Soliloqueen's k87(k67) and k47 capsules

[GREAT TIME]

I appreciate that, but my tastes don't necessarily align with other people's. I'm very sensitive at 5K and much prefer smaller or no boost there, which is not true of most people. Single backplate capsules are contentious in their tuning though. One man's flat might be another man's lacking Mojo and one man's Mojo might be another man's old timey telephone effect. I'll be thrilled if you like it, but if you want you can give me notes on how you want the capsule to sound relative to the Prototype and then send it back and I can design you one that sounds that way and throw it in with the mass production. I can make an M7 or k47 sound just about however anyone wants. Actually, the bad tolerances from the factory were kind of nice because I could separate them by tuning and send different customers with different preferences different tunings. Now that we're doing this in-house and our machining is so much better, I have to pick one. That has been a gargantuan task. Everyone i ask has vastly different opinions on what the k47v should sound like, some of them divergent enough from my opinion that it sounds like a legitimate special effect mic. Can't please everyone though, so I'm just going to go with what I think sounds good.

+1 for preferring a flatter top end. These look awesome

 

[MaxxDM]

By the way...

I remember that M7 capsules originally did not have a peak at 5 KHz, but more around 3-ish Khz, which, IMO, is the correct 'presence' frequency, and not 5 KHz.

I used to have some older pics with graphs, but here is one from (I presume) the 1950s

 

[Khron]

By the way...

I remember that M7 capsules originally did not have a peak at 5 KHz, but more around 3-ish Khz, which, IMO, is the correct 'presence' frequency, and not 5 KHz.

I used to have some older pics with graphs, but here is one from (I presume) the 1950s

That is, though, the response of the complete assembled microphone, not just the raw naked capsule, is it not?

 

[MaxxDM]

That is, though, the response of the complete assembled microphone, not just the raw naked capsule, is it not?

Well, I suppose the resonance in the mic grill has something to do with the freq. response.

The circuit itself is flat, other than cutoff in the bass and treble extension.

anyone know what the resonant frequency of the grill head is?

 

[Khron]

cutoff in the bass and treble extension.

And what's cutting off the treble extension (other than the capsule itself)? Assuming we're talking about the U47 circuit...

 

[MaxxDM]

And what's cutting off the treble extension (other than the capsule itself)? Assuming we're talking about the U47 circuit...

the output transformer, way above the presence region, but within normal 'analog' limitations.

 

[soliloqueen]

By the way...

I remember that M7 capsules originally did not have a peak at 5 KHz, but more around 3-ish Khz, which, IMO, is the correct 'presence' frequency, and not 5 KHz.

I used to have some older pics with graphs, but here is one from (I presume) the 1950s

making an m7 that sounds like this is easy, but i've never actually done it personally. i've never seen an m7 or k47 tuned like this in the wild, so it could have been revised after this to sound different (if this is early) or perhaps this was an odd unit. if this is accurate, it suggests hole dimensions which trend directly the opposite of how they tended to be on the ground.

I have seen some tuned with boosts here but overall flat, without the high end shelf upwards. See the 3u audio dark k47:

and 3u audio m7

that would be the closest to what you're talking about, but there are some differences.