There are a lot more things to consider before putting any components into your ride. If the install is not exceptional, you may be dissapointed regardless of brand choice.
- Sound deadening. If you are using your speakers in an infinite baffle environment (like a door) then please consider using some good quality, poly-butyl based sound deadener like Dynamat Extreme, Hushmat or similar. Don't use cheaper tar-based deadeners as you will hate it in the summer time when it 'unsticks' and smells life a hot roof.
If you can, deaden the outside of the door panel AND the inside.Here is a shot of my 350Z's door with husmat on it:
- Amplification. Powering your new components off of the stock amplifier is somewhat pointless if you are looking for a lot better performance. Running an amp with a minimum of 50 watts per channel with be powerful enough for most entry level speakers. I run 200 watts RMS to my Digital Designs DD-A mids with NO passive crossovers (I'm an active kind of guy) actively crossed at 63 hertz and it hits you right in the chest. I must point out though that I am also using custom fibreglass door panel pods as well in my 350 which helps a ton. I run the same speakers in my TSX in stock locations and I can still cross down to 63 hertz no problem.
- Speaker choice. This is where you have to decide what sounds best to YOU! Telling you to buy a certain brand is kind of like going on a blind date with your buddies' hot 'friend' only to find out she's a 300 lb heffer with a hairlip. Listening to a bunch of speakers (hopefully in a car) is imperative. Please don't take our word for it!
So if you want subwoofer bass out of some mids then thats simply not going to happen. A good set of components do not have to cost you $1000. You can get a decent set for well under $500. The Polk MM's are actually a really nice set in my opinion as long as they see a reasonable amount of power and have some good sound deadening behind them. I think the tweeter is more important quite frankly because of the huge difference in materials and the wide range of sounds that they produce. I prefer a soft dome as opposed to metal. But thats just me. Good luck!