Official C12 Clone - Build and Support Thread

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If you remember from a couple posts ago, the frequency response of each mic was nearly the same. Well, I got the C12 capsule from Mic & Mod, and did the test again. Spoken word, so the range is limited to my voice. Regardless, I think the result is interesting.
Like before, the green mic is still the 460 with the (almost full) mini-mod.

The previous response graph for reference:
Stock Capsule Response.PNG


The purple mic is now loaded with the C12 capsule from Mic & Mod.
Capsule - green stock, purple M&M K12.PNG

The purple mic definitely rolls off sooner up top in both graphs, so some part of it is definitely the circuit. BUT, it appears that the C12 capsule pushes that roll-off even harder. The rumble at the bottom is ambient noise, but the C12 capsule does grab more of it. I'm going to call this purple C12 build finished and move on to the next mic build. I've got this left over 32mm capsule that needs a home, and I've got just about everything needed to give it one :cool: .
 
Hi! I have Matador's power supply pcb v1.5a-2024. My question is regarding position c10. On the pcb is the place for the small capacitor but according to the schematic, and what I have left; is the bigger one. My question is; do I try to fit this bigger capacitor on the pcb board position c10 or I leave it empty..Thanks in advance for your help...
 

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Hi! I have Matador's power supply pcb v1.5a-2024. My question is regarding position c10. On the pcb is the place for the small capacitor but according to the schematic, and what I have left; is the bigger one. My question is; do I try to fit this bigger capacitor on the pcb board position c10 or I leave it empty..Thanks in advance for your help...
From Matador:
Apologies for the confusion. This is due to a BOM change between 1.4 and 1.5(a).







The original board was designed to be configurable between a passive heater supply (e.g. simple RC filtering), and an active heater supply (the LM317). After all of the hundreds of people that use the psu, exactly zero of them ever wanted to use a passive heater supply. :)







Since it took up so much of the board space, I reduced the final capacitor from 4700uF (intended for the passive supply), to a 10uF/25V. However for an active supply, this capacitance isn't needed as the heater load is essentially constant current, and the datasheet recommends an output capacitor "to improve transient response":















In short, you can just leave it out.
 
From Matador:
Apologies for the confusion. This is due to a BOM change between 1.4 and 1.5(a).







The original board was designed to be configurable between a passive heater supply (e.g. simple RC filtering), and an active heater supply (the LM317). After all of the hundreds of people that use the psu, exactly zero of them ever wanted to use a passive heater supply. :)







Since it took up so much of the board space, I reduced the final capacitor from 4700uF (intended for the passive supply), to a 10uF/25V. However for an active supply, this capacitance isn't needed as the heater load is essentially constant current, and the datasheet recommends an output capacitor "to improve transient response":















In short, you can just leave it out.
Thanks a lot!!
 
HI! What are the current options when it comes to c12 mic body and head basket? I have been trying to get in touch with studio 939 but without success. On there web page, the mic body is sold out. Do you guys know or can suggest some other options for the mic body (c12) which would fit matador pcb?
 
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