Hear 20hz as separate tones.

[ehabheikal]

When i run 20hz to 30hz or so on my spearers/subs and iems i hear it as separate tones. After 30 or so it merges into a hum. Is that normal or am i listening to the distortion byproducts or are my systems flawed
My gear is in my signature

tone generator used.

Online Tone Generator

Simply enter your desired frequency and press play to hear your tone. It's free, simple and easy to use.

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[Cbdb2]

20hz is hard to hear. Your 20db more sensitive to 40hz and 35db at 80hz the first 2 distortion products. Also speakers have the most distortion at 20hz, those speakers are down 50db at 20hz. And some tone generators have a lot of distortion. Found this about the subs "The SB-1000 Pro can be pushed into a hefty level of distortion atlower frequencies, and that is expected since the entire onus of airdisplacement rests on a 12” driver with 13mm of Xmax, and that will reach itslimits relatively early in deep bass below 30Hz."
So yea i think your hearing distortion, but this is normal at 20hz at high SPL which is the only way you'll hear/feel any 20hz. There's almost no 20hz in music and with movie sound fx, if there is any 20hz, the distortion wont matter. Do you think your lacking bass? I don't think you have a problem.

 

[Doodski]

When i run 20hz to 30hz or so on my spearers/subs and iems i hear it as separate tones. After 30 or so it merges into a hum. Is that normal or am i listening to the distortion byproducts or are my systems flawed
My gear is in my signature

tone generator used.

Online Tone Generator

Simply enter your desired frequency and press play to hear your tone. It's free, simple and easy to use.

onlinetonegenerator.com

This is for audio use and so does not include triangle, sawtooth and square waves but it does have easy adjustment and sweep capabilities.

Online Tone Generator - generate pure tones of any frequency

szynalski.com