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Herbert Verdino

Schoeps CMR vs. DPA MMP-G

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Hi, 

did any one do a comparison of this two?

In both solutions it is possible to connect a normal mic capsule from Schöps or DPA to a wireless body transmitter.

On the Schöps page is written, that you have only 60% of the normal dynamic range, using the CMR, which concerns me a bit?

Does the same go for the MMP-G...?

 

 

 

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ive not used the Schoeps version. but have 4 of the DPA MMP-G
looking at the specs, as long as your radio mic will provide 5v, you have 122dB max SPL.

but Schoeps and DPA use different powering methods for their mics - the DPA are electret mics, which i suspect helps get around the limitation SChoeps have found with the CMR accessory.

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5 hours ago, Christian Spaeth said:

I thought Schoeps are really electret, too.

 

The CMR uses the standard Colette capsules which are not electret -- they're externally polarized.

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well... on the Schoeps site is the following written:

 

Sensitivity

ca. 0.6 times the value as measured with a standard CMC microphone amplifier. For example with the MK 4 cardioid, the sensitivity is about 8 mV/Pa, the maximum sound pressure is 130 dB SPL and the equivalent input noise is 29 dB CCIR or 18 dB A-weighted.

 

....and here are the normal values from a MK 4 capsule:

Frequency range 40 Hz - 20 kHz 
Sensitivity 13 mV/Pa 
Equivalent noise level (A-weighted) 15 dB-A 
Equivalent noise level (CCIR) 24 dB 
Signal-to-noise ratio (A-weighted) 79 dB-A 
Maximum sound pressure level at 0.5% THD 132 dB-SPL 
Length 22 mm 
Diameter 20 mm

 

 

 

So my question now is, how this value changes have impact in real live location recording. Since I want to buy such a solution, maybe it is better to go for a DPA, which are electret mic's and are better suited for low voltage?

 

I use Lectrosonics transmitters, by the way.

 

 

 

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16 minutes ago, Herbert Verdino said:

...

So my question now is, how this value changes have impact in real live location recording.

...

 

It's about a 5dB difference in dynamic range.  Do you often push the limits of dynamic range?

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