This is pretty much a repost from the other thread with more explanation and then song recommendations. The key to remember when listening is the reference is what a really good set of headphones would sound like, not what a Sony MegaBass boombox sound like. Meaning soundstage, channel separation, clarity and full bandwidth are all in consideration. If you butt shakes isn’t a factor.
The big discussion item and point of difference is owners expectations of what good sound is. In another thread I posted REW measurements of the Lexicon system with my calibrated mic. The system measures very good and quite flat, which is how a sound system built to accurately reproduce an audio signal should sound. The system should not color or alter the sound in any way from the way the audio engineers mastered the track. However many people equate thumping bass to better sound when that is not how the sound engineers envisioned and created the track.
The weakest point in almost every OEM audio system are the speaker drivers, this holds true in the auto industry. Upgrading only the drivers can make a HUGE improvement without the need for swapping out the head unit, attempting to bypass the infotainment system, or adding different amps with capacitors for high power draws when adding a large subwoofer. Speakers made from higher quality materials and properly designed crossovers with quality components will sound better than cheap drivers with a simple crossover (or worse only a filter) made from cheap parts. The best woofers and midrange drivers have particularly stiff cones, often made from aluminum, titanium, carbon fiber, wood-fiber pulp, or a sandwich of multiple materials. The stiffer the cone, the less likely it is to produce distortion—and the clearer the sound is. Tweeters can be made from metal, fabric, or plastic. The lighter and stiff the material, normally the better the sound and less energy needed to control the sound. Sometimes spending as little as $200/pair on auto speakers can make a very drastic improvement. Anyone looking to swap out the drivers and crossovers needs to have some knowledge of what they are doing to ensure the amps are designed for the ohm load of the new speakers. The load can also impact the amount of power the amps are supplying.
I would strongly attempt to feed the Lexicon system in the GV70 a hi-res audio signal and give the system an honest listen. Don't use a highly compressed SiriusXM signal, a listener would be better off using an AM radio station. If using a streaming service Make sure the service is using hi-res files and your network connection is stable. I think most listeners will agree the Lexicon system is quite good and
tuned the way it should be. That's not saying some people what an EQ house curve that looks like a "U" with tons added bass and treble that will fatigue most people ears after a while, but for accurate audio reproduction the Lexicon system is very good.
I should also note that I have not looked into the Lexicon system enough to know if the component speakers use an active crossover from the head unit or amp. My comments above are based on traditional systems with a music source, DAC, power supply and passive speakers with crossovers (or full range drivers).
Songs to give a listen too. Again, make sure these songs are of high quality and it’s best when using a wired connection from your player to the Genesis infotainment system.
Dire Straits - Money for Nothing
Joe Bonanassa - Woke Up Dreaming
John Beck O-Zone Percussion - Jazz Variants (listen for several minutes and you’ll hear clean bass drums that hit hard)
Nils Lofgren - Keith Don’t Go
Shelby Lynne - Just a Little Lovin
Amy Winehouse - Help Yourself
Air - Alone in Kyoto
BB King and John Mayer - Hummingbird
Enya - Orinoco Flow
The Fairfield Four -These Bones
Kelly Sweet - Dream On
Erich Kunzel Cincinnati Pops - Batman Theme
Lorde - Royals
Keb Mo - every Morning
Chris Botti - Hallelujah
I gave a long list hoping you can find a few of the titles. If you can’t find them let me know and I can put samples of these songs in a file for download. I have a list of 84 songs I use when auditioning high end home audio systems.