R/E/P Community

Please login or register.

Login with username, password and session length
Advanced search  

Pages: 1 [2] 3 4  All   Go Down

Author Topic: Schoeps - "sound" and impedance issues  (Read 32736 times)

Mark Lemaire

  • Full Member
  • ***
  • Offline Offline
  • Posts: 242
Re: Schoeps - "sound" and impedance issues
« Reply #15 on: July 21, 2005, 01:14:41 AM »

Mike-

I agree with you (and others) that in a great acoustic and great players in good balance, a 'flattering' mic is not necessary or warranted, as it is all already there. In many instances, though, the players and hall need all the help they can get!

For instance, if the hall is muddy and/ or the players are using baroque instruments, then the extra 'zing' and clarity of the Neumann M269 is often called for. The DPA 4003 (which I always set up as well) has too neutral a top end here, it's low-end extension is a liability with a passing bus, and the mids only accentuate any lack of clarity in the acoustic. Besides that, the M269 also has the added advantage of a continuously variable pickup pattern. I often need to move away from my default omni setting to some degree or another to shut out even MORE of a muddy hall or gain more focus on players further from the front of stage, all impossible with the omni-only 4003.

However, with modern symphony musicians in modern halls, I often use the 4003 as a main pair as the brighter modern instruments and the drier (often too dry) hall would seem harsh using the Neumanns and are perfect with the (omni) 4003.

The Schoeps, however, were (to my ear) darker than the 4003 in tone and somehow displeasing to my ear. I am happy that other respected engineers find so much enjoyment in them- they are just not for me. For me, my 'neutral' mic of choice is the 4003.

Erik-

"I very much respect your observations about the Schoeps MK 2H and the CMC 6. Of course there is very much difference between the DPA 4003 130V and the Schoeps P48 Colette series. I wonder only how much psychology is involved in how you describe the differences in grey and black colours, since the Schoeps Colette series have Nextel grey housings, and the DPA mikes are matblack."

If you 'respect my observations', please prove that by trusting that I know better than to assume that a grey mic will 'sound' grey or a black mic 'sound' black.


sincerely

Mark Lemaire
Logged
Mark Lemaire

http://www.myspace.com/MarkLemaire

http://www.rubatorecording.com/
Audiophile recording of your music. Anywhere. Anytime.

liuto

  • Newbie
  • *
  • Offline Offline
  • Posts: 29
Re: Schoeps - "sound" and impedance issues
« Reply #16 on: July 21, 2005, 03:50:38 AM »

Mark,
which of the Schoeps omni capsules did you compare to the DPA 4003? There are in total 4 different omnis from Schoeps from linear (MK2) to diffuse field (MK3 +6dB@10kHz) equalized with MK2H (+2dB) and MK2S (+4dB)inbetween. Especially the MK3 ist rather bright sounding (compared to a KM83 which has nominally the same response!). While I think it is more practical to only change grids on a microphone (DPA) than a much more expensive capsule, I don't know if you can generally state Schoeps omnis are darker sounding than the DPA 4003.
Best regards
Hermann Platzer
Logged

Mark Lemaire

  • Full Member
  • ***
  • Offline Offline
  • Posts: 242
Re: Schoeps - "sound" and impedance issues
« Reply #17 on: July 21, 2005, 12:25:16 PM »

Hermann-

In my original post you will read that the mics I auditioned were a pair of MK2H heads with CMC6 amplifiers. Also if you read my earlier, original post you will see that I very carefully did NOT make any such general statement about Schoeps in general (I know they make many mics), but limited my opinion only to the mics I purchased and then returned.

sincerely

Mark L
Logged
Mark Lemaire

http://www.myspace.com/MarkLemaire

http://www.rubatorecording.com/
Audiophile recording of your music. Anywhere. Anytime.

recordista

  • Jr. Member
  • **
  • Offline Offline
  • Posts: 50
Re: That "Schoeps Sound"
« Reply #18 on: July 21, 2005, 03:22:27 PM »

Barry Hufker wrote on Wed, 20 July 2005 05:59


Brighter is attractive because there is a "zing" or excitement.  Take any two microphones, listen to the bright one then listen to the less bright one.  The less bright one will sound dull by comparison.


