Re: Blue Baby Bottle SL mic thoughts
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Blue Baby Bottle SL mic thoughts
Hi everyone,
I can't believe I got this off eBay for only $73. The guy that sold it knew nothing and never tested it. The switches are missing but I can use a screwdriver. I was the highest bidder! I took a chance that it would work. It does! 100% looks almost brand new. No pop filter or shock mount. I found a pop filter non-branded version that looks the samenfor $10. I have a shock mount already no need to get one of those. The mic IMO sounds amazing! I contacted blue microphone company and they said they don't sell switches or replacement parts. I was actually surprised.?
Anyone know where I can replacement switches? I looked everywhere.?
I was looking up specs and to my surprise the old original version had a self noise of 5.5 dB. The SL version has a self noise of 10.8 dB. How did this happen? Because of the switches? Is there extra ways to reduce noise down on the mic? I know I may be going a little bit extreme when it comes to self noise. But I want as low self noise as possible!
Thanks,
Jesse
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Re: Building a brand new microphone from scratch help
Hey Jesse, I have built four of those exact mics and they are really good. Finding donor bodies is the real challenge. I was (and still am a bit) using the "U87" clone bodies from AliExpress. Like BM800 bodies, I feel like every time?I order I get a slight variation. At a minimum I have learned that owning?a M2.5 tap?? really helps. Plus an assortment of small metric screws as well!?
For the 5 pin? this will get you 4 of them?
You have to disassemble it. but it is the cheapest route.??
I'll be recording a 16 person classical ensemble in Fort Worth with these in a few weeks. Im working?on permission?to post it. At a minimum I can post 15-30 second snippet. Im going?to use these mics as spot mics on the bassist. It is a piece specifically?written for that.?
On Sat, May 28, 2022 at 12:37 AM Jesse Hudson via <jessehudson68= [email protected]> wrote: HI again,
So after doing a lot of reading this is what I came up with. I believe this is everything I need as far as the microphone is concern? I still need a donor mic and a 5 pin connect and if anyone knows something cheaper or better than the bm-800 shell? I want to make the dual out microphone. I am choosing the k12 version unless someone can recomend the k47? I want as neutrual as possible as well as low noise. I can do some soldering but I can't say I am the best. Having a chip board complete, I am less likely to mess something up. The next build, I will take all the parts and solder each component on the board. That will be my next challenge after this.?
Does anyone know the weighted dba for the circuit / capsule together? I read on the link?True Condenser OPA Mics : 6 Steps (with Pictures) - Instructables that the mic builds are about 8dba to 9 dba of self noise. However I am not sure if that was with the premade circuits or with soldering each component myself.?
Thanks Again everyone for your help,
Jesse
-- Best Regards,
Jules Ryckebusch
214 399 0931
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Re: Building a brand new microphone from scratch help
HI again,
So after doing a lot of reading this is what I came up with. I believe this is everything I need as far as the microphone is concern? I still need a donor mic and a 5 pin connect and if anyone knows something cheaper or better than the bm-800 shell? I want to make the dual out microphone. I am choosing the k12 version unless someone can recomend the k47? I want as neutrual as possible as well as low noise. I can do some soldering but I can't say I am the best. Having a chip board complete, I am less likely to mess something up. The next build, I will take all the parts and solder each component on the board. That will be my next challenge after this.?
Does anyone know the weighted dba for the circuit / capsule together? I read on the link?True Condenser OPA Mics : 6 Steps (with Pictures) - Instructables that the mic builds are about 8dba to 9 dba of self noise. However I am not sure if that was with the premade circuits or with soldering each component myself.?
Thanks Again everyone for your help,
Jesse
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Re: Dual capsule k12 on one side and k47 on other side idea
"The rear side of every Braunmuhl-Weber style (dual diaphragm, large diameter) capsule, including the K47 and CK12 styles, is part of the sound of the front side. If you were to change the rear side of the CK-12 to anything else, the front wouldn¡¯t sound like a CK-12 any more. The same applies to the K47. "
One of the consequences would be that the patterns that combine both capsules would not behave as expected, with lobes happenning where the capsules have different response. I'm not sure of the severity of the consequences, but it needs to be considered.
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Re: Recommended operating voltage for TSB 2555
Some great info! I didn't realize that these capsules are fetless and thus don't need the polarization like I was using on the EM272s. I don't have any OPA164x opamps on hand. How would I modify a schoeps circuit to work with the capsules? Also probably a silly question, but like the em272's can these TSB2555's be placed in parallel to improve the SNR?
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Re: Recommended operating voltage for TSB 2555
I¡¯m working to have Micboosters in the UK carry them but ut us work in progress. They do have the TSB2555 capsules? Best Regards,
Jules Ryckebusch?
