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3U Audio is designing a switchable sound style condenser microphone, any suggestion?
Old 11th February 2015
  #1
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3U Audio is designing a switchable sound style condenser microphone, any suggestion?

I’m designing a switchable sound style condenser microphone under US$300, named Warbler.

I’d like to use our modified K87 capsule which has a flat top end and around 2dB dip at 7kHz to reduce sibilance. I’m also planning to use vintage Class A circuitry with our GZT-87 output transformer, turns ratio 9.5: 1.

The mic’s features:

Fixed cardioid pattern.

Fully discrete solid-state Class A circuitry with high quality electronic components on signal path.

Low frequency roll-off switchable between flat and 120Hz.

Switchable pre-attenuation: 0 or -10dB.

Selectable sound style: Vocalist 1, 2 and 3.

Vocalist-1 (V1) has an airy sound style for some instruments and vocal.

Vocalist-2 (V2) is similar to the U87 sound style; it’s warmer than V1.

Vocalist-3 (V3) is warmer than V2.

Does anyone have any suggestions/comments?


Thanks

G
Attached Thumbnails
3U Audio is designing a switchable sound style condenser microphone, any suggestion?-warbler.jpg   3U Audio is designing a switchable sound style condenser microphone, any suggestion?-gzt-87.jpg  

Last edited by 3uaudio; 5th April 2015 at 09:55 AM..
Old 22nd February 2015
  #2
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Hand-soldering PCB
Attached Thumbnails
3U Audio is designing a switchable sound style condenser microphone, any suggestion?-w67-pcb-1.jpg   3U Audio is designing a switchable sound style condenser microphone, any suggestion?-w67-pcb-2.jpg  
Old 22nd February 2015
  #3
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Certainly sounds intriguing, but as always it all comes down to how it sounds.
Old 30th March 2015
  #4
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Quote:
Originally Posted by TimS View Post
Certainly sounds intriguing, but as always it all comes down to how it sounds.
Yes. Sound style depends on the capsule, but coloration of sound depends on circuitry and components.

I redesigned capsule and named W1.
Attached Thumbnails
3U Audio is designing a switchable sound style condenser microphone, any suggestion?-w1-600.jpg  
Old 1st April 2015
  #5
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. Sensitivity……-35dB or 18mV/Pa
. Output Impedance……200Ω
. Rated Load Impedance……≥1kΩ
. Low-Cut Filter……Flat and 120Hz
. Pre Attenuation Pad……0dB and -10dB
. Maximum SPL……119/129dB @1kHz, 0.5% THD, 0/-10dB
. S/N Ratio……79dBA (IEC651)
. Equivalent Noise……15dBA (IEC651)
. Dynamic Range……104dBA (IEC651)
. Power Requirement……48V Phantom
. Current……4mA
. Connector……3-Pin Gold-Plated XLR
. Weight……550g
. Diameter……52mm
. Length……210mm
Attached Thumbnails
3U Audio is designing a switchable sound style condenser microphone, any suggestion?-w1-1.jpg   3U Audio is designing a switchable sound style condenser microphone, any suggestion?-w1-2.jpg   3U Audio is designing a switchable sound style condenser microphone, any suggestion?-w1-3.jpg   3U Audio is designing a switchable sound style condenser microphone, any suggestion?-w1-4.jpg   3U Audio is designing a switchable sound style condenser microphone, any suggestion?-w1-5.jpg  

3U Audio is designing a switchable sound style condenser microphone, any suggestion?-w1-6.jpg   3U Audio is designing a switchable sound style condenser microphone, any suggestion?-w1-7.jpg   3U Audio is designing a switchable sound style condenser microphone, any suggestion?-w1-1920.jpg  

Last edited by 3uaudio; 6th April 2015 at 10:39 AM..
Old 5th April 2015
  #6
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Thread Starter
warbler MKII

W2 capsule (U47 warm sound style) which has a smooth top end and around 2dB dip at 7kHz to reduce sibilance, and Class A circuitry with GZT-47 output transformer turns ratio 6.5: 1. Switchable sound style V1, V2 and V3 from warm to warmer

Applications

. Lead/solo vocals, speech, acoustic/electric guitar, acoustic/electric bass, cello, grand/jazz piano, saxophone, brass and drum applications.

