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-   -   Measurement mics (http://www.diyaudio.com/forums/multi-way/46619-measurement-mics.html)

bombardon73 27th November 2004 11:15 AM

Measurement mics
 
What mics are good for loudspeaker measurements.

I need one thats not to expensive, e.g. ECM-8000 Behringer.
Also see this link http://www.speaker-online.de/ (messtechnik)

Some say that this one is pretty good and others say it's crap.

any recommendations?

Hertzschmerz 27th November 2004 12:06 PM

With the Behringer you get what you pay for. ;)

I'd recommend to get the Sennheiser KE 4-211-2 capsule (~50 Euro) and build your own. There once was a DIY page for this mic somewhere on the net, but I can't find it anymore.

djQUAN 27th November 2004 12:45 PM

you might be talking about the DIY measurement mic in the ESP pages.

find it in www.sound.au.com

Nappylady 27th November 2004 03:43 PM

The behringer mic is good except for two things:

- it only goes up to ~19.5 khz
- it's NOISY

Other than that, it does an awesome job of capturing the exact sound of its placement; nothing more and nothing less.

audio-kraut 27th November 2004 03:59 PM

Quote:

With the Behringer you get what you pay for.
Have you ever tried it?

I use mine for measuring the various deq's, dcx's and ultracurves for over three years. I don't record with it - so, what's the problem?

bombardon73 27th November 2004 05:19 PM

19.5 khz is more then enough, and noise is not that important with frequencyresponse measurements. If the responce of the mic is flat between 200 and 15000hz it will be ok since measurements below 200 hz will be very inacurate (or you need to measure it openair). Just simulate the bassresponse and take that grafic and add it to the grafic you measured with the mic. This will give a more realistic result.

It's just that I need a tool to see if the crossover points are ok, and if the loudspeakers match with their sensitivities.
I do have some software now, so a nice Mic with a good price/performance ratio would do the trick. That Behringer sounds ok then, right?

zobsky 27th November 2004 05:29 PM

IIRC, .. www.speakerbuilder.net had a cheap diy measurement mic based on a panasonic capsule

bombardon73 27th November 2004 05:45 PM

Hmm, I'm gonna see if I can get my hands on one of those panasonic mic capsules! This looks very promissing.

bombardon73 27th November 2004 05:53 PM

Guys, check out this article. The Behringer seems to be pretty good and so is the panasonic!

http://www.ele.tut.fi/~artoko/audio/...crophones.html

rcavictim 27th November 2004 06:02 PM

I understand that the Behringer ECM8000 needs an external preamp and also phantom power. Does anyone use this mic plugged directly into the mic input of a standard computer soundcard? It is my understandung that there is phantom power voltage onthe mic input for such purcposes on a sound card. I recently obtained an Audigy card for the wide dynamic range and better frequency response it has for my computer testing suite. I'm still trying to get it configured.


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