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Old 12th September 2009, 06:56 AM   #1
Tech is offline Tech  United States
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Default What's the scoop with electret condenser specs?

When it comes to electret condeser mics, I notice that the prebuilts all seem to have great dynamic range, low self noise, excellent frequency range, etc.

But when I find the capsules separately, the specs all seem to be very mediocre in comparison. Even the Panasonic electret capsules don't seem so hot in comparison.

So what's the deal with this, are the pre-builts using better capsules than i'm finding?

Or is this a numbers game like "peak" wattage on an amp...
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Old 13th September 2009, 05:59 PM   #2
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No one has any idea here?
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Old 16th September 2009, 05:49 AM   #3
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Quote:
Originally Posted by Tech View Post
When it comes to electret condeser mics, I notice that the prebuilts all seem to have great dynamic range, low self noise, excellent frequency range, etc.

But when I find the capsules separately, the specs all seem to be very mediocre in comparison. Even the Panasonic electret capsules don't seem so hot in comparison.

So what's the deal with this, are the pre-builts using better capsules than i'm finding?

Or is this a numbers game like "peak" wattage on an amp...
Sir,
To compare one MIC is good or bad. Do not just see the brand.
I know your mean 'hot' is the sound not very big yes?
You know if you want to have a more bigger voice of the MIC you have to choose the MIC with higher sensitivity.

So the ECM just have more sutiabler ,do not have best.
if the sensitivity of the MIC just about -44dB or -46dB the voice is much lower than -34 and -36dB.

But if you choose the sensitivity much more that your need ,the MIC would have 'NOISE'.

As details please check our website www.lxmic.com

B.Regards
Gary
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Old 16th September 2009, 07:07 AM   #4
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Gary, thank you for the response.

I'm looking at your site now.
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Old 16th September 2009, 11:53 AM   #5
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The capsules all seem to have a fet built in, whereas - at least the Sony complete mics I have - all use a separate fet. It may be the quality of the fet.

At one time I chopped the fets out of some ECM capsules to try them in a MC-phono amp; they were not very good - quite noisy.
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Old 16th September 2009, 07:31 PM   #6
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Quote:
Originally Posted by Steerpike View Post
The capsules all seem to have a fet built in, whereas - at least the Sony complete mics I have - all use a separate fet. It may be the quality of the fet.

At one time I chopped the fets out of some ECM capsules to try them in a MC-phono amp; they were not very good - quite noisy.
So then what you see is probably what you get when it comes to the specs?
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Old 16th September 2009, 07:35 PM   #7
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Quote:
Originally Posted by Garyepe View Post
Sir,
To compare one MIC is good or bad. Do not just see the brand.
I know your mean 'hot' is the sound not very big yes?
You know if you want to have a more bigger voice of the MIC you have to choose the MIC with higher sensitivity.

So the ECM just have more sutiabler ,do not have best.
if the sensitivity of the MIC just about -44dB or -46dB the voice is much lower than -34 and -36dB.

But if you choose the sensitivity much more that your need ,the MIC would have 'NOISE'.

As details please check our website www.lxmic.com

B.Regards
Gary
Gary, I went through some of the specs of those capsules last night.
And a lot of the omni mic specs for impedance just say "low impedance".

That's not enough information for something as critical as impedance.
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Old 17th September 2009, 01:09 AM   #8
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Quote:
Originally Posted by Tech View Post
Gary, I went through some of the specs of those capsules last night.
And a lot of the omni mic specs for impedance just say "low impedance".

That's not enough information for something as critical as impedance.
The impedance is about 1.5Kohm to 2.2Kohm Which use the K596 FET.
But the MIC which diamter is 6mm ,4mm,4.5mm and height is 2.7mm, 2.2,1.5mm the impendance is about 1Kohm. The FET is 2sk1109 ,TF202,or RJN1164.

Different FET has different impedance.

And 'Steerpike' said the MIC all have noise maybe because of the directional type you used omni-Directional and the sensitivity is more high. You can look through the web link of ours www.lxmic.com Maybe the broadcasting MIC can meet your need .

B.Regards
Gary
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