Welcome to the forum!
I hate to be the bearer of bad news, but adding a radio, speakers and an amp is just the beginning to making a system sound great.
I would take a stab and say that your oem factory door speakers were playing midbass like a champ, until you swapped them for some low brow 4-way pioneers? (Around these parts a 4 way is tweeter, mid, midbass, sub bass)
In order for a lot of speakers to perform the best inside a door, it is paramount that the door is deadened and sealed up. This will make your door more like an enclosure, therefore giving you more midbass that was simply leaking out from the door before.
I hate to be the bearer of bad news, but adding a radio, speakers and an amp is just the beginning to making a system sound great.
I would take a stab and say that your oem factory door speakers were playing midbass like a champ, until you swapped them for some low brow 4-way pioneers? (Around these parts a 4 way is tweeter, mid, midbass, sub bass)
In order for a lot of speakers to perform the best inside a door, it is paramount that the door is deadened and sealed up. This will make your door more like an enclosure, therefore giving you more midbass that was simply leaking out from the door before.