Polk dx subs and 400.4 amp

[snappyjb67]

i just upgraded to a punch 400.4 amp. its pushing two dx 12's giving them 200 w rms each, at least thats what it should be. i had a kenwood amp before giving each sub 120 w rms before this one and it was louder and sounded better! i was wonering if anyone out there has this amp or anything like it. because i have never seen a bridgeing method like this before: it says to connet the - of the front channel and connect it with the + of the back channel and the - of the back channel with the + of the front, and then vice versa for the other sub...could this be where i am losing performance? i am running 4 awg power wire to a distributer block wich then turns into 2 8 awg cables wich i have running to each of my amps, could it be i need more power? and if so how can i get more power? also, would u recommend that amp for pushing my dx comp sets instead? God, i have a million questions....better stop there.....thanks!

[Kim]

If your goal is to improve on the performance of the subs, then I would suggest using the 400.4 amplifier to drive the component
speakers. It has all of the power needed for this application. This amp is a little "small" for driving the dx12's in a sealed enclosure of .88 cubic feet per chamber. These woofers like to see a power rating of 300 to 600 watts to obtain the best possible performance. You might want to look at the 800a2 and bridge it mono to drive the subs. The other option is to look at the BD1000a1.

Thanks,
Kim

[Tim32432424]

I have 2 DX12's and i use the 800a4. I run it bridged and get 400 watts to each sub at 4 ohms. I also have 4 awg wire to a distro block then 8 awg to the amps. The subs are very loud but my friend has the same subs run off a much smaller amp and I couldnt really tell the difference, dont get me wrong the subs sound great, but something tells me either the rockford amps kinda suck or I have it wired wrong ( I also have it wired as it says in the manual).

[sc0tty8]

Eh, I am not impressed with rockford...


I would not use a 4 ch. amp to begin with. It is not a sub woofer amp. Look into a 2 ch. amp or a mono amp. Use the 4 ch for components and get a differant amp. I would also add a cap. Caps do make a diff if your electrical system is choking for juice. It also depends on your box layout/position.