blake_peanut said:It has a lot to do with your budget. How much are you willing to spend and what kinda sounds are you looking for?
tsunami said:i would not go with full range... if you want to spend 3 bills on full range speakers why not go with some nice components/a sub/and a 4 channel amp to power them all...
6.5comps=200
sub=100
amp=250-600 (depending on what you want)
8awg/4awg pwr cable=50-75$$
sub box=50
much better set up and not that much more money...
though if you want a full range drop in speaker un amplified i would suggest the alpines...
BrianG said:If you decide to go amplified, the route Tsunami described will work well.
You really have to decide whether you think you will ever go amplified. Speakers that work well with deck power won't usually take much power but are quite efficient so can go fairly loud running deck power (around 10-15watts rms).
However, if you get speakers that will take a decent amount of amplified power (around 50-75watts rms), they won't generally be as efficient and so will not sound as loud running on deck power. Once amplified though, they will sound much better than any speaker running on deck power.
If you just want to replace the factory speakers with something that sounds better, then take a look at some Pioneer 6x8's, which will drop right in. They start around $60 at Crutchfield, but probably can find a better price on Ebay. Those sound good and are fairly efficient so you'll get decent volume from the head unit's power. The price goes up from there.
rotwiler said:The Infinity reference series sound great in my MZ3, I have them up front and going to do a set in back too. Sound quality and highs sound 10x better. I am running them off a 52x4 stereo and is plenty loud and clear. If you go with the Ininity Kappa series you will need a amp to run them, they handle alot more power and underpowering them could ruin them. I see the Infinity reference series all the time on ebay for about $44, so about $100 shipped for all 4. I did think about taking my front Infinity's out and moving them to the back, then getting a component(think Infinity makes them in the reference series too) and mount the tweeter up near the side mirrors for better imaging. If you want to keep in a $300 range and have a good sounding system, I would get 4 reference series Infinity's, a amplified 10 or 12 in a bandpass box and the install stuff. I see amplified subs all the time for under $100, not the best stuff, but it will sound good. Even a Infinity basslink amplified sub would work good, but they are around $190 shipped, then you still would need a line to rca converter and the amp install kit, so your cost would go to $400 or so.
reniccc said:I am going to get a pair of infinity kappa series, but after I read your suggestion, I think I will hold and wait for a while, because you said kappa series need amp to run, I have no idea where should the amp to be install, and what else do I need if I am going to install an amp. I thought I can just buy a pair of Infinity kappa series and install them alone with Mazda head unit, but would the sound quality strange? or alot better than stock speakers? An amp is to provide heavier bass right? if I don't install an amp, do I get any bass at all? thanks
rotwiler said:I've also heard good things about the Alpine. My 2 choices in my other car were Alpine and Infinity. Both are efficient and should sound good off deck power, just don't try to go overboard and get speakers because they can handle more watts unless you are getting a amp to put to them.