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s7oned wrote:

i have heard putting subs at the back facing forward have more
cancellation issues due to wave bouncing off the back end and
cancelling the front wave...i read it in a website...

You can also read about alien visits on websites too. At bass wavelengths (17
feet @ 60 Hz and much longer at lower frequencies) there just aren't any
"cancellation" issues going on in the car cabin.

In your living room the standing wave region will occur in the bass range
(roughly 30 to 300 Hz) but in a much smaller space this is shifted up by about
an octave (60 to 600 Hz in a small car.)

But even at 60 Hz any 'cancellations' will occur at a fraction of a wavelength
(200-300 Hz) and not at the fundamental.

and according to
it.. subs facing back and as close to the trunklid or hatch USUALLY
yeild best results.

Often it will; but not for the reasons stated on that website. The only
advantage of subwoofer orientation is that facing the woofer/port away from the
listener reduces the possibility that mid-range sounds and driver/box/port
noises will be less likely to be audible.

..HOWEVER..i recommend you try them out and see whats
better...shouldnt take too much effort.
--
s7oned

Good idea.