| Re: sonotube tuning......14hz??
I don't think anything to the effect of "it sucks" was ever mentioned. Limited to 223 liters, an infrasonic tuning essentially results in a FR similar to that of being sealed - you do retain the advanatges of lower distortion and more headroom though.
Inputting driver parameters into WinISD isn't too difficult. Create a new driver and use the data in my attached picture - enter the green and let it calculate the blue.
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