To some of us the 'bright' ones are just irritating.
Logged
Kurt Albershardt
Murray Hotel
Silver City, NM

Barry Hufker

  • Hero Member
  • *****
  • Offline Offline
  • Posts: 8228
Re: Schoeps - "sound" and impedance issues
« Reply #19 on: July 21, 2005, 03:55:13 PM »

And frankly I think "the bright ones" ought to be.  But then think about what kind of crappy speakers most people buy.

Barry
Logged

Jørn Bonne

  • Full Member
  • ***
  • Offline Offline
  • Posts: 129
Re: Schoeps?
« Reply #20 on: July 22, 2005, 12:56:37 PM »

Mark Lemaire wrote on Sat, 16 July 2005 07:15

Dear LRRec

I bought a pair of MK2H heads with CMC6 amplifiers a few years ago for use as a main pair for classical recordings. My other main pair mics were/ are either a pair of DPA 4003 or Klaus modified Neumann M269s. My impression of the Schoeps? Much like yours. You wrote:

"The sound seemed artificial, with a grainy top end and seemed to have none of the 'magic' that other people have ascribed to these mics."

sincerely

Mark Lemaire





Mark and Steven,

I have been testing Schoeps microphones the last few months in my quest to find a good setup for recording steel string acoustic guitar in the nearfield (about one foot out). CMC6 amps with Mk21, MK41, Mk4, Mk5 and MK8 in different stereo setups.

I found the same "artificial" sound and "grainy top end" you both are referring to, much to my surprise. The sound was very different from the actual sound of the guitar in the room. Guitar used was a Lowden with a big and solid sound overall and very full sounding treble.

Especially the sound from the top strings suffered, they came out sounding thin and unnatural. At first I thought my chain might have something to do with it, but when I heard the Royer demo CD, where Steve Albini has an example of a Martin guitar recorded with Schoeps, I heard that same weak and unnaturel top end in his recording as well.

I think Klaus has a good point when he writes:
"To me ONE very important job a good mic has to succeed in is to translate the musical event I heard with my ears well enough into the electro-acoustic realm that I can again embrace it emotionally.

I firmly believe that our hearing is so complex and refined that no microphone ever can capture what we hear, because the medium, even in its current state of the art, is too primitive".


The lack of "magic" is not about hyped top vs. flat response, but more about the way the mics represent the actual sound of the instrument as heard in the room. The trouble in my application is not that the Schoeps have less treble than some other mics, but that the treble sounds artificial and does not represent the sound of the instrument in an appealing way.

Kind regards

J
Logged

liuto

  • Newbie
  • *
  • Offline Offline
  • Posts: 29
Re: Schoeps - "sound" and impedance issues
« Reply #21 on: July 22, 2005, 01:26:53 PM »

Sorry Mark,
when I read your second posting I had forgotten the first one!
Regards
Hermann Platzer
Logged

Barry Hufker

  • Hero Member
  • *****
  • Offline Offline
  • Posts: 8228
Re: Schoeps - "sound" and impedance issues
« Reply #22 on: July 22, 2005, 05:31:44 PM »

J
Logged

LRRec

  • Newbie
  • *
  • Offline Offline
  • Posts: 18
Re: Schoeps - "sound" and impedance issues
« Reply #23 on: July 22, 2005, 06:52:59 PM »

Barry Hufker wrote on Fri, 22 July 2005 22:31

J
Logged

Barry Hufker

  • Hero Member
  • *****
  • Offline Offline
  • Posts: 8228
Re: Schoeps - "sound" and impedance issues
« Reply #24 on: July 22, 2005, 09:10:11 PM »

Steven,

I don't understand why I've given you whiplash.  I sure hope your insurance covers you for it!

