[m6gt]

I see we agree here..


I mean you put speakers in your car that need 90 watts
stock head unit 30 watts or so
equals a overload that at somepoint most likely will fry it..

ummmmm....HUH????

U are mis-informed my friend.

So ur new speakers can take 90 watts...OK
The stock head unit can only push out 30 watts....great

Where's the overload?? There is none. Your speakers are just underpowered. The radio is not affected, the radio is strictly limited to the 30 watt output .

Now if the OEM speaker has a 4 ohm impedance and u replaced it with a 2 ohm impedance speakers, then u have a problem. Theres your overload.

 

[m6gt]

Yes, upgrading speakers WILL void bumper to bumper warranty. No questions asked. Bolt ons depending on what they are, can potentially void warranties.

WILL NOT


google the magnuson-moss warranty act that was enacted back in 1975

^^ that is a federal law, so its applies in the US. Kia cannot make the waranty conditional because u replaced your speakers. The speakers would have to be proven with out the benefit of a doubt to have caused failure to the OEM headunit. If you undertand audio, how the basics of a loud speaker works, and how a basic audio amplifier works, then u can see why and how speakers can not void a manufactures warranty if your properly installing them or using them.