Le Roux

Haha!

Thanks for pointing out my dumb error  :-[
Back plate and rear capsule reverse. WOW  :o

Dead quiet and sounds amazing!

Thanks for your help and Danny for the project!

Cheers
Neil


Haha!

Thanks for pointing out my dumb error  :-[
Back plate and rear capsule reverse. WOW  :o

Dead quiet and sounds amazing!

Thanks for your help and Danny for the project!

Cheers
Neil

Glad it worked out ,
wich tube did you use and what bias scheme  and capsule ,
best,
Dan,

Le Roux

RCA 5840
Beesnees M7 capsule

B+ 116 V
H+ 6.09 V
Plate Voltage 41.5 V
0.745 mA

Is that too high for current?
If I raise the B+ to 120V, it increases the current to close to 0.8mA
Like it sounds amazing the way it is

Cheers
Neil
« Last Edit: April 14, 2020, 11:06:23 AM by Le Roux »

Delta Sigma

Did you build the M49 'b' or 'c'?

What transformer?

Le Roux

ioaudio transformer BV11 off the top of my head
M49 "B" Version

Sorr

Are those M49B bodies still available?

TillM

Are those M49B bodies still available?
There was no specific M49b body.
Which body do you mean?

cofrus

Hi ,
Yes I’m having the same issue with the
Studio 939 M49 mic body. As recommended  on Vintagemicrophones web page.

The holes don’t  come close to matching the PCB, because the barrel has a diameter of 65mm and the Vintagemics PCB is 60mm.
Also the total depth between the base of the barrel and the grill mounting is only 38mm whilst the vintagemics design requires a minimum of 40mm.
Stumped.


TillM

Hi ,
Yes I’m having the same issue with the
Studio 939 M49 mic body. As recommended  on Vintagemicrophones web page.

The holes don’t  come close to matching the PCB, because the barrel has a diameter of 65mm and the Vintagemics PCB is 60mm.
Also the total depth between the base of the barrel and the grill mounting is only 38mm whilst the vintagemics design requires a minimum of 40mm.
Stumped.

You have to modified it.
But that’s not the big problem.
Just buy a round acrylic plate with 3mm thickness and drill it for your needs.

 

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