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About JayKay

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    Interested in capturing sound.

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  1. JayKay

    Rode Ntg3

    Sorry, I did read that wrong... So yes, the difference between the two mics is about 6,5mV which in this case comes out to be 2dB. But 9,7dB difference sounds a bit excessive. @Adam White You have to be 100% sure that the gain of both channels are set to an equal amount for your test to work. You could do the following test to check if your system is setup properly: Record the same audio (e.g. short music track) with the same mic but first on channel one and then on channel two with the gain set to an equal amount on both channels. Both recorded tracks should then have the same amplitude. So, your gain plugin should then measure zero difference between the two recorded tracks. If that's not the case then there is something wrong with your test setup.
  2. JayKay

    Rode Ntg3

    @Rick Reineke how did you calculate the sensitivity difference? I also did the math and I got a 2dB difference in sensitivity. NTG3: 31.60mV/Pa = -30dB re 1 VPa MKH416: 25mV/Pa = -32dB re 1 VPa -30dB re 1 VPa - (-32dB re 1 VPa) = 2dB diffrence in sensitivity between the two mics according to manufacturers specs @Adam White how did you test the sensitivity difference?
  3. JayKay

    Zoom F8n.

    In the past I tested the Limiter of the F4 (which should be the same as on the F8) and the dynamic range did not increase when the limiter was engaged. As expected, it merely shifts the dynamic range upwards a bit. Depending on the gain setting you do get at least 10db more headroom but of course the noise floor of the ADC also rises by 10dB. So, overall the dynamic range stays the same. At 2:55 you can see the noise measurements if you are interested: That said, an ADC with 120dB dynamic range is already very good and will be sufficient for the most recording situations.
  4. @mikewest I did a few more tests and found out that this problem only occures if phantom power is enabled. My guess would be, that phantom power is leaking into the preamp on channel 1. Sound Devices set me up with an RA and I´m currently sending them my devices.
  5. You are right, but this problem is not affected by the source impedance. I also tested it with a 150 ohms resistor... Same result. Btw. the noise ch 1 is only more noisy in the lower frequencies. 500 hertz and below which is unusual. At 20 Hz ch1 has 14db!!! more noise than ch 2 or 3. This device was already sent to Sound Devices by my dealer and they said, that everything is fine So if anybody else is experiencing this, it might even be a design flaw...
  6. Hi together, would someone with a MixPre-3 do me a favor? Could you connect nothing to the XLR-Inputs at all, turn up the gain on all channels all the way and turn the faders to unity. Then take a photo of the display, where I can see the levels of all tracks. My MixPre-3 seems to have a problem with extensive noise in channel 1 compared to channel 2 and 3. And when I do the test above, the level of channel 1 is quite a bit higher than channel 2 and 3. I want to know, if I´m the only one with this problem or do other MixPre-3 users experience this as well. Thanks in advance!
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