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JFtaper

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About JFtaper

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    field recording guy
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  1. lots of discussion over here https://taperssection.com/index.php?topic=190161.0
  2. several smartwatches can control recorders and recording apps (apogee metarecorder, sony, roland, etc)
  3. dpa in longmont does it for $50 per. fill this out and they'll email you an RMA https://podio.com/webforms/18784522/1263978
  4. you might want to try measuring voltage under load. official DPA accessories like d:vice and the DAD6001 phantom>microdot adapter only give ~2.6V when loaded with an MMP-G. running it with a consumer sony handheld that provides 2.4V under load, sound is good, and noise is very very low, around -90 dB down
  5. right.. dynamic range is not the same as max SPL crudely dynamic range would be equal to Max SPL minus self noise
  6. not sure where that 122dB max spl came from, i dont see a max spl listed for MMP-G perhaps that was a typo as 122 dB is the dynamic range spec.... or maybe they used to publish the spec and updated it max SPL would be dependent on capsule but preamp also plays a role. For example a MMC4011 cap clips at 159 dB on an A preamp, 152 dB on a C preamp, and 144 dB on an E preamp. the G is probably closer to the E although it has a lower dynamic range (122 for the G vs 131 for the E). just a guess comparing these that a MMC4011 on an MMP-G would clip in the upper 130s
  7. Larry what is the available current on the dedicated 5V pin? with a 2 mA (1mA x 2 mics) load it dropped to 4V (slightly less than 4V on one channel) also can you clarify which DPA you are talking about? i think you mean 406x but this thread is about the MMP-G thanks
  8. also worth noting that not all packs put out the full 5V the DPA requires. for example servo input on the lectrosonics SPDR can put out 0, 2V or 4V on a 2-wire bias power, which is lower than spec for the 5V DPA microdot-powered mics require (why many people favor 3V 4063s with the lectros). i have tested myself that 4061s had about 6dB less headroom (due to higher noise floor) when powered by servo input at 4V vs 5V the lectrosonics dedicated 5V rail (used for the 3rd wire in a CMR) puts out only 3.95-4.05V under load, at least on the SPDR i tested (they say servo inpu
  9. fortunately there is no shortage of affordable multitrack recorders these days
  10. sensitivity is 60%, not dynamic range they are 4 dB less sensitive than a CMC-powered cap due to slightly reduced polarization voltage (ive been told 40V, but ive also been told by schoeps that output level varies with input voltage, presuambly this might affect polarization voltage). Ive always run mine from 7-10V just in case.
  11. yes i try not to speak out of turn, ive never used timecode only wordclock in with multiple audio devices.
  12. interesting. i know guys that do multitrack audio with multiple recorders and claim they get audible phasing in short order. a quote from a friend from another board I generally allow +/- 20 ms max error, which would be +/- 960 samples at 48kHz. Some purists will say that they can hear 10ms smear but I don't find it much of a problem for rock & roll. Sony, Tascam, Roland (Edirol)... none of these machines have tightly matched clocks between machines. After an hour, you can hear a "Flam" on almost any two recorders. Use my spreadsheet if you would like to fiddle
  13. i hope firmware would fix some shortcomings, its a well built unit with good sound on the analog in. Support wasnt very useful in regard to unit function, just first level support i had high hopes but ended up returning the one i purchased. I was hoping for a low-pro unit that could power my Schoeps CMRs (and occasionaly DPA 4061s) without an additional box, as well as capture digital signal from my portable Benchmark ADC. It did power the CMRs but barely. the dedicated 5V rail (CMR is a 3-wire mic) dropped to 4V and below (slight difference between channels) with even the minimal
  14. while using wrong impedance cable can cause jitter and dropouts, it wouldnt cause digital gain and signal processing. some hardware is pickier than others but usually if it locks right away an doesnt drop out it will pass the digital data adequately digital cable isnt typically twisted pair its almost always coaxial (or balanced + shield in the case of AES). in my tests above i hacked up a canare 110 ohm AEScable originally equipped with 3-pin XLRs , as i had to make the requisite 5-pin TA5F termination on the end
  15. Thats because the SPDR is not a bit-accurate device, it resamples all digital inputs (among other digital processing). It does not write raw data like bit-accurate digital recorders I noticed this behavior when feeding it AES from my benchmark ADC, which has very accurate meters with peak hold. With the benchmark peaking at -1 dBFS the SPDR was clipping past FSD so i knew something was wrong right away, upon further investigation (comparing signal from same ADC captured by a known bit-accurate device with that recorded by SPDR), it is distinctly different. T
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