I was reading something in the NissanBayan Forums..and there was something about a P5,000 sound system. I also have a question below.

Here it is below:

.....ok, an all targa setup is nothing new to us you might say. but what set this car apart from the others is that, all are running via HU in 2 ohms. the speakers are 4 targa coaxials front and rear wired parallel through the HU's front speaker level out. the rear speaker out powers the 2 x 10" targa running IB(free-air). his HU btw, is a pioneer(forgot the exact model)...but it's the same series as the 7450.

once in the driver seat, i noticed that the sound was pulled all the way to the back where the 2 coaxials and the 2 x 10" subwoofers. ok, imaging is not its strong suit. but the tonal balance is something you will be amazed with. in fact, if you take-out the imaging in the equation and just based in on it's overall tonal balance...this car would easily put to shame most setups with a budget 3 to 5 times more......

U can hook up a Subwoofer without an amp? or does this guy have an amp??