Subwoofer fluttering


Help! I have a pro ject x2 ,songbird,mc,Allnic 1202, when I increase the volume,40%,my sub begins to flutter violently,sound goes to SH.. I tried to adjust gain,not sure what’s going on? Thanks Jeff R

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That arm and cartridge combination is a tad below the resonance frequency of 8hz.I doubt that would cause a problem. You might have an acoustic feedback problem. What do you have the table sitting on? BTW, remove the dust cover and see if that helps!