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Re: External preamp for Marantz PMD 661?

Subject: Re: External preamp for Marantz PMD 661?
From: "Mitch Hill" wa1ykn
Date: Tue Mar 19, 2013 7:17 am ((PDT))
To augment my previous post on the subject, with the two SD302 + MixPre,
I normally use 6 ME/K6 series Sennhiser and a pair of R0DE NTG3 mics.
Its not about noise reduction as mush as it is the mixing capability and
not having to run the recorder at maximum gain... I am very happy with
this configuration having abandoned a DR-680 recorder in the process of
reaching this setup...

Mitch...

--- In  "Raimund" <>
wrote:
>> < While the noise floor is established by the noisiest element, in this =
case the mics, & thus can't be improved, he would get more overall gain, wh=
ich I believe is what he's seeking. While one can always add gain in post, =
there's something to be said for staying away from the bottom few bits in a=
n inexpensive ADC & getting the majority of the signal to hit the upper 40 =
- 50 dB of the available dynamic range.>
>>
>> Well, this would be an issue if the maximum gain of the recorder was not=
 sufficient. However, at its maximum gain setting, the input clipping level=
 of the Marantz PMD661 is -52 dBu and the A-weighted noise floor of the Sen=
nheiser K6/ME66 is -108 dBu, which means that a completely silent recording=
 would already exhibit a signal level of -56 dBFS. Assuming a poor A/D conv=
erter dynamic range of 90 dB, there would still be a large "safety" margin =
of 36 dB.
>>
>> So, if one is willing to invest additional money, my advice would be to =
upgrade the Senheiser K6/ME6x microphones to the MKH series for instance.
>>
>> Regards,
>> Raimund
>>
>
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--
--
Mitch Hill

(Sent from HP DV6T)







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