I thought this might be interesting for a few of you to look at.
First up is an Oktava MK13 valve condenser microphone capsule. I believe (but may be wrong) that this was based on the M7....
It is not in great condition!
Next up, here is a Lomo 19A19 capsule, but this one has a treble resonator a la Oktava!
Here is the microphone which it is from:
http://cgi.ebay.co.uk/VINTAGE-CONSECUTIVE-PAIR-RUSSIAN-MKL-5-TUBE-MICROPHONES_W0QQitemZ7381148038QQcategoryZ64449QQrdZ1QQcmdZViewItem
First up is an Oktava MK13 valve condenser microphone capsule. I believe (but may be wrong) that this was based on the M7....
It is not in great condition!
Next up, here is a Lomo 19A19 capsule, but this one has a treble resonator a la Oktava!
Here is the microphone which it is from:
http://cgi.ebay.co.uk/VINTAGE-CONSECUTIVE-PAIR-RUSSIAN-MKL-5-TUBE-MICROPHONES_W0QQitemZ7381148038QQcategoryZ64449QQrdZ1QQcmdZViewItem