Speakers upgrade on NG4 WIP COM 3D

[Anonymous]

Hi, anyone knows the specifications for the NG4 WIP COM 3D?
For the past week I've been searching but no success.
The reason is because I just bought the Alpine SPG-17C2 (75W RMS) for the doors and the Alpine SPG-69C3 (90W RMS) for the back. Still looking for a replacement tweeter.
Anyone knows if I may have problems running them without an amplifier?
Another question about the cables, should I replace them or the ones already in should be fine?
Thanks!

 

[Anonymous]

Quick update, installed the 6x9 today.
Few points for anyone willing to do the same: Polarity is marked as 1 and 2, as usual, doing the battery test, found the polarity, but that was the easy thing.
Any regular 6x9 will not fit straight from box. The shape is a bit "curved" so to get proper insulation, some material to make the surface in level to fit the speaker. Some bits need to be trimmed also.
Considering that the original speaker was 25W, a believe it is a worth upgrade.