2004 chevy trailblazer_lt
will 3.5in speaker fit in the dash opening? i dont have the bose stereo.
he's not gonna get better sound out of more power or more speakers.There are two ways you can go about making your system louder, the first approach is to add more speakers, which can be really impractical ,such as installing random speakers in the dash, thats impractical... the same thing goes for people that try to put sixteen 12" subwoofers in the trunk of a corolla ,more is not always better.
The second approach is putting more power on whats already there, aka amping your speakers, this would be the most logical approach to what your trying to accomplish, just buy a 4 channel amp and work with whats already there.
Also just to put it out there, this is how it usually goes..
Doubling your cone area will give you 3db, aka going from one 12 to two 12s in the ideal world would give you a 3b increase
Doubling your power will give you a 3db increase, so going from say 100 watts to 200 watts should in ideal give you a bonus of 3db
I follow these guidelines pretty closely, if im working in a trunk car its retarded to try and stuff sixteen subwoofers in the thing to try and be loud when you can get the same results by just putting more power to whats already there and saving yourself alot of space and money in the process
It always cracks me up when people stuff as much as they can in tiny spaces when they could of just one good thing and a bigass amp to throw on it and got the same or better results
More speakers "can" NOT will, improve imaging and lend itself to a better soundstage if done properlyhe's not gonna get better sound out of more power or more speakers.