DAD AX32 on the road

Hi,

in early june I recorded choir Aspis’s last session with DAD AX32.

Thanks to Audinate Dante Virtual Soundcard I used it like a soundcard with my MacBook.

Session was in S. Pietro auditorium in Milan which it’s charaterized by a very dry sound.

I used two AKG C414 TL-II to ORTF stereo array and four Schoeps CMC6 MK4 as spots on sections.

Choir Aspis's session

Choir Aspis’s session

As I checked in my tests (part 1part 2) DAD AX32 has an amazing sound!

I used DAD AX32’s premicrophones which have a very pristine sound with a wide dynamic range. They sound very close to my Millenia Media HV-3R.

Record will be released in September.

Cheers,

Lorenzo

 

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Schoeps V4 U

Recently I had the pleasure to try Schoeps V4 U a new studio vocal microphone.

It’s a very interesting gear, lightly and small with several original technical solutions.

Shoeps V4 U

Shoeps V4 U in his wooden case

Available in grey and blue color Schoeps V4 U is a FET microphone trasformerless and free of coupling capacitors with a newly designed electronics which offer a very high maximum sound pressure level (144 dBspl).

Characteristic of this microphone is the beveled collar on the 33mm capsule which cause directivity to increase steadly and smootly at high frequencies, as in a large-diaphragm microphone.

Schoeps V4 U capsule head

Schoeps V4 U capsule head (source Schoeps website)

The classic look of the V4 U is based on the CM 51/3. This microphone was manufactured from Schoeps from 1951-1953.

The V4 U is available in two sets: The “V4 SGV set” contains the microphone, a wooden case and the SGV stand clamp, the “V4 USM set” differs from the other one for the elastic suspension USM-V4 (Rycote made).


The test

I tested it with a female singer tracking, my speech and a test signal coupled with SpectraFoo Complete spectral analyzer and I used my Neumann U87ai as reference to check V4 U nuances.

I made a cluster of three microphones to compare the different sounds on the same source, all microphones were plu into a Millenia HV-3C and a DAD AX32 AD/DA converter chained with my DAW Logic Pro by Dante ethernet protocol.

Three microphones cluster

Three microphones cluster

The test was carried out in three steps comparative:

1)  Spectral responses and output level (I fixed a reference gain) of all microphones with SpectraFoo complete.

2) Comparison between Neumann U87ai (worldwide vocal reference) and Schoeps V4 U to check on a female singer and male speaker differences.

3) Comparison between Schoeps Colette MK4 and Schoeps V4 U to check differences for at first glance similar capsules.

 

Spectral response

The spectral responses of microphones are showed bottom, the first graph is about the output level where U87ai is the reference.

After I overlapped spectral response of Schoeps CMC6@MK4 on Schoeps V4 U and I checked a better performance on low end by V4 U and a identical response on mid and high frequencies.

Neumann U87ai and Schoeps V4 U comparison was very interesting, because on mid and high frequencies V4 U has a flat and extended response while on low end it’s intermediate between the other two microphones.

Tracking

Ok, after technical stuff I explain vocal tracking of  a female singer and a male speaker (myself).

All three microphones are amazing and professional gears, simply my opinion is about what I found ready to use”.

Neumann U87ai highlighted a slightly muddy sound on low end and a nastily mid-high frequency (about 3kHz); Schoeps CMC6@MK4 was smoothed on mid-high frequencies without harsh but with a lacking low end.

Schoeps V4 U captured a focused, depth and natural sound with a warm low end and it kept the same smoothed and extended high end of CMC6@MK4. Transient response was very fast.

 

Conclusions

Schoeps V4 U is a goal, it’s a very interesting alternative to vocal studio standard microphones (like Neumann, AKG, Brauner and others). It natural sound with a warm low end and a flat extended response is a powerful tool to capture vocal and acoustic instruments.

The lack of alternatives polar responses, filters and pads are a limitation for the multipurpose applications but it’s a tipical Schoeps phylosophy to maximize microphones perfomance.

 

Cheers,

Lorenzo

 


Disclaimer: I tested this gear with care, nevertheless this test is inevitably affected by my opinion and possible analyzer gear and software imprecisions.


