Sony STR-DN1080 Manual page 34

Connecting front speakers with bi-amplifier connection
Connect the jacks on the Lo (or Hi) side of the front speakers to the SPEAKERS FRONT A
terminals, and connect the jacks on the Hi (or Lo) side of the front speakers to the SPEAKERS
SURROUND BACK/HEIGHT terminals.
Make sure that metal fittings of Hi/Lo attached to the speakers have been removed from the
speakers to avoid receiver malfunction.
Speaker cable (not supplied)
Connecting speakers other than front speakers
Monaural audio cable (not supplied)
Speaker cable (not supplied)
After you have made the bi-amplifier connection, set [Surround Back Speaker Assign] to [BI-
AMP] in the [Speaker Settings] menu.
Note
After you have installed and connected your speakers, be sure to select the speaker pattern you
want using [Speaker Pattern] in the [Speaker Settings] menu.
You can only set [Surround Back Speaker Assign] if the speaker pattern is set to a setting that does
not have surround back and height/overhead speakers.
[25] Preparation 2. Connecting speakers
Connecting 5.1-channel speaker system with front B
speaker connection