I really liked what I've heard about long term reputation of the PPI and Crossfire amps.
Found out that the PPI P600.2 has a manufacturer spec rated high channel separation threshold of 37db, and then that the 900.4 (same line) was actually tested by a 3rd party to be even worse than that. So I ruled it out, although given how small and efficient it is, it could certainly be a great sub amp (since crosstalk won't matter).
I couldn't find anything out much about that newer Crossfire model. Whereas on the other hand, there's lots of talk on other car audio forums of the BA GT series. I ended up going with the smaller GT-275
instead since it's going under my seat and because of its price. Admittedly, I'm already spending enough on this build (I just bought the HU, too) with $200 in sound deadening materials (Audio Technix 60 mil Deadner
and RAAMaudio Ensolite IUO
) added to the items above.
So I'll run the front speakers with the GT-275, and hook up the JL Audios to the HU rear output so that they are there to use when people ride in the back seat.
Next step: try NOT to think about buying a sub and a monoblock amp for a few months. LOL
Your questions are answered: Speaker FAQ
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