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PenaL PenaL is offline
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Default Tube-microphone SE Z 5600 A background noise...?

I bought SE Z 5600 A Tube-microphone some years ago. It's sound quality
itself is very pretty, a little old-fashioned, such a sharp, but more
warm, as like the large-capsel tube-microphones can be. Especially for
the low-price like SE:s are.

problem is the background-noise. Is it possible, that the such a strong
"hissing" comes from the double-triode? In this microphone, there's no
other active-components at all - only capacitors, resistors and so on.

The double-triode -type is ECC 83A, maybe made in China, manufacture is
SE Electronics, who will really know, who and where this is really made...

Do any of you have got some experience to get lower background-noise
only to change this ECC 83 double-triode to the tube made from another
manufacturer? There exist some other one, but which trade marks could be
less noisy?

Thanks for the answers

-Pentti
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Scott Dorsey Scott Dorsey is offline
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Default Tube-microphone SE Z 5600 A background noise...?

PenaL wrote:
I bought SE Z 5600 A Tube-microphone some years ago. It's sound quality
itself is very pretty, a little old-fashioned, such a sharp, but more
warm, as like the large-capsel tube-microphones can be. Especially for
the low-price like SE:s are.


I'd say the sharpness was the most distinct part.

problem is the background-noise. Is it possible, that the such a strong
"hissing" comes from the double-triode? In this microphone, there's no
other active-components at all - only capacitors, resistors and so on.


A lot of it is probably from the tube, which really isn't a very good
design choice for that application anyway. Some of it is thermal noise
from resistors. It's as much a design problem as an implementation problem
though.


The double-triode -type is ECC 83A, maybe made in China, manufacture is
SE Electronics, who will really know, who and where this is really made...


It's a Shugang tube.

Do any of you have got some experience to get lower background-noise
only to change this ECC 83 double-triode to the tube made from another
manufacturer? There exist some other one, but which trade marks could be
less noisy?


You can purchase tubes that have been hand-selected for low noise, or you
can buy a box of 20 tubes and select one yourself out of the set.

I would suggest trying whatever your local shop has available, although
I am personally very partial to the JJ brand tubes, which are clean and
quiet and available in the $5-$10 range.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."
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