I am really disappointed of the bad sound quality of the standard sound system. Just got my new Octavia RS iV yesterday. Unfortunately I had to buy the car from stock. Otherwise
Skoda Octavia 2017 Subwoofer install. Boot side panel sub box. Rockford Fosgate P1 10 Inch sub. JBL - YouTube
Skoda Octavia Mk1 1U 96-04 1.9 NS left front door speaker 1U0035411 A | eBay