Car audio help required?

[mrwillz]

u will never get a good result with an AMP under $300 especially to pump 400watts RMS sub

u need at least 400 watts rms AMP ......... very simple

i fink i've got the same situation as u
under 300 will b very hard to find a monoblock
wot i did , was buy a cadence 2 chan when bridged 1x300rms which stil pumps prety hard into my pioneer 12 (i got tsw306c). having sed that im only running 1 sub. so u'll need to double up on that on a minimum.
i got my amp for about 350 back then

<$300, Jaycar 4 x 130 or the Monoblock.

best bang for buck amp.

this is a good choice as well if ur really tite on money.