If you read all my postings on this subject (and I don't know why anyone would) then I think you'd find a very clear logic -- it is the notion of obvious personalities versus more subtle personalities in microphones.  It is not limited to frequency response but design philosophy, transient response etc.  How can that not be clear??

With regard to impedance, I thought you and I hashed that out at the beginning.  I said I didn't think there would be any change as long as a low impedance went into a higher one.  Then you stated a reason as to why that may not be so.  So if the question is "does impedance have an effect?" then based on your information alone the answer must be "yes."

Are different preamps going to make a difference due to impedance or some other aspect of design? Sure.

I am sorry if I've been difficult to understand or have somehow appeared to flip-flop.  It's not my fault you can't read my mind!
;>) -- I hate smiley symbols.

Barry
Logged

David Satz

  • Hero Member
  • *****
  • Offline Offline
  • Posts: 661
Re: Schoeps - "sound" and impedance issues
« Reply #25 on: July 22, 2005, 09:32:58 PM »

Steven, I don't know the API preamps, but you describe them as having input transformers with a relatively high turns ratio. This type of input circuit makes good sense for use with low-output dynamic microphones, since you can get as much as 20 dB "free" voltage gain right at the input. But this voltage gain in the input stage is unnecessary with high-output condenser microphones, and in fact can cause some rather severe problems.

The most easily predictable of these problems is input stage overload at high sound pressure levels. This is especially dangerous since most preamps do not have overload indicators that respond to conditions at the input; you can record a live performance and not hear the distortion until it's too late.

Another problem that may be less well known or expected is that the input circuit's high frequency response can deviate several dB from linear when driven by a very different source impedance from what the preamp's design "expects." The problems can range from an unintended rolloff to possibly boosted, peaky response. In extreme cases of peaky response, bursts of parasitic oscillation can even occur on transients.

In many (most?) U.S.-designed preamps that have this type of input circuit, a 150 - 200 Ohm microphone source impedance was assumed. But the Schoeps CMC 6-- amplifier has an output impedance of only 35 Ohms when operated from a 48 Volt supply. So unfortunately, your preamp can't be assumed to work correctly in the top two audible octaves or so, given its design. Maybe it's working properly but maybe it really isn't.

If you have access to a pair of balanced, resistive pads (Shure A15A for example) please try inserting them at the inputs to your preamp. That will reduce the output from the microphones so that input overload is far less likely to occur, and at the same time will raise the driving impedance that the preamp's inputs are "seeing," bringing it into the intended range.

If this causes a noticeable change in the sound of the microphones, then you've got evidence that the preamp is unfortunately not especially suitable for use with modern, transformerless condenser microphones--and not only Schoeps, by the way. And if there is a difference, then the sound that you get with the pads in place should be more representative of what the microphones are actually capable of putting out.

Would you please let us know what you find?

--best regards
Logged

LRRec

  • Newbie
  • *
  • Offline Offline
  • Posts: 18
Re: Schoeps - "sound" and impedance issues
« Reply #26 on: July 23, 2005, 12:23:52 AM »

David Satz wrote on Sat, 23 July 2005 02:32


Steven,

Would you please let us know what you find?

--best regards


David,

As I said in an earlier post, I don't have access to the Schoeps now. I had them on loan for a short time. I am aware of input stage overloading and that was not the case in this instance. If ever I do get the chance I will try your other suggestions.

Sincerely,

LRRec
Logged

Ivo

  • Full Member
  • ***
  • Offline Offline
  • Posts: 169
Re: Schoeps?
« Reply #27 on: July 23, 2005, 02:49:11 AM »

bonne wrote on Fri, 22 July 2005 18:56


Mark and Steven,

I have been testing Schoeps microphones the last few months in my quest to find a good setup for recording steel string acoustic guitar in the nearfield (about one foot out). CMC6 amps with Mk21, MK41, Mk4, Mk5 and MK8 in different stereo setups.

