Anyone replace their front or rear speakers with subs? Options

[Xander_X]

I have the 6 speaker stereo system and I want a little more bass. Just to get a full sound out of the audio. I was thinking of replacing either the door speakers or rear speakers with 8" subs but I'm afraid that I'll loose too much mid and high. Has anyone done this, and how does it sound?

And adding a sub and amp in the rear hatch isn't an option for me. I really don't like them taking up space or having to remove it if I need more room.

[Xander_X]

Idk, I just don't like the look of the amp sticking out. I've become a really big OEM snob in my old age. If it wasn't offered as an option by the respective company or off brand (TRD) is SOME country, I typically don't want it. I will usually sacrifice performance, looks, SOUND, etc in order to keep everything kosher. Hell, I'd LOVE the 25th anniversary badges and mats, but because mines a 99, not a 96, it seems improper. I think it all roots back to about 10 years ago with the Type R craze with everyone putting Type R, Type S, GT-R, SE-R, etc stickers and badges on their cars regardless of what it's make or what they had done to it. Sh*t, you could go to Pep Boys, Advance Auto, AutoZone and get all kinds of lights, shift knobs, petals, stickers, bolt on muffler ... all stuff that gave you massive HP gains, and people ate it up ... hell I was one of them for a while. I have a civic that was practically SCRAPING the ground with an Invader body kit and 18" wheels, full exhaust, turbo, underglow, TV w/ PSone ... you name it ... if it was in the aftermarket catalog I had it or WANTED it lol. That was 10 years ago. I've gone from "tuner" to pretentious automotive hobbyist. It just built up to the point that I just want as little as possible to do with aftermarket. Now I realize that sometimes you kinda have to. I've heard what the stereos sound like with the JBL systems. My 01 Camry XLE had a lesser/similar version. That sounded great, and I'd bet the Celica version sounds better. That being said, the last year of our vehicles was 99 ... do I want to buy someones used factory speakers from that long ago maybe longer? No, going to HAVE to go aftermarket. But I'm sure I can find something in my shop comparable to the factory subs that a factory amp could handle. If I HAVE to go aftermarket all around, I guess I'll just have to hide the amp under the passenger seat.

Now, back to one of my previous questions, does anyone know where the FACTORY sub amp would be located?