My MSI MAG Z790 motherboard supports rear channel speakers.

If I were to mount a pair of speakers behind me, that would require approximately 15 feet (4.5 meters) of speaker wire from my PC to the speakers. Do I have to worry about the AUX port’s power output if I were to use 18 or 16 gauge speaker wire?

  • glimse@lemmy.world
    cake
    link
    fedilink
    arrow-up
    5
    ·
    edit-2
    6 months ago

    Those are passive speakers that won’t work without an amplifier. You need some PC speakers with an aux input

    You can’t go from 1/8" to speaker wire

    • MD756@lemmy.worldOP
      link
      fedilink
      arrow-up
      3
      ·
      6 months ago

      Can’t believe I forgot to include that tidbit, that they’re passive speakers.

      Isn’t the motherboard itself the amplifier?

      • glimse@lemmy.world
        cake
        link
        fedilink
        arrow-up
        5
        ·
        6 months ago

        Unfortunately not, the motherboard only has a preamp. Those ports output a line level signal and the speakers are expecting speaker level which is post-amplification which is a MUCH stronger so it will be extremely quiet - if not completely silent

        You can buy a cheap 2ch amp but I think you’d be better off with different speakers. It wouldn’t be a bad idea to get a second set of whatever you’re using for the front speakers to match the sound profile

    • Telorand@reddthat.com
      link
      fedilink
      arrow-up
      3
      ·
      6 months ago

      8Ω is pretty low impedance. By comparison, the Sony MDR7506 is 63Ω, and they work just fine with the amp built into my mobo at only 10%.

      Are you sure?

      • glimse@lemmy.world
        cake
        link
        fedilink
        arrow-up
        5
        ·
        edit-2
        6 months ago

        I’m pretty confident but not 100% sure, I’m on my phone and only skimmed the manual.

        Impedance isn’t the issue here, headphones are completely different - their tiny speakers need significantly less power to drive them. I don’t think the motherboard is capable of moving the cones in the speakers OP linked

        The giveaway here is the inputs - your headphones have an aux (or 1/4"?) input and these speakers have speaker wire inputs

        • Telorand@reddthat.com
          link
          fedilink
          arrow-up
          3
          ·
          6 months ago

          I mean, you can always solder a 1/8" stereo connector onto those wires, but the point about wattage isn’t something to be ignored, and I forgot that.

          Thanks!

          • glimse@lemmy.world
            cake
            link
            fedilink
            arrow-up
            3
            ·
            6 months ago

            I did some wacky cable conversions when I worked in the field but it was usually just to extend line level

            Analog audio is fun lol