On Jun 25, 2022, at 07:41, Richards <jrichards@...> wrote:

?Good Morning Gentlemen!

To Jules -- I follow the gist of your commentary. Obviously I need to learn more about polarizing voltage versus phantom power. I would appreciate leads to the homework I must perform. I am not averse to reading, as I do not expect you guys to tell me everything on the forum. Much appreciated - I believe there is a LOT of buckshot in that one shell (reply) and this is the tip of the old iceberg. :-)

To Thet -- I am beginning to understand how much I do not yet know here. I attach photos of the two capsules in question.
The 1-inch item is described here:

I understand the difference between FET and FET-less capsules and your proposed working definition of "true condenser" is what I intended by the term.

And, I believe we can now get down to the THE NITTY GRITTY . . . Um ... ahem ... er ... I did not purchase both boards for either the OPA Alice or the eBay boards under scrutiny. And given the trend of the discussion ... ahem ... I now wonder whether I should have purchased both boards. After reading Jules articles on www.Indestructibles.com, and a website by an UK mic maven www.audioimprov.com, I was under the impression the OPA Alice board could be used alone, as a substitute for the ubiquitous BM-800 boards. I extrapolated that presumption and ordered just the one board in question from an eBay seller, "hoping" (blithely presuming, actually) it is the equivalent of the OPA Alice board.

To Henry -- Please see above.

So, I now wonder whether I failed to purchase a complete kit for the larger, 34 mm capsules.

I purchased another board on eBay that seems to work well on its own. See photos - board with yellow transformer.

I successfully paired it with this capsule -- See photo of all brass capsule.

I have, therefor had rather mixed results, but I now wonder whether I have, as one of you put it, mixed my apples with my oranges, because I do not (yet) fully understand how the bias thing works.

Gee - I hope this makes sense. It appears I started swimming before I fully learned how! THANK YOU for any further insight you can provide. Happy trails to all. James

On 25 Jun 2022, at 22:41, Richards <jrichards@...> wrote:

Good Morning Gentlemen! ??

To Jules -- ?I follow the gist of your commentary. ?Obviously I need to learn more about polarizing voltage versus phantom power. ??I would appreciate leads to the homework I must perform. ?I am not averse to reading, as I do not expect you guys to tell me everything on the forum. ??Much appreciated - I believe there is a LOT of buckshot in that one shell (reply) and this is the tip of the old iceberg. ????:-)

To Thet -- I am beginning to understand how much I do not yet know here. ??I attach photos of the two capsules in question. ?
The 1-inch item is described here: ?

I understand the difference between FET and FET-less capsules and your proposed working definition of "true condenser" is what I intended by the term.

And, I believe we can now get down to the THE NITTY GRITTY . . . ?Um ... ahem ... er ... I did not purchase both boards for either the OPA Alice or the eBay boards under scrutiny. ?And given the trend of the discussion ... ahem ... I now wonder whether I should have purchased both boards. ??After reading Jules articles on , ?and a website by an UK mic maven ?, ?I was under the impression the OPA Alice board could be used alone, as a substitute for the ubiquitous BM-800 boards. ?I extrapolated that presumption and ordered just the one board in question from an eBay seller, "hoping" ?(blithely presuming, actually) ?it is the equivalent of the OPA Alice board. ?

To Henry -- ??Please see above. ???

So, I now wonder whether I failed to purchase a complete kit for the larger, 34 mm capsules. ?

I purchased another board on eBay that seems to work well on its own. ?See photos - board with yellow transformer. ?? ??

I successfully paired it with this capsule -- ??See photo of all brass capsule. ?

I have, therefor had rather mixed results, but I now wonder whether I have, as one of you put it, mixed my apples with my oranges, because I do not (yet) fully understand how the bias thing works. ??

Gee - I hope this makes sense. ???It appears I started swimming before I fully learned how! ???THANK YOU for any further insight you can provide. ???Happy trails to all. ??James







<1 inch capsule.jpg><all brass type capsule.jpg><s-l1600.jpg><transformer type board 1.jpg>

The problem with chinese is that you know what your order but you don't know what you'll receive.

Le 12/06/2022 à 16:13, thet a écrit?:

The cheap chinese dynamic capsule I have is 450 ohms. Presumably designed for use without a transformer. So the ones you mention are significantly different. Definitely worth a try for the price. I will order a couple.

On 12/06/2022 12:13, Jerry Lee Marcel wrote:

I forgot to mention, quite often these capsules are low impedance (about 10-20 ohms) because they are generally paired with transformer, so the output level is lower than a standard SM57, but since the spl inside a tom is very high, it results in a perfectly compatibe level with a standard mic pre.

Good Day, Thet -

I apologize for any imprecise descriptors in my question. While I am experienced concerning microphone applications - I am just learning the microphone modification game.

This is the board in question:

I have used other boards with good results, for example the popular JLI OPA Alice board an others sold on eBay. I am curious why this one has produce different, and inconsistent results with the same capsules used with the other boards.

