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Originally Posted by alanhyatt
Well what I meant by the same, is that they, the MXL603, ADK SC1, and Joemeek JM27, as well as some Cascade and SE mics are all about the same price for a SD mic, all the same kind of shape. There are a couple of differences between the 603 and the JM27. For example, the Joemeek JM27 is a transformer output, the 603 is not!
There will also be a matched pair set of JM27's coming with shock mount s and a stereo bar, so that is cool as well. So answering DJL's questions, they are kind of the same in many way, yet they are different.
I refrain from commenting on which sounds better as that would be a conflict, but I am sure those of you who end up with the JM27, will let us know. We think they are pretty darn good for the money...Time will be the judge...
Brent, if you be hangin around, you can eloborate on the differences.....
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Well, the capsules are quite similar, the circuits are not. Both use the 2SK170BL JFET, but in entirely different manners. The 603 splits the signal at the JFET into two smaller out of phase but equal signals which drive a couple of PNP emitter follower transistors on the output.
The JM27 uses the 2SK170 configured as a common source amplifier which is capacitively coupled to a step down transformer on the output. The capsule is phantom polarized at around +46v.
The board layout is quite nice. A well-manicured playground for any of you DIY'ers out there.
I have recorded with them. If you are interested in my impressions, drop me a pm.
Brent Casey
PMI Audio Group
877-563-6335