Walt and All,
I tried closing the back 4 rows of the ME64 cardioid mic (just by gripping
the mic in my hand), to see if it would respond more like an omni mic. I
used a transistor radio as the sound source, and listened through
headphones. For a front on comparison of blocked and unblocked, there
seemed to be a higher frequency boost when blocked. For a side-on
comparison, the blocked off version had somewhat more sensitivity than the
unblocked version, but nothing like as clear as front on. So there must be
something else happening in the ME 62. I wonder what?
Vicki Powys
Australia
> on 9/2/02 12:00 PM, Walter Knapp at wrote:
> A omni should sound loud and clear from all sides.
>
> Sennheiser has pdf's of the specs and so on for the mics on their site.
> Looking at those, you want to close the back 4 rows of slots. With tape
> that's pretty soundproof.
>
> Those back holes probably let in sound that kills the sound from the
> back by phase interference.
>
> The same pdf's include the polar patterns for the two mics.
>
> You might also try orienting your mics vertical in a spaced
> configuration. Looking at the polar pattern, this would result in a
> sensitivity penalty at ground level, but that would be the same all
> around. You would also hurt your high frequency response by a fair
> amount. But you should then get sound from all around like a omni does.
>
> Walt
>
>
> Vicki Powys wrote:
>
>> I sure do relate to "low end - good quality", Rich! I tried your conversion
>> trick, to turn a ME 64 cardioid into a ME 62 omni. Sennheiser will be very
>> pleased to know that it didn't work!! What a disappointment!
>>
>> As I understand it, an omni mic should sound as loud and clear from both
>> front and sides, (if for example, you were speaking into it.) Is that how
>> your ME 62 responds Rich? I tried many combinations of blocking various
>> vents on the ME 64, but I always had a cardioid effect, i.e. loud and clear
>> at the front, but much less at the side.
>>
>> I will look at Sennheiser's website for more clues.
>
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