Specifications

. Acoustical Principle……34mm Externally Polarized, Pressure Gradient Transducer
. Directional Pattern……Cardioid
. Frequency Range……20 Hz~20 kHz
. Sensitivity……-37dB or 14mV/Pa
. Output Impedance……200Ω
. Rated Load Impedance……≥1kΩ
. Low-Cut Filter……Flat and 120Hz
. Pre Attenuation Pad……0dB and -10dB
. Maximum SPL……126/136dB @1kHz, 0.5% THD, 0/-10dB
. S/N Ratio……79dBA (IEC651)
. Equivalent Noise……15dBA (IEC651)
. Dynamic Range……111dBA (IEC651)
. Power Requirement……48V Phantom
. Current……4mA
. Connector……3-Pin Gold-Plated XLR
. Weight……540g
. Diameter……52mm
. Length……210mm
Attached Thumbnails
3U Audio is designing a switchable sound style condenser microphone, any suggestion?-w2-1.jpg   3U Audio is designing a switchable sound style condenser microphone, any suggestion?-w2-2.jpg   3U Audio is designing a switchable sound style condenser microphone, any suggestion?-w2-3.jpg   3U Audio is designing a switchable sound style condenser microphone, any suggestion?-w2-4.jpg   3U Audio is designing a switchable sound style condenser microphone, any suggestion?-w2-5.jpg  

3U Audio is designing a switchable sound style condenser microphone, any suggestion?-w2-6.jpg   3U Audio is designing a switchable sound style condenser microphone, any suggestion?-w2-7.jpg   3U Audio is designing a switchable sound style condenser microphone, any suggestion?-w2-8.jpg   3U Audio is designing a switchable sound style condenser microphone, any suggestion?-w2-9.jpg   3U Audio is designing a switchable sound style condenser microphone, any suggestion?-w2-10.jpg  


Last edited by 3uaudio; 5th April 2015 at 09:53 AM..
Old 5th April 2015
  #7
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...very interesting...so are you in Australia or China?...I see your mic ships directly from China on eBay...

Last edited by kidvybes; 8th April 2015 at 06:04 AM..
Old 6th April 2015
  #8
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Thread Starter
about 3U Audio Pty and me

Quote:
Originally Posted by kidvybes View Post
...very interesting...so are you in Australia or China?...I see your mic ships directly from China on eBay...
I obtained a Bachelor of Physics, majoring in acoustics, from Nanjing University, China, in 1983. From 1983, I worked as a condenser microphone designer in microphone companies in Beijing and Sydney.

In 2012, I established 3U Audio Pty Ltd in Sydney but the factory is in China. Using professional technology and unique processes, I design and manufacture products which are ultra-reliable, ultra-stable and ultra-consistent.

So some products ship from Australia and some ship directly from the factory in China

Last edited by 3uaudio; 6th April 2015 at 08:04 AM..
Old 7th April 2015
  #9
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Last edited by kidvybes; 7th April 2015 at 07:53 PM..
Old 8th April 2015
  #10
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Interesting..You have any sound samples of this mic and it's variable voicings..?
Old 8th April 2015
  #11
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Thread Starter
Quote:
Originally Posted by Snatchman View Post
Interesting..You have any sound samples of this mic and it's variable voicings..?
Not yet right now.

I have other microphone audio samples such as GZ47fet

https://soundcloud.com/musicentourage/all-dressed-up-marty-worrall
Attached Files

GZ47fet Acoustic Guitar.wav (5.05 MB, 8864 views)

GZ47fet Female Vox.wav (3.41 MB, 8812 views)

GZ47fet Male Vox.wav (1.85 MB, 7739 views)


Last edited by 3uaudio; 8th April 2015 at 03:51 PM..
Old 8th April 2015
  #12
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Thread Starter
GZ67fet audio samples

GZ67fet audio samples
Attached Files

GZ67fet Female Vox.wav (1.70 MB, 7477 views)

GZ67fet Male Vox.wav (2.07 MB, 8792 views)

Old 8th April 2015
  #13
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Thread Starter
GZ67 audio sample

GZ67 is a tube condenser microphone
Attached Files

GZ67 Cardiod.mp3 (865.6 KB, 9356 views)

GZ67 Cardiod.wav (2.78 MB, 8556 views)