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On May 27, 2022, at 19:26, a45porhora@... wrote:
? Hi Jules
Did you know any easy way/alternative to buy from JLI electronics in Europe and not being "killed" by a massive "customs fee" after also paying a big Shipping cost?
Thanks!
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Re: Recommended operating voltage for TSB 2555
Hi Jules
Did you know any easy way/alternative to buy from JLI electronics in Europe and not being "killed" by a massive "customs fee" after also paying a big Shipping cost?
Thanks!
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Re: Recommended operating voltage for TSB 2555
Gavin, yea you can. I did it here:? Best Regards,
Jules Ryckebusch?
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On May 27, 2022, at 17:55, Gavin Stokes <stokestack@...> wrote:
? Hey guys, I happen to have three of those 2555 capsules sitting on my desk, and a mid/side project sounds interesting. Can you save space by using the dual-channel Alice:?
On Fri, May 27, 2022 at 5:33 AM Jules Ryckebusch < ryckebusch@...> wrote: Great?stuff mentioned?so far here. This one caused me a lot of concertation initially?as well. There is no internal FET so a lot of the data sheet looks like "copy and paste" maybe it is a great?little capsule and if you want to use my OPA circuit from the instructable already posted you can find it here:?
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Re: Recommended operating voltage for TSB 2555
Hey guys, I happen to have three of those 2555 capsules sitting on my desk, and a mid/side project sounds interesting. Can you save space by using the dual-channel Alice:?
On Fri, May 27, 2022 at 5:33 AM Jules Ryckebusch < ryckebusch@...> wrote: Great?stuff mentioned?so far here. This one caused me a lot of concertation initially?as well. There is no internal FET so a lot of the data sheet looks like "copy and paste" maybe it is a great?little capsule and if you want to use my OPA circuit from the instructable already posted you can find it here:?
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Re: Dual capsule k12 on one side and k47 on other side idea
Matt, BTW are you the maker of the recordinghacks website? I use that website for every single mic look up! Its full over very useful info!
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Re: Dual capsule k12 on one side and k47 on other side idea
Thank you Matt! This means a lot to me. This makes a lot of since as well. As I journey down the road of mics, I am finding out a bunch of new stuff! I been doing a lot of research of parts and such to build myself my own mic. Having 2 different mics would be the best option.
Best Regards,
Jesse
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Re: Dual capsule k12 on one side and k47 on other side idea
Anyways I thought about it and wonder if anyone made a capsule that is dual but has a center
terminated "k47" on one side and the other have an edge terminated "k12" on the other side? The rear side of every Braunmuhl-Weber style (dual diaphragm, large diameter) capsule, including the K47 and CK12 styles, is part of the sound of the front side. If you were to change the rear side of the CK-12 to anything else, the front wouldn¡¯t sound like a CK-12 any more. The same applies to the K47.? As a practical matter, the K47 has a single backplate, so there¡¯s no "rear half" that could be removed and combined with something else. And of course the true CK-12 has a tunable inner backplate piece that sets the two chamber volumes. There is more to the sound of these than just the termination style.? That¡¯s not to say someone couldn¡¯t engineer a mic with two distinctly voiced sides, of course.? MXL had a mic that was promoted as a ¡°dual voice¡± design. It had a front/rear switch and an LED that indicated which side was active. The capsule was a 32mm K67, IIRC, with 6-micron film on one side and 8-micron on the other. I assume they were tuned differently. In my testing, the side described as ¡°warm¡± had an exaggerated 12kHz bump, +5.5dB, while the ¡°bright¡± side peaked at +6dB around 10kHz. Find notes on that here:? With in-circuit EQ, it¡¯s possible that mic would have been smoother and more usable, although I¡¯m not sure the two sides would have sounded different enough (after EQ) to justify the cost of the switch, LED, and the special capsule.? The alternative is to have two mics that were both purpose-built to sound like whatever distinct sounds you¡¯d want. Hang them side by side, record both simultaneously, and then choose later which track to use. Yeah, that might cost more than one mic that does everything, but the benefit is that you only need one great performance, not two. ¡ª matt.
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Dual capsule k12 on one side and k47 on other side idea
Hi everyone,
I love the sonic differences in both capsules the k12 and k47. To me the k12 lows just seem fuller but the k47 has better highs. This is just from my experience of putting k12 capsule in a studio projects b3 and a k47 in another studio projects b3 mic.
Anyways I thought about it and wonder if anyone made a capsule that is dual but has a center terminated "k47" on one side and the other have an edge terminated "k12" on the other side? Sorry if I am getting terms incorrect.
