Hard disk noise

[antubaro]

I am finally getting happy with my Transrotor Z1 + Decade Cube from Lehmann Audio, Meridien CD transport and dedicated MacBook Pro with Amarra/iTunes + VESTA interface from Weiss + Audio research DAC7 + Threshold T2 + Threhsold T50 + Wilson audio Duette .. but the hard disk is still noisy. Whatever I tried was noisy and even 24 decibels are too much while music is not flowing. I manged to get the hard disk (firewire interface) in a different room that opens into my music room: better but not ideal yet. What is the frequency of a hard disk noise? I was about to download a spectrum analyzer and to the measurement myself but I wonder if anyone already did this kind of measurment. Once I know the frequency I can by the appropriate insulation panels.

Thanks,

Andrea Tubaro, Rome, Italy