Soliloqueen's k87(k67) and k47 capsules

[MaxxDM]

i made a few m7s tuned like an average of where I've seen early fr graphs just out of curiosity to see how they would sound while testing the tolerances for the m7. I didn't match this specific graph exactly. I might do that next time. anyone want one?
red=k47v
View attachment 146497

i thought i could get away with going out to 5 micron, and i was wrong. the sound is spot on to what I was going for but does not necessarily represent the final tuning of the capsule at all. they are a mess in terms of side to side matching. Only 2 out of 5 are good enough for multi pattern lol with the same voltage on both sides. Perfect FR matching independent of sensitivity side to side tho, so our hole tolerances are good. Will back down to 2.

we've also gone one strange outlier that does more closely match the quoted post on side A:
View attachment 146514

Woah! that's great.

IMO, the boost at 2-3 KHz is, generally speaking, more useful, when it comes to recording lead instruments and vocals.

Also, the dip at 5-6KHz is useful, so that by boosting the top end, when mixing, you get more air and less sibilance.

 

[MaxxDM]

i thought i could get away with going out to 5 micron, and i was wrong. the sound is spot on to what I was going for but does not necessarily represent the final tuning of the capsule at all. they are a mess in terms of side to side matching. Only 2 out of 5 are good enough for multi pattern lol with the same voltage on both sides. Perfect FR matching independent of sensitivity side to side tho, so our hole tolerances are good. Will back down to 2.

What's the difference in sound?

 

[untamedfrontier]

Just wanted to follow up now that I've had my k87 capsule for a little while, and it's absolutely tremendous. It's so good it forced me to re-record almost all of the lead vocals I had finished on my newest project. I think now all of my songs on this album now have either the Flat47 or K87 on them for the lead vocals.

Really tremendously grateful to have these in my arsenal.

 

[micolas]

Just wanted to follow up now that I've had my k87 capsule for a little while, and it's absolutely tremendous. It's so good it forced me to re-record almost all of the lead vocals I had finished on my newest project. I think now all of my songs on this album now have either the Flat47 or K87 on them for the lead vocals.

Really tremendously grateful to have these in my arsenal.

Hi @untamedfrontier ,
Could you post some samples with K87 and K47f ?

 

[untamedfrontier]

Once I release the album, I'll share links to those and with what mic was used, but I did a video here which breaks them down:

 

[Buttercup1]

i made a few m7s tuned like an average of where I've seen early fr graphs just out of curiosity to see how they would sound while testing the tolerances for the m7. I didn't match this specific graph exactly. I might do that next time. anyone want one?
red=k47v
View attachment 146497

i thought i could get away with going out to 5 micron, and i was wrong. the sound is spot on to what I was going for but does not necessarily represent the final tuning of the capsule at all. they are a mess in terms of side to side matching. Only 2 out of 5 are good enough for multi pattern lol with the same voltage on both sides. Perfect FR matching independent of sensitivity side to side tho, so our hole tolerances are good. Will back down to 2.

we've also gone one strange outlier that does more closely match the quoted post on side A:
View attachment 146514

Very exciting! I'm working on U47 bodies at the mo but have nothing to test with so I'd be very grateful for anything even if it only works in Cardioid.

 

[micolas]

IMO, the boost at 2-3 KHz is, generally speaking, more useful, when it comes to recording lead instruments and vocals.

Personally I have always reduced
a bit the 2-3kHz range, on voices or instruments, seemed too aggressive, screaming.
The majority of the general public, the final consumer, prefers a "smile" type equalization.

Maybe that's why most good microphones are rather neutral in this area.

 

[micolas]

Once I release the album, I'll share links to those and with what mic was used, but I did a video here which breaks them down:

Hey, good job!
Wow! Arienne capsules sound best.
ORS87 with K47f did you build it without deemphasis on treble?
We thank you!

 

[micolas]

Hey @untamedfrontier ,
Have you thought of putting the Arienne K87 capsule in the WarmAudio WA-87 R2, instead of the stock one (3UAudio)?
The circuit is modeled after the U87i, with a polarization voltage of about 46v, the jFET is 2N3819 Fairchild NOS, the transformer is Cinemag 13113, the other components are quality, and the Arienne K87 is modeled after the vintage K67, it should sound great!

 

[soliloqueen]

Woah! that's great.

IMO, the boost at 2-3 KHz is, generally speaking, more useful, when it comes to recording lead instruments and vocals.

Also, the dip at 5-6KHz is useful, so that by boosting the top end, when mixing, you get more air and less sibilance.

Personally I'm not a big fan of them like this, I just wanted to see if I could match other charts I'd seen

 

[untamedfrontier]

Hey, good job!
Wow! Arienne capsules sound best.
ORS87 with K47f did you build it without deemphasis on treble?
We thank you!

ORS87 with K47f used 220n cap for Bass (C5 on homero v1.1 board), 100p for treble (C6). Both Ari capsules used J113.

 

[untamedfrontier]

Hey @untamedfrontier ,
Have you thought of putting the Arienne K87 capsule in the WarmAudio WA-87 R2, instead of the stock one (3UAudio)?
The circuit is modeled after the U87i, with a polarization voltage of about 46v, the jFET is 2N3819 Fairchild NOS, the transformer is Cinemag 13113, the other components are quality, and the Arienne K87 is modeled after the vintage K67, it should sound great!

I might end up selling or trading the Warm Audio, it sounds nice, but I prefer it much less than the 2 ari mics. I'm sure popping in the Ari K87 would be fantastic, though. I'd have to spring for a non b-stock if i were to do so though.

 

[micolas]

ORS87 with K47f used 220n cap for Bass (C5 on homero v1.1 board), 100p for treble (C6). Both Ari capsules used J113.

Thanks so much for all the info! They are very useful!
Unbelievable how well the little Neutrik NTE10/3 transformer is doing!

 

[micolas]

I might end up selling or trading the Warm Audio, it sounds nice, but I prefer it much less than the 2 ari mics. I'm sure popping in the Ari K87 would be fantastic, though. I'd have to spring for a non b-stock if i were to do so though.

I was very curious because I also have a new WA-87 R2, the K87 capsules have been on the way for almost 2 months, I can't wait to receive them. I will do the test myself.
By the way, is the capsule in the test K87 B-stock?

 

[micolas]

ORS87 with K47f used 220n cap for Bass (C5 on homero v1.1 board), 100p for treble (C6). Both Ari capsules used J113.

In the test, the ORS87 with the K47f capsule seems to ask for a little more "air". Have you tried with smaller C6, 47...68pF, or even remove it from the NFB circuit? This capsule prefers a flat circuit, without Deemphasis.
In the picture there is a significant difference between the treble of the K87 and K47f capsules.