Hello, new to the forums. I'm running some old school rockford fosgate subs/amps and am looking for some advice on potential changes. Currently, my setup is like this: 2 RFD22215 (punch HX2s) in a dual chamber sealed box (about 2.5 ft per chamber) These are dual voice coil subs with 4 ohms on each coil. Each sub is paralell for 2 ohms. Each 2 ohm paralell sub is run to one of the 2 channels of the amp. Rockford says the amp is 2 ohm stable per channel in stereo. Here is where things get interesting. I have another power 800a2 and was considering running it as well to run those subs harder. However, the power 800a2 is only 4 ohm stable bridged mono. The only way I could see running the 2 15s with the 2 amps is to either: Run each coil of one sub to one channel of each amp or Bridge the amps to one sub each at 2 ohms and risk roasting the amps. The part im struggling with, is the stats in stereo @ 4 ohms per channel on the power 800a2 is 200wx2 rms. Its 400wx2 @ 2 ohms rms. Am i going to gain anything by running the 2 power 800s in stereo to each sub, 200wx2? Seems like it would be essentially the same thing that I can do with the one amp @ 400wx2 @ 2ohms per side. Just reaching out to see if it would make any sense to run that other 800a2, or would i just be wasting space? Thanks for any help, oh, and below are links to the pdfs for the amps/subs. http://www.rockfordfosgate.com/scri...pxfYcDk&p_tbl=9&p_id=331&p_created=1083775120 http://www.rockfordfosgate.com/scri...pxfYcDk&p_tbl=9&p_id=156&p_created=1050097912