Tube condenser mics crapping out
I've been having trouble with a couple of my mics crapping out under high SPL conditions. It has become a problem when I have put in a beezneez k7 in one and a Tim Campbell ct12 in another one.
I am assuming that it is the capsule diaghragm hitting the backplate and shorting out as I can't imagine which other components in the circuit would actually cut out under extreme conditions. The tube and the transformer would go in to saturation and distortion but wouldn't actually crap out I would have thought.
Perhaps I'm missing something though? The polarisation voltage is 60volts which should be fine.
I thought about fitting a pad between the capsule and the valve grid but if it is the capsule itself overloading a pad wouldn't really help.
Are there any clever ways of increasing a capsule's headroom?
It's possible that it could be extra sensitivity to wind causing the crap outs. The original capsule's were 32mm 67 types which didn't have this crapping out problem.
Any thoughts would be great.
Thanks in advance for any ideas.
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