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Old 11th Mar 2018, 1:37 pm   #3
mark_in_manc
Octode
 
Join Date: Nov 2011
Location: Manchester, UK.
Posts: 1,872
Default Re: Pre-amp for Golden ears

Quote:
Originally Posted by Radio Wrangler View Post
Alternatively, add mass.
I occasionally used to design inertia-block machine suspensions for vibration isolation. The thought of doing this for a bunch of valves made me smile. (Although - I once screwed a rubber-mounted xlr socket to a church lectern for similar reasons. But alas, Fourier tells us that the Dirac delta function contains all frequencies, including those around the LF mass-spring resonance one has just introduced into the system. Bad news for Bible-thumpers ).
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