The setting on your HU is basically a XOver
That sets the upper bound of the frequencies you will send to the Sub amps. Try setting it to the other values. Right now you are only sending frequencies of 50Hz and lower. Also your amps probably have a crossover setting too. Try using one amp per sub bridged. This would double the power. If you are not sure how to set up the amps, go to RF's website and download the manual. You should be fine with those amps. But, you may have the wrong drivers for that setup.
Quote:
Originally Posted by callen
They're sort of in a box....have MDF on top, behind with metal on other sides. Have two channels...L & R with one running each sub. Have Base and Treble adjustment on Amps with Treble turned off. Also my head...Pioneer DEH-P3600 has dedicated RCA's for Sub amp so I can select what frequency I send back......think 50-80 or 120. Not using crossover. Currently selected 50. They are cheaper Pioneers so not sure about the IF thing on subs. I do notice when I disconnect one of the subs the other gets louder...or thumps better. Mosfet?