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CSS Sub – Weird Sound at Low Feequency
Hey all. I have a CSS SDX12 that I love. I noticed that I get a popping sound at what I think is low frequency. Wondering if I just need to adjust the EQ to no play below 17 Hz or so.
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3 Replies
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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.
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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.
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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.