Old 8th April 2015
  #14
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Build quality appears very nice...particularly your higher-end FET and tube mic builds on your website (Fairchild FET, Dale resistors, and Wima capacitors)...did I see AMI transformers?...
Attached Thumbnails
3U Audio is designing a switchable sound style condenser microphone, any suggestion?-201312515043770.jpg   3U Audio is designing a switchable sound style condenser microphone, any suggestion?-201312514561427.jpg   3U Audio is designing a switchable sound style condenser microphone, any suggestion?-_57f.jpg   3U Audio is designing a switchable sound style condenser microphone, any suggestion?-2013125145537774.jpg  
Old 12th April 2015
  #15
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Quote:
Originally Posted by kidvybes View Post
Build quality appears very nice...particularly your higher-end FET and tube mic builds on your website (Fairchild FET, Dale resistors, and Wima capacitors)...did I see AMI transformers?...
Fairchild J305, Dale and KOA low noise resistors, WIMA film capacitors, vintage EF86 vacuum tube, AMI or Lundahl transformer
Old 20th April 2015
  #16
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Old 26th April 2015
  #17
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...some relevant info I posted on the other thread yesterday:

Interesting update this morning from the designer of these mics...this "Warbler" series will be expanded to 5 models:
Warbler I (U87 with K67 and 9.5:1 dual-bobbin tranny)
Warbler II (FET 47 with K47 capsule and 6.5:1 dual-bobbin tranny)
Warbler III, IV, & V (C12 variants from C12 thru 251 tonal range, with edge-terminated C12 capsules and 12:1 dual bobbin tranny)

All mics offer 3 voicing settings, that essentially attenuate top-end frequencies...all feature Dale capacitors, WIMA resistors, Fairchild FETs and custom-wound transformers...capsules are produced in-house, no OEM...

The edge-terminated C12-style capsule (of which there will be three distinct tunings offered) looks like this:
Attached Thumbnails
3U Audio is designing a switchable sound style condenser microphone, any suggestion?-c12-1920.jpg  
Old 12th July 2015
  #18
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Old 18th November 2015
  #19
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ARIEL's Avatar
I have to say I am pretty impressed with the sound clips and files posted . The voice selection to tame hi end is a brilliant idea ! I usually like to take out a bit of top end from my mics when mixing .
Old 18th November 2015
  #20
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Quote:
Originally Posted by ARIEL View Post
I have to say I am pretty impressed with the sound clips and files posted . The voice selection to tame hi end is a brilliant idea ! I usually like to take out a bit of top end from my mics when mixing .
...lots more sound clips and 3U Audio product info over here:

Affordable LDC Microphone With Multiple Voicings
Old 14th December 2015
  #21
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3U Audio Warbler I.

I thought I would share some of my sound examples with you guys. After much discussion on the mic I jumped on it as I was searching for a new mic. I was impressed with the build quality and the price so what the heck...I bought one.

This is a demo I am working on. I am a songwriter and we just had this piece of music we just started. It is a song for a girl to sing but we always put scratch vocals regardless of the gender of the final singer. In this case it was me singing. (I am a producer/mixer/songwriter NOT a singer) But it works for demos for final vocals to be cut later. I hear my voice ALL the time so I am familiar with my voice on a variety of mics.

All that to say. I am genuinely impressed by this mic. Sounds worlds better than any mic in this price range I have used. I will say that this price range should actually be $600-$700 because he is offering at a wholesale price with no retail markup on them. The math makes it simple. I have a retail store myself and We mark everything up to at least 200% of the wholesale (twice wholesale). So we really need to be comparing to miss in the $600ish range.

Dropbox link is below. I would love to hear your thoughts (not on the song) on the different voicings of the mic. I did passes back to back one in each voicing setting. V1, V2, V3. Tracked into an audient pre, then lightly into an FMR RNC. Nothing ITB on the voice only sound files.

The context files (ones with the bass and gtr track) have some basic compression, EQ and verb that I would typically use on my voice. Each file has the EXACT same settings. I did not change any of them to suit the voicing option.