Copyright © 2013-2014 by iuatwest. All rights Reserved.
This material has been copyrighted,  feel free to share it with others; it can be distributed via social media or pingbacks or added to websites; please do not change the original content and, provide appropriate credit by including the author’s name @ http://iuatwest.com and your readers shall not be charged by you under any circumstance.

Schoeps V4 U presentation at our studio

Hi,

last tuesday june 03, 2014 Te.De.S. (Schoeps, Millenia, DAD and others brands importer) presented Schoeps V4 U, studio vocal microphone at our studio. The participants were many and the event was very positive feedback.

Shoeps V4 U presentation

Shoeps V4 U presentation

I contributed with them to prepare a session to compare it with Neumann U87ai (worldwide vocal microphone reference) and Schoeps Colette series CMC6 MK4 (classic Shoeps small diaphragm).

Schoeps V4 U capsule has a new small-diaphragm capsule architecture, with bevelled collar for controlling the polar response.

Shoeps V4 U capsule

Shoeps V4 U capsule

The look of the V4 U is based on the Schoeps CM51/3 from 1951, finished in a elegant blue or grey color. They are available two kind of suspension: SGV stand clamp and USM-V4 elastic suspension (by Rycote).

I recorded a female singer with all microphones together with the same preamplifier Millenia HV-3R and converter DAD AX32 and after I compared each response.

Three microphones cluster

Three microphones cluster

Schoeps V4 U showed a smoothed response with an openness high frequency and a solid low end with a very natural image.

All participants liked it!

I’ll post a Schoeps V4 U test soon.

Bye,

Lorenzo

 

 

DAD AX32: test in progress in my studio – part Two

Ok,

after first approach based on comparison listen (see DAD AX32: test in progress in my studio – part One), I verified frequency and phase response with Metric Halo SpectraFooCompleteX.

All settings are controlled by DADman software (see figures bottom) like matrix or Mic/line switch. When you change Mic gain or Line out level you can hear the relay click on.

All audio connections use DB25 with Tascam pin-out.

In front AX32 has four buttons to change sample frequency and clock master, a little screen to check settings and a double series of sixteen leds to visualize carrier (digital signal) and audio presence.

Here DAD AX32, it look very nice 🙂


After I installed Dante controller and  Dante virtual sound card both by Audinate and I created an audio network where my computer (with audio application) and DAD AX32 are two clients.

Dante virtual soundcard has to work necessarly without a Dante PCI card compatible. It uses ethernet in your computer gateway. With Dante controller you can manage a flush of 64×64 channels audio at 48kHz@24bit or 32×32 channels audio at 96kHz@24bit with 1Gbit of bandwidth. You find all specific here.

I created a multicast and I managed audio interchange to and from AX32 with virtual routing.

Well, I opened SpectraFoo and I changed soundcard with Dante (it appears on available audio cards) and I ran signal generator with pink noise to test AX32.

I used Transfer Function window to visualize the difference between original signal (reference) and it after AX32 AD/DA (response). In this window it’s possible to visualize Power vs Frequency and Power vs Phase.

I tested AX32 at 96kHz and 48kHz.

At 96kHz I checked a bandwidth very width (8Hz to 43kHz) with an excellent phase response.

Also at 48kHz I checked a bandwidth very width (8Hz to 22kHz) although with a slight drift phase response at high end.

Also I tested Ax32 with FuzzMeasure, an audio and acoustical measurement application, and it confirmed SpectraFoo audio bandwidth analisys.

Here all SpectraFoo graphics:

My conclusions on the DAD AX32 is that it’s the best converter I’ve ever heard. It’s very valuable into mix and fundamental into mastering because very wide bandwidth with clean mid frequency and extended low and high frequency are a necessarly conditions to work fine.

Have a nice day,

Lorenzo


Disclaimer: I tested this gear with care, nevertheless this test is inevitably affected by my opinion and possible analyzer gear and software imprecisions.


Copyright © 2013-2014 by iuatwest. All rights Reserved.
This material has been copyrighted, feel free to share it with others; it can be distributed via social media or pingbacks or added to websites; please do not change the original content and, provide appropriate credit by including the author’s name @ http://iuatwest.com and your readers shall not be charged by you under any circumstance.