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Need a little help. Amp wattage vs speaker wattage.

Discussion in 'Audio & Video' started by GeauxTigers, Aug 26, 2017.

  1. Aug 26, 2017 at 2:32 AM
    #1
    GeauxTigers

    GeauxTigers [OP] //TRD

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    Need some help, I am completely dumb when it comes to audio and I ordered the Alpine KTP-445U and some Kicker 40CSS674 6 3/4" components for my front doors. The Alpine amp is rated at 45w rmsx4 and the speakers are rated at 2-100w rms with a sensitivity of 90. Should this be alright or should I look at some other components with a lesser rms rating?
     
  2. Aug 26, 2017 at 11:06 PM
    #2
    GeauxTigers

    GeauxTigers [OP] //TRD

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  3. Aug 27, 2017 at 5:53 AM
    #3
    mbrogz3000

    mbrogz3000 Well-Known Member

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    Running a 100 w rms capable speaker with a 45 w rms amp channel is completely safe, and the speaker will probably sound fine. When it comes to coaxials or components, the rms power handling rating will be higher if the speaker is capable of cooling itself constantly, but it doesn't necessary mean the speaker will sound better at the full power rating of the speaker (high volumes).
     
    GeauxTigers [OP] and mlevinson like this.
  4. Aug 27, 2017 at 9:49 AM
    #4
    GeauxTigers

    GeauxTigers [OP] //TRD

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    265/70/17 BFG KO2/17"x7" Pro Sema Wheels/OME 884/Bilstein 5100 front & rear/HeadStrong 1/4" TP spacer/Deaver 1.5"-2" AAL/Mud-Flap delete/Westin Bed mat/UltraGauge/ WeatherTechs/AFE Pro Dry Drop in Filter/debadged/AVS in-channel window visors/color-matched OEM grille/Kicker 6.75" Components in front door/Alpine KTP-445U power pack behind factory head unit/

    Awesome. Appreciate it!
     
  5. Aug 27, 2017 at 3:48 PM
    #5
    65skyturbo

    65skyturbo Well-Known Member

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    You will be fine. With a 90 dB sensitivity you can get away with a lower powered amp. The higher the number, the less power is needed to achieve that dB rating.
     

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