Insignia NS-HSB318 User Manual page 12

RCA connection (good)
1 Connect the right-angled connectors of the
your soundbar.
2 Connect the other end of the RCA audio cable into the Audio Output
ports on your audio source device.
3 Go to "Third step - Connecting the AC adapter" on page 14.
12
Audio source (TV,
Blu-ray, or cable box)
RCA cable (provided)
www.insigniaproducts.com
included RCA audio cable to
Back of the soundbar
NS-HSB318