Is there a direct proporation for amp power to speaker power?

Discussion in 'Amps and Cabs' started by arpegadream, Sep 3, 2019.

  1. arpegadream

    arpegadream Member

    Jul 25, 2019
    I did study electronics decades ago, but unless someone goes over things with me, it's all rust in the memory.

    I've been looking at DIY Amp kits.

    My question:

    If an amp is 60 watts rated, would 2 30 watter or 4 15 watt speakers be adequate. IOW, are the directly proporational as far as ratings? If a speaker blew, of a set of 4 @ 15 watts rating, would the others blow too given added flow through them on a 60 watt amp? Is there a way to limit this?
  2. Tiny Montgomery

    Tiny Montgomery Supporting Member

    Mar 16, 2009
    Louisville, Ky.
    I like for the speakers to handle at least around 50% more than the nominal output of the amp.

    50W amp>75W speaker.

    Matching it exactly is a little risky, as amp wattage is clean power. An overdriven tube amp will put out more power than it’s rated for, usually.

    That said, some amps and speakers are rated more conservatively than others, so it depends on that, too.
  3. teemuk

    teemuk Member

    Apr 21, 2009
    No. They are not directly proportional. Both ratings are derived very differently.

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