I will soon get a cat (Jaguar XE 25t r-sport) with the upscale sound system Meridian 380W. In FM radio operation the sound is ok, but I lack bass (as foundation, no Assi boom boom). Then today in the demonstration car nice chill-out-jazz run off the USB stick and the sound was perfect! Must take out bass and it was a super sound. What is it that the radio is so weak-basty and what can you do about it? The system itself can do it! What can I do to make it there too! Is radio sounding reasonable?