From: umashankar <>
>
> i have not heard the 418, but have looked at the
> specs, and i think sennheiser came up with a clever
> solution to the side signal.
>
> the side mic does not have the specs of the mid mic
> because it does not have to. i saw the math somewhere,
> but when the m in the ms mic is a shotgun, you need a
> very small contribution from the s mic before the
> image breaks up. and when you need a small signal
> (compared to the m signal) its noise figure can easily
> be much worse without effecting the over all decoded
> left right output.have i got that right?
In the case of my MS MKH-60/30, no, that's not right. A mix up to 50:50
side to mid still gives a good field depending on the circumstances. I
more typically use 60:40 giving the mid a slight increase in emphasis,
but not very significant as far as self noise. Sometimes even a slightly
greater side contribution works. So, the self noise and sound quality of
the side should be as good as the mid.
I don't do math on it, I get out in the field and find out what works.
Then let the math try and catch up. To be fair, maybe they were talking
about studio use, where such a rule might work, though I doubt it.
A MKH-30 limits the sound quality I can get in my MS, and the MKH-418S
uses a side that's much worse than that. I see no reason to be so
limiting. Their side does not even come up to par with their mid or to a
MKH-416. So it's a poor match.
Walt
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