I was under the impression that dipole/bipole was to disperse the sound more over a wider area as well as change the sound characteristics a little...try both and see which mode sounds better to your ears. Usually dipoles are used for surrounds and surround backs.
| Display: Samsung UN85HU8550 (85" 4K) TV w/ SEK-3500U
| Speakers: Revel F208s, C208, and M106s (11x Channels) | Subs: SVS PB-13 Ultra (x4)
| Amps: Parasound Halo A21, A51, and A23 (x2) | Preamp: Marantz AV8801
| Sources: HTPC, Dish Hopper, PS3, PS4, XB1, and Oppo BDP-93
| Power: PS Audio Power Plant Premier (x2)