Odd match

[PhilGood]

Tell me how you think this will sound? I'm not done yet, but am taking a chance.

I have taken the body of an MXL 992, gutted it, installed a Sony C-37/38 capsule and built the circuit for a Telefunken U47 using an EF14 tube. I'm also using a Cinemag transformer that is meant to be an upgrade for the U47 transformer.

I'm thinking that because the 992 has a more open grill it will sound pretty good. I removed the inner screen from the grill to lessen the reflections. The grill on the C-38 is pretty dense, so this should open up the sound quite a bit.
I'm going to base the power supply on the Royer mod PS, since the voltages are close.

Do you think it will be a decent match? Should I try a capsule more like the Peluso CEK-367 instead? Is the Sony capsule suitable?

Maybe I just have the jitters because I don't know what to expect. I'm hoping I get a sound similar to a real U47, since I'll never be able to afford one. There's no way I'd ever be able to get my hands on an M7 capsule.

What do you think?

 

[Big Kenny]

I think you have too much time on your hands. Nah, sounds pretty well thought out, I'd love to hear a track or two.

 

[kidvybes]

What do you think?

...I think that before you commit to such an endeavor, take proper precautions and build me one first...just to be safe...

 

[Marik]

Tell me how you think this will sound??

Who knows... depends...

Sony C-37/38 capsule and built the circuit for a Telefunken U47 using an EF14 tube.

Your EF14 better be quiet. The C37 is quite a low output capsule, so you might get into S/N issues.

I'm going to base the power supply on the Royer mod PS, since the voltages are close.

95V Royer is kinda on a low side. If you want to use cheapo transformers then I'd do something like Gyraf G7 PSU. Also, Antique Supply has some smallish 120V/12V trafos for under $20.

Do you think it will be a decent match? Should I try a capsule more like the Peluso CEK-367 instead?
Maybe I just have the jitters because I don't know what to expect. I'm hoping I get a sound similar to a real U47, since I'll never be able to afford one. There's no way I'd ever be able to get my hands on an M7 capsule.

What do you think?

Me thinks that you won't get anything similar to a real U47, unless you make grill construction exactly the same, use M7, VF14, original Hauffe, etc.

Don't take me wrong, you could make a good mic, maybe even "better" than U47, for what it is, but not similar.

If you want the sound at least going in the same direction, I am afraid you will need to use a good old PVC M7.

Oh, and never say never. Who knows? May be one day, if you ask me nicely, and I will be kind enough, I might consider selling my UM70 with PVC M7 in a good shape. Maybe even for a resonable price

 

[chessrock]

What do I think?

I think you should build me one.

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