TL;DR EQ sucks, speakers are good, get a 3rd party App bass-booster.
The car seems to suffer from lack of bass. Some have put in subwoofers to compensate for the lack, with reasonable results at a high cost.
My observation is not the hardware but the software, in particular, the Pilot Panel's EQ settings.
I have been able to solve this problem by adding an EQ App from my phone and then it sounds great. (I'm using "Bass Booster" from g000sha256 from the Google Play Store that doesn't collect or distribute user-data (most of the EQ Apps do, however). My settings are 7db Bass, 2db Boost, NOT using the "Old Effects Engine".) This warms up the bass guitar nicely and pulls up "warm" tones. IT'S NOT THE SPEAKERS, IT'S THE SOFTWARE. Sounds great.
This proves to me the speakers are up to the challenge, but the software programmers for the audio system are seemingly overpaid and tone-deaf, and probably used to Apple Earbuds as being "okay" when, if you look at the frequency specifications, are very lousy. Apple hides this data from its users, but it's lowest possible frequency is 285 Hz. A good set of earphones might be 3 Hz for the low-end. I owned a set out of curiosity and they sound tinny, flat, clinical, and soul-less like listening to cheap, 1990's laptop speakers from across the room. Lucid's "Surreal Sound Pro" sounds the same, like if you EQ'ed a HiFi system by dropping all frequencies to -10 db except 2000 Hz, cranked to 10 db.
A bass guitar or cello is 40 Hz to 400Hz, which is what most people want to give that warm punch. Kenwood is a company that understands this.
An example is the software for this 3-band EQ Lucid system is it just pulls up one frequency they choose out of a theoretical 10 band EQ. This has been played-around a bit with the software releases, but they NEED to pull-up that band's frequency on either side as well, so that it would look like 100 Hz is amplified by 10 db, and then 90 Hz and 110 Hz are amplified by 8 db, and then 80 Hz and 120 Hz are amplified by 6 db, vs JUST 100 Hz at 10db and the rest at 0 db.
For some reason, the bands are very narrow in the software's EQ, and the "Bass" setting is around 40 Hz ONLY with a very narrow and harsh drop-off on either side of that. Each of the EQ settings is a very narrow vs. very wide adjustment for some reason. Oh, you want a MID boost? Sure, we'll give you ONLY 2000Hz when you adjust that.
A 10-band EQ (easy software) with the frequencies listed would be a great improvement.