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I decided to post in this thread to update it since there’s been a lot of questions/concern about volume levels and frequency response, bass, etc in the car. I tested my car and for proper listening level it should be calibrated so that when you play back pink noise, with the volume slider in the position shown in the picture below, it should be at 79dB, which is the standard small professional mIxing rooms are calibrated to. Large rooms for film mixing are calibrated to 86dB but we’ll use the small room standard since the car is small. You can test your system with a simple tool, just download this SPL meter to your phone, it’s accurate enough.
In the app settings set frequency weighting to “C” weight. Then open the app, go into Tidal in the car, and play this pink noise track.
Adjust your volume slider until the dB meter app hovers around 79dB in the center of the car (holding it at head level at the arm rest is fine). My volume slider is set to this level to equal 79dB in the picture below, which is actually a pretty loud music listening level. If you want to test frequency response play this track once you’ve got the volume slider set to 79dB.
https://tidal.com/track/239208358
You’ll notice it’s pretty inaudible at 20hz which is typical for most reasonable systems with subwoofers, but it’s very audible at 40hz which is what most people perceive as “bass” anyway. If you hear nothing at 40hz then something is wrong with your system and you should do a reboot and if that doesn’t work then call Lucid.
I personally am very impressed as where the volume knob is calibrated to be 79dB is very close to how a fader in a mixing studio would work, where zero on the fader is 79dB, and you can go up to +12dB above that which is fucking ear splitting. They definitely had real pros calibrate this system, I just think because almost all car audio isn’t calibrated this way, it seems “wrong”.

Decibel Meter Sound Detector
Track environmental noise around you with this easy-to-use decibel meter app. This app will transform your device into a professional grade sound detector with detailed visual analysis. Decibel Meter app uses the built-in microphone to determine the level of sound it detects and displays it in...
apps.apple.com
In the app settings set frequency weighting to “C” weight. Then open the app, go into Tidal in the car, and play this pink noise track.
Adjust your volume slider until the dB meter app hovers around 79dB in the center of the car (holding it at head level at the arm rest is fine). My volume slider is set to this level to equal 79dB in the picture below, which is actually a pretty loud music listening level. If you want to test frequency response play this track once you’ve got the volume slider set to 79dB.
https://tidal.com/track/239208358
You’ll notice it’s pretty inaudible at 20hz which is typical for most reasonable systems with subwoofers, but it’s very audible at 40hz which is what most people perceive as “bass” anyway. If you hear nothing at 40hz then something is wrong with your system and you should do a reboot and if that doesn’t work then call Lucid.
I personally am very impressed as where the volume knob is calibrated to be 79dB is very close to how a fader in a mixing studio would work, where zero on the fader is 79dB, and you can go up to +12dB above that which is fucking ear splitting. They definitely had real pros calibrate this system, I just think because almost all car audio isn’t calibrated this way, it seems “wrong”.