Old school Rockford Fosgate looking for some advice

Discussion in 'Car Subwoofers' started by scrillacos, Sep 4, 2011.

  1. scrillacos

    scrillacos New Member

    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