What happened to diyaudio?

[planet10]

Originally Posted by Bas Horneman

What he means to say is that they are decoupled from each other. I.e. there is a suspension system between the various drivers. And the resonance frequency is very low (as it should be). I.e. somewhere below 20Hz? Hence the term subsonic..... I suppose.

When Bill Perkins did this on his PR2 (late 70s), i believe that the decoupling was something like 4 Hz. The same prinsipal is used on suspended turntables.

You'll find the same stuff used in anechoic chambers, concert halls, and theatres to decouple them from environmental noise.

dave

[planet10]

Originally Posted by planet10

Interestingly enuff, i had this link passed to me today... looks like some intersting stuff (i've not had a chance to consume it yet. I have a feeling it may be relevant.

Information for prospective students

I've started reading. Very interesting.... start with the HiFi Critic summary.

He has shown that humans can detect time differences on the order of 5-6 usec (1/t = 200-167kHz).

As interesting was some of the lenghts he had to go to to not have the test gear corrupt the results.

dave