I own a 2013 RX 350 with Nav package and premium (Non Mark Levinson) audio package.
I am looking to upgrade the audio quality. First off, does anybody know where I can find the specs on the existing audio system? I am open to any suggestions. Would really like to improve the bass response, and improve the high frequency outputs. The system sounds decent, but it's just not on par with where I would like it to be. I would appreciate any help or tips.
Thanks.

 

Factory set up
front: 6x9, tweeter, mid bass
rear: 6.5 , tweeter
1 8 inches sub in the back
I have upgraded mine like a week ago, here is the link to it
https://www.clublexus.com/forums/rx-...-vs-stock.html

 

Adding to the prior post someone gave with the specs... It is made by Pioneer, I do know that, there is also an amp in the car (possibly JVC) that works in conjunction with it.

I agree with you that it is not up to par with what it could be compared to other stereos out there, but that being said it isn't terrible. It can be VERY tricky but not impossible to upgrade the radio headunit. There are extra adapters you'll need and some aftermarket set ups do not work and will disable the navigation & climate control. So you have to do alot of homework ahead of time before changing it out.