Re: D-47 Tube Mic Kit DIY Solution
« Reply #80 on: February 27, 2020, 10:14:37 AM »
When will these be back in stock?


Ryan


Re: D-47 Tube Mic Kit DIY Solution
« Reply #81 on: February 27, 2020, 02:56:19 PM »
Are your voltages where you want them? I assume you mean the extra current draw from the relay running off B+. If your voltages are higher than you want them, you may need to change the power supply dropping resistors. All depends on component variances, wall voltage, etc.

Sorry for the delay. I was, in fact, referring to the extra draw from the relay. My voltages all seem happy, I just thought I'd inquire in the event there was something I was overlooking.

Thanks again!

Re: D-47 Tube Mic Kit DIY Solution
« Reply #82 on: February 29, 2020, 10:47:13 AM »
I finished my D47 and couldn't be happier with the sound (and look)!  The quality of this mechanical kit is so amazing.  I used a FAB transformer, Telefunken EF800, and Dany's D7 capsule.  I had an old Telefunken badge to slap on it just for fun.  Martin's ultimate tube mic PSU case from Analog Vibes is really awesome for this project too.

I also had the issue with my B+ being too high because of the lack of relay not drawing current.  Dany's PSU calculator spreadsheet is really handy for figuring out the drop resistor values, I ended up with 110k at R1 and R3 to get to 105V.

Thanks again Dany for putting all of these amazing mics within our reach (and for your help as we build them)!  I've done a D251, a D67 and now the D47 and they all sound stellar  ;D


 

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