Has anyone the schematic of the UM70 capsule? G7

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BFBS

New member
Joined
Mar 15, 2005
Messages
1
Hi all

I want to make the G7 Mic from Gyraf, but i dont know how the um70 capsule make the diffrent pattern. I dont want to open the casul and the switching on the psu is not my way. :?

Thanks

Flo
 
FLO,

It's not done in the capsule.

Please read through the Microphone Meta - and the material on the G7 pages. A thorough understanding of how these things works is an important part of getting this project working - and it would be a bit dangerous starting building a G7 without understanding the basics.

Jakob E.
 
Jakob,

Flo is right--he just did not word it correctly. The UM70 head has a built in pattern control switch, which commutates (-)/0/(+)voltages from head preamp to the capsule. I would think ground/60V/120V should work, however I need to double check exact bias for M7 and internal connection of the switch.
 
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