Do I need an amp?

jpaul

Member
:
Mazda 3 2010 gs 4dr sedan
Hi everyone
My car is a Mazda 3 2010 gs 4 doors sedan that I bought used.

I am going to replace my factory speakers with 2 pairs of alpine spa 517. The RMS of the speakers are 75 each so I was wondering if it is alright to use it without putting an amplifier because I'm using the factory head unit?
Putting an amp will cost $250 so for a student it is kind of big money haha.

Note; I have a double sub which is connected to an amp in the trunk.

And I heard that Mazda 3 come with a built in amp is that true or come only with the factory Bose option?

Thank you so much for helping me.
Jpaul
 
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