I gave up trying to get big sounds in the Aero's. The daily AMG E63 has been tweaked with different speakers and an amp upgrade. Modern cars can be difficult to tweak as they are all designed as one.
The HiFi stuff is down the end. I worked as a saturday boy in a HiFi shop when I was young and became a bit obsessed. Built it over the following years.
LP12 combo
Townshend Rock T/T
Micromega dual CD unit(s)
Exposure active amps/psu 3way, older but well matched to the....
Linn Isobarik active speakers which have been rebuilt.
In a normal home it could be described as having substantial bass.
I have to say the Funktion One stuff sounds remarkably good for a nightclub system. Not absolute HiFi but in the Chapel it sounds wonderful. Fed from a Mac using Apple Music at top bit rate.
I moved to the Old Chapel in Dartmouth a while back. 16C stone Chapel, one huge volume. There is an AirBnB about three feet separated from me. When they get too loud I just turn the Funktion One up to half and knock the pictures off their walls. I have had to blutack all my stuff down. If a things worth doing......its worth overdoing.