Originally Posted by NikNak929
What is a good speaker brand and the biggest size that will fit in the sound bar? I want a good quality speaker.
For a 2002 and older sound bar, 6.5" speakers fit fine. Sound pods used 2003-2006 are pretty well limited to 5.25" so far as I know.
Don't worry about how many watts the speaker will handle, that isn't important with a stock head unit that doesn't put out much power anyway. The most important specification is the speaker's Sensitivity rating. Without a high, like 90 dB or higher, Sensitivity rating, the stock head unit won't be able to drive it. Polk's DB line of speakers is one that has a sufficiently high Sensitivity rating that means it will sound good with a lower power amplifier like a stock head unit has.
Speakers with a lower Sensitivity dB rating like down in the 80's will only sound good with a fairly high powered auxilliary amplfier.