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  1. #1

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    Default Rockford Fosgate Power 501bd

    Rockford Fosgate Power 501bd
    Performance of the rockford amp:
    RMS Power Output (Watts x Channels) 300 x 1
    Frequency Response 20-20k Hz
    THD at Rated RMS Power 0.05%
    Signal to Noise Ratio 100 dB
    Input Voltage 14.4v
    Peak Power Output (Watts x Channels) N/A
    Power at 2 Ohms (Watts x Channels) 500 x 1

    would this amp be too much power for two gnx124 subs(wired parallel) in a sealed box?

  2. #2

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    what are the gnx's rated at?
    175?
    -Cody

  3. #3

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    ok i looked it up...they are 175 watts...4 ohm speakers
    what you want to look for is more like a 300wattsx1 @ 2 ohms...the one youre looking at is 500x1 @ 2 ohms
    meaning youd be sending in excess of 400 watts to those speakers that can only handle 175
    i have the older model of that amp...and it puts out 810 watts...VASTLY UNDERRATED
    so if you buy that amp it will be 400 watts of power into a 175 watt sub
    the speaker will die in about 3 seconds
    i think they make a 301s? not sure..but i think...and i think it does 300watts x1 @ 2 ohms
    which is what you want
    and it will most likely be underrated too...putting out 400-450 watts...which is good...400 watts divided by 2....200 watts to each of those subs is PERFECT
    -Cody

  4. #4

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    I have a BD500. Paper says it makes 674 watts @2 ohm. That was before it started to Sing. Since having it repaired, Seems stronger. All they did was something with the Transformer. Resoldered or something.
    If you want to use a 300m, Go to Best Buy. My local one has a couple on clearance. Besides you would still have the Warranty. Unlike me. Had to pay for my repair.
    Chris

  5. #5

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    new RF 2003 models are coming out just at spec basically -- 500 - 550 x 1 instead of the 700 - 800 of old days.


    everybody's downgrading -- i hate corporations -- they oughta build amps that are 50,000 x 1 at 8 ohms with 0.00000001% thd and only costing 100 bucks....

    until that day -- imma keep buyin **** on clearance.
    "With your own attitude it is hard to survive here... But who gives a damn, we are here to change the world, and we dont need a password for that."
    - Anurag

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