Home Forums DIY Speakers and Subwoofers CSS Sub – Weird Sound at Low Feequency

  • tvor-ceasar

    Moderator
    March 7, 2022 at 9:45 pm

    Wow, that’s nasty massive. Sure does look like it needs a high pass around there. Dial in 17 or 18 Hz, maybe 19, if you can, with a very steep cutoff and try to recreate that same problem. You’ll know if you are on the right track.

  • 123toid

    Administrator
    March 8, 2022 at 12:38 am

    That subwoofer is an underhung motor design that uses a T pole. Basically that T is hitting the front plate (aka you have hit your mechanical limits). You will want to add a steep HP filter around 20Hz to protect against that. I ran a 4th order High Pass centered on 20Hz. You could try something different. But you have two choices, either add a high pass or lower the wattage going to the subwoofer.

  • mattjcurry

    Member
    March 15, 2022 at 11:35 pm

    Thank you for the advice. I’m using a Hypex FA501 for power. I’ll throw a filter on it and see what I get.