janahdfrazier
New member
I recently purchased two of these.
It looks like a u87 capsule, but it is a cardioid, single sided diaphragm with only two leads.
I had hopes of popping these into a couple of MXL V63M microphones I had laying around, and I knew I had would have to contend with an extended HF response, but what I was not prepared for was a huge drop in output. The output of these "rk87" capsules is much lower than the stock rk47 found in the V63M, so much so that the S/N ratio makes them unusable on anything but a very loud source. Despite this, they do sound *much* better than the stock MXL capsule, so I am inclined to find a way to make them work.
Is it normal for an rk87 capsule to have a lower sensitivity than an rk47 style? Are these capsules defective? Is it possible to modify the V63M to accommodate this rk87 style capsule, maybe with a quieter FET? If it IS possible to increase the S/N ratio, is there also a HF attenuation mod that can be made without an entire revamp of the schoeps circuit? So many questions!
It looks like a u87 capsule, but it is a cardioid, single sided diaphragm with only two leads.
I had hopes of popping these into a couple of MXL V63M microphones I had laying around, and I knew I had would have to contend with an extended HF response, but what I was not prepared for was a huge drop in output. The output of these "rk87" capsules is much lower than the stock rk47 found in the V63M, so much so that the S/N ratio makes them unusable on anything but a very loud source. Despite this, they do sound *much* better than the stock MXL capsule, so I am inclined to find a way to make them work.
Is it normal for an rk87 capsule to have a lower sensitivity than an rk47 style? Are these capsules defective? Is it possible to modify the V63M to accommodate this rk87 style capsule, maybe with a quieter FET? If it IS possible to increase the S/N ratio, is there also a HF attenuation mod that can be made without an entire revamp of the schoeps circuit? So many questions!