I appreciate your the distinction between phantom voltage and polarization voltage - although I confess I need to learn more about both. I am sure you are headed in the right direction concerning 60v polarization.

I am confident both capsules are FET-LESS "true" condenser types. The 25mm capsule appears to be the same capsule discussed today in another thread. The vendor described the 34 mm capsule as an RK87 type. I can provide images or links to eBay if that would help.

Thank you for the prompt reply! Please advise if additional information is required to move forward. JHR

Good Day, Thet -

I apologize for any imprecise descriptors in my question. While I am experienced concerning microphone applications - I am just learning the microphone modification game.

This is the board in question:

I have used other boards with good results, for example the popular JLI OPA Alice board an others sold on eBay. I am curious why this one has produce different, and inconsistent results with the same capsules used with the other boards.

I appreciate your the distinction between phantom voltage and polarization voltage - although I confess I need to learn more about both. I am sure you are headed in the right direction concerning 60v polarization.

I am confident both capsules are FET-LESS "true" condenser types. The 25mm capsule appears to be the same capsule discussed today in another thread. The vendor described the 34 mm capsule as an RK87 type. I can provide images or links to eBay if that would help.

Thank you for the prompt reply! Please advise if additional information is required to move forward. JHR

On Jun 24, 2022, at 12:07, Richards <jrichards@...> wrote:

?Good Day, Thet -

I apologize for any imprecise descriptors in my question. While I am experienced concerning microphone applications - I am just learning the microphone modification game.

This is the board in question:

I have used other boards with good results, for example the popular JLI OPA Alice board an others sold on eBay. I am curious why this one has produce different, and inconsistent results with the same capsules used with the other boards.

I appreciate your the distinction between phantom voltage and polarization voltage - although I confess I need to learn more about both. I am sure you are headed in the right direction concerning 60v polarization.

I am confident both capsules are FET-LESS "true" condenser types. The 25mm capsule appears to be the same capsule discussed today in another thread. The vendor described the 34 mm capsule as an RK87 type. I can provide images or links to eBay if that would help.

Thank you for the prompt reply! Please advise if additional information is required to move forward. JHR

Good Day. So, let's stipulate I tried to match an inexpensive 60v condenser driver board with first, a 25 mm condenser capsule, and second, a 34mm condenser capsule ... and the results were vastly divergent. In the first case, volume, tonality, clarity, etc., were all within expectations. In the second case, output signal levels were substantially lower and while it sounded fairly natural, there was no verve, presence, excitement, articulation - in a word, dull.

Might this have something to do with a) size of capsule relative to b) 60 volts phantom voltage from the board, or c) none of the above - something else is going on? The smaller capsule seems to work with just about any condenser driver board. The larger capsule patterned after one or another famous design works well with some, but not other boards - for example it is a nice drop in replacement for a Behringer B-1 capsule, and it works well with the popular JLI OPA Alice board, but not all boards - say the original BM-500 type boards which produce varying results from good to disappointing. Why 60 v and not the usual 9-48 v requirement?

Any ideas? What makes these larger capsules so finicky or selective? Or ... is it ... ahem ... just me? JHR

On June 24, 2022 at 6:48:21 AM, thet (parenthetical@...) wrote:

How does it differ in sound from the 2555B? Does it have more bass

extension?

The 3412 has more bass and/or more proximity than the TSB-2555; the 2555 is actually somewhat thin on the bottom end as compared to LDCs. The 3412 flatter on top than the 2555, but the response falls aggressively above 10kHz. There’s no “air.” My initial impression is that it would be better suited to a voice/announcement mic than to music.

—
matt.

On Jun 24, 2022, at 10:10, Homero Leal <homero.leal@...> wrote:

?

Agree with Matt... to my ears, 3412 sounds darker, kind?of similar to some K47 style capsules.

Kind regards

HL

El vie, 24 jun 2022 a la(s) 09:35, recordinghacks (matt@...) escribió:

On June 24, 2022 at 6:48:21 AM, thet (parenthetical@...) wrote:
> > How does it differ in sound from the 2555B? Does it have more bass?
> extension?

The 3412 has more bass and/or more proximity than the TSB-2555; the 2555 is actually somewhat thin on the bottom end as compared to LDCs. The 3412 flatter on top than the 2555, but the response falls aggressively above 10kHz. There’s no “air.” My initial impression is that it would be better suited to a voice/announcement mic than to music.?

—
matt.

I have tried it. It does not have a pronounced peak. I actually like the TSB2555B better as an all around go to mic.

On Fri, Jun 24, 2022 at 2:19 AM thet <parenthetical@...> wrote:

has anyone tried the JLI-3412 yet?

If so how does it compare to the 2555B or other well known capsules?

I hadn't noticed that the 3412? was a 34mm capsule -- my mistake - sorry about that.
I hadn't thought about trying one. They are more expensive than the 34mm LDC I'm using at present ( ) which I've found to be pretty good.
Those are certainly less noisy, and have a better overall frequency response than any of the electrets I've tried so far.