There are 3 messages in this issue.
Topics in this digest:
1a. Mic elements in parallel
From: gwapuffin
1b. Re: Mic elements in parallel
From: Dan Dugan
1c. Re: Mic elements in parallel
From: vickipowys
Messages
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1a. Mic elements in parallel
Posted by: gwapuffin
Date: Thu Sep 1, 2016 1:06 pm ((PDT))
II am getting conflicting information regarding the use of multiple caps in a
mod SASS DIY microphone.
I have read that wiring two electric caps in parallel would produce about 3db
more noise than a single cap but the signal would increase by 6db which would
give me a better signal to noise ratio. When recording quite nature sounds that
should be desirable.
A second source tells me that the mic’s do not work that way and noted that if
it did everyone would be building mic’s like that. The only mic’s that I see
on the market use one cap per channel so he may be correct.
I would appreciate any feedback from those trained in electronics or that have
made tests to verify these configurations.
Cross post to Mic builders
Gerald White
Messages in this topic (3)
________________________________________________________________________
1b. Re: Mic elements in parallel
Posted by: "Dan Dugan" dandugan_1999
Date: Thu Sep 1, 2016 9:35 pm ((PDT))
Multiple caps can work like that, the Telinga Clip-On is an example. I don’t
know how they’re wired, however.
-Dan
> On Sep 1, 2016, at 1:06 PM, [naturerecordists]
> <> wrote:
> II am getting conflicting information regarding the use of multiple caps in a
> mod SASS DIY microphone.
>
> I have read that wiring two electric caps in parallel would produce about 3db
> more noise than a single cap but the signal would increase by 6db which would
> give me a better signal to noise ratio. When recording quite nature sounds
> that should be desirable.
>
> A second source tells me that the mic’s do not work that way and noted that
> if it did everyone would be building mic’s like that. The only mic’s that I
> see on the market use one cap per channel so he may be correct.
>
> I would appreciate any feedback from those trained in electronics or that
> have made tests to verify these configurations.
>
> Cross post to Mic builders
>
> Gerald White
Messages in this topic (3)
________________________________________________________________________
1c. Re: Mic elements in parallel
Posted by: "vickipowys" vpowys
Date: Thu Sep 1, 2016 10:35 pm ((PDT))
Klas at Telinga pointed out that only some recorders can supply enough
power for 4 electret capsules. I know that the Olympus LS10 - 11, and
Sony M10 will work. Klas has tested many recorders for powering 4
electrets, but I don't recall all the results
I have compared set ups using 2 electrets, and 4 electrets, to an
LS10. 4 electrets gave a 3 db stronger signal.
Vicki
On 02/09/2016, at 7:55 AM, Dan Dugan
[naturerecordists] wrote:
> Multiple caps can work like that, the Telinga Clip-On is an example.
> I don�t know how they�re wired, however.
>
> -Dan
>
>> On Sep 1, 2016, at 1:06 PM, [naturerecordists]
>> <
>> > wrote:
>
>> II am getting conflicting information regarding the use of multiple
>> caps in a mod SASS DIY microphone.
>>
>> I have read that wiring two electric caps in parallel would produce
>> about 3db more noise than a single cap but the signal would
>> increase by 6db which would give me a better signal to noise ratio.
>> When recording quite nature sounds that should be desirable.
>>
>> A second source tells me that the mic�s do not work that way and
>> noted that if it did everyone would be building mic�s like that.
>> The only mic�s that I see on the market use one cap per channel so
>> he may be correct.
>>
>> I would appreciate any feedback from those trained in electronics
>> or that have made tests to verify these configurations.
>>
>> Cross post to Mic builders
>>
>> Gerald White
>
Messages in this topic (3)
"While a picture is worth a thousand words, a
sound is worth a thousand pictures." R. Murray Schafer via Bernie Krause.
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