Hello Bob

Re: the Hsu VTF-3 MK3 bass extension, Hsu has not qualified the claimed output of 18Hz.
Be suspicious of any claims (from any company for any speaker) of frequency response without the qualifying +/- “#” dB.
The way they have stated this claim of 18Hz should we believe it’s at – 3dB, very little decrease in SPL :), or -10dB, twice as low as the reference 0dB.


Axiom is at least forthcoming with it's response claims.

Those who have long enjoyed such privileges as we enjoy forget in time that men died to win them.