What should I expect if I swap in coaxial speakers into the JBL front door?

[The Dude]

hey @The Dude i'm back again, with another amateur question. Hope you don't mind!
I was thinking about choosing the aftermarket component speakers to replace the front doors and A pillars, but I wasn't sure how to make sense of the advertised frequency response range.

First, I don't know the current JBL frequency response range. Not to mention the JBL amp is tuned to work with the factory speakers in a pre-determined way. This part I am going to just accept, as in, I'm going to take a chance at how the JBL amp works with these aftermarket component speakers, and I know that it will have bearings on how the low end of my music manifest.

now, having said so, I still want to know if I could compare the low end sensitivity of the current speaker and say the Audison APK 169 (or any brand).

What I ultimately want to know if whether the new speakers I'll buy can deliver lower frequencies (say the JBL can't do lower than 60Hz, then whether the new one can do 57Hz etc).

anyway, not sure if this pursuit is sensible and possible.

Good question. From my research, I’ve not measured it myself, the door in the Tacoma plays from around 50Hz to around 1000Hz. The dash speakers play from around 1000Hz to around 3000Hz and the tweeters in the pillars play up from there. Those are REALLY rough guesses based on some testing I read in and article long before I took possession of my truck. Take them with a pound of salt.

As for a speaker set you choose, higher sensitivity is very beneficial in this use case, as is the lowest freq. capabilities. Since the Tacoma uses the front doors to produce most of the bass, and the “subwoofer” behind the seat is mainly for ANC, you’ll want to make sure that number is low. Here’s where it gets frustrating. You need something with a big enough motor that you don’t lose output, and something sensitive enough that you don’t lose output. It’s a triangle that was told to me years ago,
“You can have it good, loud or cheap, pick two.” If I were to pick a speaker based on that, I’d go with one of the big brands that specializes in swapping just speakers in cars. So Alpine, Kicker, JBL, etc. The Audison you’re looking at is, IMO, a lightweight and you’d lose bass response. The motor just isn’t up to snuff to produce lower frequencies, even if it says it can.

Btw, this is the second or third time you’ve mentioned a 2-way component set, are you not replacing the dash 2.75” speaker with a set?

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