Sorry for the bad singing:-)

https://www.dropbox.com/sh/5zjrg9gyu...PL1h9ECea?dl=0
Old 23rd January 2016
  #22
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Thread Starter
GZ47fet V audio samples

Here are GZ47fet V condenser mic audio samples
Attached Files

GZ47fet V Female Vox.wav (3.48 MB, 5709 views)

GZ47fet V Acoustic Guitar.wav (3.40 MB, 5622 views)

Old 23rd January 2016
  #23
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Thread Starter
Please ignore GZ67 tube mic and GZ67fet mic audio samples

Please ignore GZ67 tube mic and GZ67fet mic audio samples. I've changed the designs.
Old 25th January 2016
  #24
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Purely cosmetic critique but you should consider moving away from the etched metal look. Very similar to all the mass produced entry level condenser mics out there. Maybe powder coated with a badge logo would elevate aesthetic for nominal increase in price. I think you lose a lot of sales when it resembles cheap Chinese MXL gear. Good work otherwise.
Old 25th January 2016
  #25
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Quote:
Originally Posted by parametrick View Post
Purely cosmetic critique but you should consider moving away from the etched metal look. Very similar to all the mass produced entry level condenser mics out there. Maybe powder coated with a badge logo would elevate aesthetic for nominal increase in price. I think you lose a lot of sales when it resembles cheap Chinese MXL gear. Good work otherwise.
You may be right. But pop one of the 3U mics open and the similarity to other inexpensive Chinese mics ends abruptly.
The mics do feel like tanks in person, for what it's worth.
Old 25th January 2016
  #26
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I know its superficial, I know they've stolen classic designs, and only since you asked for suggestions.... avoid looking like these in particular


...
Attached Thumbnails
3U Audio is designing a switchable sound style condenser microphone, any suggestion?-maudio.jpg   3U Audio is designing a switchable sound style condenser microphone, any suggestion?-apex.jpg   3U Audio is designing a switchable sound style condenser microphone, any suggestion?-behring.jpg   3U Audio is designing a switchable sound style condenser microphone, any suggestion?-golden.jpg   3U Audio is designing a switchable sound style condenser microphone, any suggestion?-studio-proj.jpg  

3U Audio is designing a switchable sound style condenser microphone, any suggestion?-studio-elec.jpg   3U Audio is designing a switchable sound style condenser microphone, any suggestion?-mxl.jpg   3U Audio is designing a switchable sound style condenser microphone, any suggestion?-stellar.jpg  
Old 25th January 2016
  #27
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...if you're choosing your mics by appearance, good luck to you...and if you're going to tell me you need mics to impress clients, then it's not the mics that are failing you...it's clear the intent by this brand is to focus primarily on circuit-design, component quality, build-integrity and performance at price-points that easily compete or beat the competition, so something needs to take a backseat...IMHO, no better place to cut corners than the metalwork...do you eat the candy-bar or the wrapper?
Old 25th January 2016
  #28
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Quote:
Originally Posted by parametrick View Post
I know its superficial, I know they've stolen classic designs, and only since you asked for suggestions.... avoid looking like these in particular


...
LOL "stolen".

And yes, some huge percentage of microphone metalwork (cheap and expensive) comes out of the same couple spots in China.

I agree the 3U stuff could look cooler and more expensive, but given the choice, I'll take the good circuit/capsule/sonics over the good paint job.

If it were only a negligible jump in cost though, it might be worth it from 3U's perspective as far as attracting buyers who are swayed by the aesthetics and aren't as interested in digging into what's under the hood.

Hell, look at Avantone selling all those (basically) Apex 460s with fancy paint jobs. Seems to be working for them.
Old 26th January 2016
  #29
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Always some scab coming around coercing a product as their own. The guy asked for suggestions and you don't like them? I'm not telling you anything!

Good luck to 3U.

Quote:
Originally Posted by kidvybes View Post
...if you're choosing your mics by appearance, good luck to you...and if you're going to tell me you need mics to impress clients, then it's not the mics that are failing you...it's clear the intent by this brand is to focus primarily on circuit-design, component quality, build-integrity and performance at price-points that easily compete or beat the competition, so something needs to take a backseat...IMHO, no better place to cut corners than the metalwork...do you eat the candy-bar or the wrapper?
Old 26th January 2016
  #30
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Quote:
Originally Posted by parametrick View Post
Always some scab coming around coercing a product as their own. The guy asked for suggestions and you don't like them? I'm not telling you anything!

Good luck to 3U.
...actually, I've owned quite a few that you pictured, and there's nothing wrong with many of them...Studio Projects makes some excellent products, (T3, CS1 & CS5)...the Apex 460 tube mic is the basis for many successful upgraded/modified variants selling for much higher prices...the Behringer B2, the MXL mics outsell most everything else on the landscape and are the "first LDC" acquisitions for many aspiring musicians...

...while your "cosmetic" comment has some merits, it's simply missing the bigger point...just sayin'...
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