Had it booked into the dealer today as the sub woofer barely makes any difference to the amount of bass.
Even the sales manager agreed it was very quiet.
Just collected it and no fault found!, they reckon that’s how it is in the new 85 series.
They compared it to a 69 plate Superb which was louder and a 71 plate which was about the same, they reckon it’s working fine.
I’ve had previous cars with sub woofers and every one, when turned up, would punch you in the guts, vibrate the rear view mirror etc.
This one sounds about the same as my previous Ateca with the standard sound system.
If you take up the boot floor you can just hear it working but it’s def. not loud.
Others on the UK/Ireland Enyaq forum have said their subs def. rattle the boot and mirror if turned up above +3, mine makes virtually no difference to the sound from -9 to +9.
Please excuse spelling/typos. Apart from being a clot it turns out I had one on my cerebellum that's now causing various problems!