6.5 Replacement with decent bass

sadly aftermarkets are engineered to work with a subwoofer. Most if not all coaxials, components out there wont have any actual bass, some will have midbass with proper door acoustical treatments and plenty of amplifier power but on a stock head unit, good luck.  My best  recommendation is to find full range paper cone woofers that can play in to the subsonic frequencies with good sensitivity ratings 89 db or higher  and are very low rms ratings, your stock head unit puts out 3-5 watts rms at best.

Yoel said:

My stock speakers are rated at 4phm 25W, So I guess the output is 15-20W RMS, no?

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nope no stock head unit has more than 5 watts rms. They cheap out on the output stage of the amplification a lot. Just put a multi-meter on AC voltage, put the prongs on your speakers and play music at the loudest and you'll see the wattage output which is next to nothing.  Most people think you need a lot of wattage to get loud, nope, just 1 watt already gets you to a certain level of spl hence the db/ 1 watt sensitivity ratings on speakers.  Needless to say if you want any real results on your system you need amplification, vehicle treatments at the very minimum for any kind of low end from aftermarket speakers. otherwise just go straight into a subwoofer and dont waste any money on rears.

Jeffdachef said:

nope no stock head unit has more than 5 watts rms.

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Sorry, i just HAD to lol.

You asked the same question on DIYMobileAudio and basically got the same response Jeff just gave you only he didn’t sugar coat it. 

17 hours ago, Talontsi90 said:

Sorry, i just HAD to lol.

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yeah but thats not a stock head unit. Aftermarkets head units are 10-15 watts rms. 

Jeffdachef said:

yeah but thats not a stock head unit. Aftermarkets head units are 10-15 watts rms. 

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Haha, i totally missed that word lol.