Quote from: TNJazz on July 24, 2008, 07:03:17 PM
Quote from: illconditioned on July 24, 2008, 05:23:38 PM
OK, I *love* the sound of the Nevaton, but watch out for quality control. Two pairs purchased, one died, the other not matched at all!!!
Nevaton did not start supplying matched pairs to the US distributor until I requested they do so. As far as I know, I am the only one who actually sells "matched" pairs at the moment though.
All Nevaton come with a 2 year warranty, so you should be able to exchange your dead mic for a new one Richard.
By the way, did anyone listen to my Countryman samples? I really like these.
Oh yeah: here is a quick tip for matching test. Listen up folks. First, generate "pink" noise (I used the open source program Audacity, available on Windows, Mac and Linux). Then play back at a moderate level, eg., 80dBA. Hold the mics side-by-side (as close as you can get them, like 1/2" apart max) about 6 to 12" in front of the speaker, and record the noise. Then analyse the spectrum. I use the "Waves" plugin called "Analyzer" running in Wavelab. I set the levels to RMS and response to "slow". The curves are all over the place, but the mics should track each other.
Here are some curves.
First, a set of Countryman B3 mics that *do not* match:

Now a set of mics (Sennheiser KE4) that *do* match:

It is not showing absolute level well (you need an anechoic chamber and calibrated measurement apparatus to do that

), but the relative level will tell you if the mics are OK. Note that it is unlikely that both mics will fail in the same way, so if they are equal, they are probably both matched and working!
Richard