I found the same "artificial" sound and "grainy top end" you both are referring to, much to my surprise. The sound was very different from the actual sound of the guitar in the room. Guitar used was a Lowden with a big and solid sound overall and very full sounding treble.

J
Logged
Ivo

VELVET MASTERING
www.velvetmastering.com

SAVITA MUSIC
www.savita.cz

Jørn Bonne

  • Full Member
  • ***
  • Offline Offline
  • Posts: 129
Re: Schoeps?
« Reply #28 on: July 23, 2005, 12:35:02 PM »

Hi Ivo,

I'm sure very expensive preamps and converters would make a difference.

But if we concentrate on the microphones for a second, I have in the last couple of months recorded with different stereo setups involving microphones from B&K, Brauner, Sennheiser (MKH-series), Royer and others in addition to Schoeps. Spaced, crossed, M/S and Blumlein. Using the same chain in every instance. The Schoeps setups especially were lacking in reproduction of the treble part of the instrument leading to an artificial overall sound, both in relation to the actual sound in the room AND in comparison to the results achieved with the other setups. Davids explanation of the impedance issues related to Schoeps and different preamps may be a part of this picture. Like Steven I have unfortunately returned the Schoeps by now and won't be able to test with the suggested resistive pads at the moment.

I mentioned the Steve Albini sample recording with Schoeps (from the Royer demo) because although he most likely used a different chain than I did, I recognised right away the weak top end of the Martin guitar he was recording. Very similar to what I got using Schoeps on a Lowden. This similarity was clearly evident both on my studio setup and on my living room stereo setup.

Kind regards

J
Logged

Schallfeldnebel

  • Hero Member
  • *****
  • Offline Offline
  • Posts: 816
Re: Schoeps - "sound" and impedance issues
« Reply #29 on: July 23, 2005, 02:00:12 PM »

Earlier I wrote: "I very much respect your observations about the Schoeps MK 2H and the CMC 6. Of course there is very much difference between the DPA 4003 130V and the Schoeps P48 Colette series. I wonder only how much psychology is involved in how you describe the differences in grey and black colours, since the Schoeps Colette series have Nextel grey housings, and the DPA mikes are matblack."


And Mark Lemaire replied:
"If you 'respect my observations', please prove that by trusting that I know better than to assume that a grey mic will 'sound' grey or a black mic 'sound' black."


I worked 24 years ago for the first time with Schoeps, and 20 years ago with B&K. Although I hear clear differences in the bass, I cannot make myself a picture what a greyish or black sound in the bass means. The only remark I can make about the difference in bass between the DPA 4003 and Schoeps CMC - MK2(s), is the Schoeps capsules in general are a bit more colourised in the Great Octave.

About the "hearing in colours", I once described the loss of HF of a converter in stead of dark, as purple, untill I found out later this converter model had a purple stripe on it's front, which I had not noticed before. From that moment I had doubts about my findings. I must have seen the purple stripe, even when I did not remember it. I prefer rather words like dark, dull, bright for the discant, and coloured, thin or fat for the lower octaves instead.

David Satz wrote:"Erik, if I remember correctly you often make organ recordings with pressure (omnidirectional) transducers. You'd be one of the relatively few people to whom the difference in the infrasonic filters between the CMC 5 and the CMC 6 might matter. I'd assume that you would lean toward the CMC 6."

I do not use the CMC6. I may have not been clear, a 12dB per octave highpass filter causes in the high midrange because of phaseshift a different "colour" than a 6 dB per octave highpass filter or no filter at all, and therefore it is also audible on guitar or any other instrument without subsonic tonal information. Therefore I prefer a 6 dB per octave solution like the CMC5, but as far down as possible, 5 hz.

Erik Sikkema

Logged
Bill Mueller:"Only very recently, has the availability of cheap consumer based gear popularized the concept of a rank amateur as an audio engineer. Unfortunately, this has also degraded the reputation of the audio engineer to the lowest level in its history. A sad thing indeed for those of us professionals."
Pages: 1 [2] 3 4  All   Go Up