The reason for this idea is that I love the sound of both. I would be able use the k47 on one side and then turn it around and use the k12 on another. I was thinking of having a switch that I can flip to change the capsule out or I can use a dual board with a 5 pin cable and a 2 way 3 pin spltter.
Any ideas on this? Could I take a dual capsule appart and then put a different piece in? Has anyone did this??
Thanks,
Jesse
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Re: Building a brand new microphone from scratch help
I read over everything! YES This is what I was looking for. Thanks to all the hard work being put into this! Looks like I can buy a completed board set from here according to the website Mic Scharf??
I never really thought about making a 5 pin out and then blending the 2 channels together to make different polar patterns! I will be looking info getting a ck12 capsule though.
Best Regards,
Jesse
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Re: Recommended operating voltage for TSB 2555
22nF I know?they are big you could go down to 10nF but at 22nF with the output impedance of the OPA board you are 3dB down at about 150Khz. This makes it bullet proof. I have had no issues and build dozens of these.
I have a question regarding the EMI/RF suppression caps. On this page:??the value is .22nF (220pF) and here 22nF. That is a big difference, what is right?.
-- Best Regards,
Jules Ryckebusch
214 399 0931
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Re: Recommended operating voltage for TSB 2555
I have a question regarding the EMI/RF suppression caps. On this page:??the value is .22nF (220pF) and here 22nF. That is a big difference, what is right?.
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Re: Building a brand new microphone from scratch help
Thank you Mic Scharf!
I will work on reading through the info!
Best Regards,
Jesse
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Re: Recommended operating voltage for TSB 2555
Great?stuff mentioned?so far here. This one caused me a lot of concertation initially?as well. There is no internal FET so a lot of the data sheet looks like "copy and paste" maybe it is a great?little capsule and if you want to use my OPA circuit from the instructable already posted you can find it here:?
Then you have minor soldering to do and will get a great mic. The capsule noise will be dominant and it will get you a more headroom than a schoeps circuit (although not drastically).
Jules
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On Fri, May 27, 2022 at 4:36 AM Arjay 1949 < info@...> wrote: Sadly, the 2555 data sheet you link to is mostly nonsense.? This capsule is a FETless electret, and the data sheet has details of the characteristics of the impedance converter shown in the schematic -- which doesn't exist within this capsule??
(The 2555 capsule only contains the part shown within the dotted line box on the schematic)
So, although you don't need a polarising voltage - as recordinghacks has already indicated - you will need an impedance converter.? That can be a Schoeps style FET interface, or perhaps an op amp impedance converter?
Mic Scharf has already linked to my Mid/side project . The FETless version of that project? shows how you might interface a capsule like the 2555, in it simplest form.
And it will be the capsule noise itself which dominates with that circuit.
On Fri, May 27, 2022 at 05:33 AM, <blair.r.conner@...> wrote:
Hello!
Back in the mic making game and working on a Mid-Side setup! Anyways, I bought several TSB2555 capsules and looking at the datasheet it says the operating voltage is 1-10V (). Seems like a big range...any recommendations of what voltage to get the lowest self noise and highest SPL? Lowest noise matters most to me. Also can the TSB2555 be used in a Schoeps style circuit? I assume so but would like to verify.?
Thanks!
Best regards,
Blair
-- Best Regards,
Jules Ryckebusch
214 399 0931
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Re: Recommended operating voltage for TSB 2555
Sadly, the 2555 data sheet you link to is mostly nonsense.? This capsule is a FETless electret, and the data sheet has details of the characteristics of the impedance converter shown in the schematic -- which doesn't exist within this capsule??
(The 2555 capsule only contains the part shown within the dotted line box on the schematic)
So, although you don't need a polarising voltage - as recordinghacks has already indicated - you will need an impedance converter.? That can be a Schoeps style FET interface, or perhaps an op amp impedance converter?
Mic Scharf has already linked to my Mid/side project . The FETless version of that project? shows how you might interface a capsule like the 2555, in it simplest form.
And it will be the capsule noise itself which dominates with that circuit.
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On Fri, May 27, 2022 at 05:33 AM, <blair.r.conner@...> wrote:
Hello!
Back in the mic making game and working on a Mid-Side setup! Anyways, I bought several TSB2555 capsules and looking at the datasheet it says the operating voltage is 1-10V (). Seems like a big range...any recommendations of what voltage to get the lowest self noise and highest SPL? Lowest noise matters most to me. Also can the TSB2555 be used in a Schoeps style circuit? I assume so but would like to verify.?
Thanks!
Best regards,
Blair
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Sey
underwood