Can I connect LG sound bar 4.1 NB4543 with AVControl Stero receiver Technics

[Scottish in Florida]

Trying to connect LG TV and receiver using the sound bar to eliminate having huge speakers

 

[americanaudiophile]

Soundbars are designed to connect directly to your TV so don't require a receiver. You can use the optical input on the soundbar for the TV.
If you want to play sources that are connected to the receiver on the soundbar then connect the tape record out of the receiver to the portable audio input. Use the volume control on the soundbar to adjust volume.