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. 50W handling, 125W RMS?????

Discussion in 'Amps and Cabs [BG]' started by ReCkLeSsAbAnDoN, Jun 23, 2002.

  1. ReCkLeSsAbAnDoN

    ReCkLeSsAbAnDoN banned.

    Jun 13, 2002
    Ive been looking to get a new combo amp. I found some I liked but am confused on one thing. ". 50W handling, 125W RMS" What the hell does that mean.Please help!
  2. Wxp4759cb


    Nov 23, 2000
    Columbia, MO
    If you run a sin wave through a cab the RMS value is the most watts you could use without damgaging the speaker. If you double the RMS you get the program rating. This is the amount of wattage the cab can take from a source with peaks and silence like a bass or guitar. If you double this you get the peak rating. That is the absolute most the cab can take without frying.

    However in a combo the amp should be matched to the speakers so that you just have to worry about overall wattage for volume.
  3. DBeall


    May 10, 2002
    Vancouver, Wa
    RMS = root mean square.

    It is ~ .707 of the peak wattage.

    RMS is usually the recommended amount of current put towards a cab, you can exceed this but caution must not be thrown to the wind.

    If you have an amp that pushes more than rms or even peak, becareful with your gains as to not exceed the mechanical or thermal limits of the driver.
  4. JMX

    JMX Vorsprung durch Technik

    Sep 4, 2000
    Cologne, Germany
    You sure you didn't get them mixed up?

    RMS usually is the lowest rating, e.g. 50 W RMS, 125 W peak power or program.

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