FWIW
I was considering whether a speaker up grade (back seat woofers and / or a luggage compartment sub-woofer) was worth it.
I decided to take some measurements regarding the bass/mid bass frequency response of the entry level stock speakers (no sub-woofer).
Using an A weighted sound pressure meter and warbled test tones I obtained the following results:
Hz, db
200, -2
160, +2
125, +2
100, +2
80, +2
63, +2
50, 0
40, -4
32, -12
I was pleasantly surprised (shocked) as to how flat and extended the low frequency response was (I expected a peak around 120 Hz and a sharp roll-off below ~80Hz). Flat to 50Hz and real usable sound down to 40Hz.
Based on my musical tastes (classical, jazz, and light rock), I have decided the stock speakers are pretty darn good and I wouldn't get that much benefit trying to get bass extension below 40Hz.
I was considering whether a speaker up grade (back seat woofers and / or a luggage compartment sub-woofer) was worth it.
I decided to take some measurements regarding the bass/mid bass frequency response of the entry level stock speakers (no sub-woofer).
Using an A weighted sound pressure meter and warbled test tones I obtained the following results:
Hz, db
200, -2
160, +2
125, +2
100, +2
80, +2
63, +2
50, 0
40, -4
32, -12
I was pleasantly surprised (shocked) as to how flat and extended the low frequency response was (I expected a peak around 120 Hz and a sharp roll-off below ~80Hz). Flat to 50Hz and real usable sound down to 40Hz.