Hi.
The best performance will be obtained using component cables and analog audio cables.
In this case you will use video component cable that are the ones in Red-Green-Blue color, and audio cables, that are the red and white cables.
Connect the red and white to analog audio out on the GVC, connect them to analog audio in on TV.
Connect the three red green blue to video out on the correspondent sockets on JVC, same on TV.
Alternative ways to connect are SCART:
And analog AV cable connection, using the Red-White cables for sound and the Yellow cable for video:
The bottom picture is the JVC, the cable at the left is the yellow Video cable. The two cables in the right column connector are the audio, White and Red.
Regards.