My speaker choices and a question

[Vega 10+ year member]

I don't have any good audio shops around at actually hear these speakers so I wanted to know which one of these is the best overall.

Alpine SPR-69LP

MB Quart DTE 169

MB Quart DKE 169

This is probably a dumb question but can I use my factory amp to power aftermarket speakers?

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[Echo42987 10+ year member]

For those you won't have a problem running them off of the Factory head unit. Putting an amp to them will give them a little more edge. I personally rate the Alpine SPR a 6 out of 10 and the MB Quarts like a 6.5. They are so simliar I don't think you'll go wrong either way. (my opinion)