Hey Op, Have you considered Type S speakers from Alpine. No need for an amp for the type s and they are miles ahead from a stock system. Given you have 50wx4 headunit at minimum 52wx4 head unit would be better. Nice clear sound with that oomph.
No way, you can get much better speakers for the price of type S. Same seal with type R... Such as the morel maximos. And the basic focals.
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