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karlw

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Everything posted by karlw

  1. Dejan, bias of 4v works just fine with the DPA lav mics and 4099s, etc. In fact, I'm doing a setup right now with our SSM and some 4099s, and they sound great together. I do set the load impedance to "0" instead of low, though, for more sensitivity with this particular mic. That is always an option.
  2. Looks like the PLL has come unlocked. We should take a look at that unit in our service dept.
  3. Vector Diversity is available in digital and Hybrid modes in the DCR822 and in the DSQD V2. I would say, though, that Vector yields more of an improvement over standard ratio diversity when using digital modes.
  4. Off and on for some years now we have had reports of a “whine” at 2.75 kHz in the audio of the SMWB family transmitters. For the customers experiencing this issue, the short term “bandage” has been to turn off the remote capability of the unit. Units that were sent in to our service department received replacement circuit boards. In other words, this has not been an ideal situation. I have good news! Our intrepid programmers have found a way to solve this problem purely in firmware. Thus, we have now published updates for ALL versions of the SMWB family transmitters, including models specific to International markets, and even for those models with older hardware made prior to mid-2019. All of the specifics of all the different versions, with full revision history for each are here: https://lectrosonics.com/firmware/category/174-smwb-series-firmware.html Please note that it is extremely important that you follow the information on that page carefully. Because we have made these transmitters for more than 4 years, there are different hardware versions out there. Installing the wrong firmware can “brick” these units, requiring further handholding that I’m certain we all want to avoid. The instructions for the process of updating the firmware in these units is in the manual on p. 18. https://lectrosonics.com/downloads/category/61-transmitters.html?download=736:smwb-manual-all-models We are here to help! If you have ANY QUESTIONS or have any doubt about this process or which version to install on a given unit, please contact us at 800-821-1121 (US) or +1 (505) 892-4501 email is service.repair@lectrosonics.com
  5. Update: we dug through the archives from a few years back and found the background info on why we "corrected" the polarity of the DPA input setup for the SSM. We found that the original version reversed absolute polarity. With firmware v1.03 this was corrected so that a positive sound pressure at the mic capsule results in a positive voltage on pin 2 of the receiver output. It may be that the A10 system then is "reversed" in this regard.
  6. The end-to-end latency with the SSM and any 3rd-generation Hybrid receiver (SRc, Venue 2) is about 2.9 ms. Your figure for the A10 is correct, thus the difference between the two should be about 0.9 ms. There are several ways to adjust for the polarity mismatch - first, as you suggest, the output polarity in the A10 receiver can be switched to reverse. This can also be done in the Lectrosonics receiver. Also, instead of "DPA" input setup in the SSM, use a custom setup with the following values: Bias 4, Reistance Lo, Polarity pos (normally it is "neg" in the standard "DPA" setting). It may be that either the A10 system or the Lectrosonics system reverses polarity in an absolute sense. But if you ever only use one of the systems, you would never notice. It's not something you can typically hear on its own. If the two systems are used for different things, i.e. lav and boom, you might not notice it then, either, since the boom mic is usually a couple of feet away from the voice while the lav is a few inches - the natural delay difference means that you wouldn't necessarily hear a phase cancellation from different signal polarity. But, you might be able to see it in the waveforms.
  7. We have shipped IFBlue receivers in the A1, B1, C1 and 941 bands. Currently, A1, C1 and 941 units are in stock at the HQ (this changes daily, however). And, we have another batch in the works, likely available in late January. The 941 units are compatible with the IFBT4-944 transmitters, although those transmitters offer 8 MHz of tuning range (944-952 MHz) while the IFBlue 941 receivers have a 19 MHz tuning range (941-960 MHz). As long as the transmitter & receivers are on the same frequency, they will work - no pilot tone compat problems in IFB mode.
  8. LuisT, what version of firmware is running in your SSMs? If it is v.1.02 or earlier, we corrected that in v.1.03 and all subsequent versions.
  9. Most likely the display itself would need to be replaced. Contact our Parts & Repair dept. and they can provide the info. 800-821-1121 or service.repair@lectrosonics.com
  10. Jobo, not that I'm aware of. All the USB cables I have laying around here work for me. My only thought is that the connector itself must be fully seated in the receiver micro-B USB socket.
  11. We'll take a look at that. Thanks for letting us know of your concerns.
  12. I'm usually in favor of making sure the limiter is "tickled" on peaks, where you see the -20 LED blink red just briefly. To me, it isn't audible, and it means that you've got a better s/n ratio. What that numerical gain setting will be depends on the mic, the actor, etc. I'm not sure about where the gain would be set to not hear the ticks, I do think it depends on a number of factors. You might be able to experiment and develop that threshold for your own ears, with the mics you normally use, etc.
  13. Hi Jawharp - how is your transmitter gain set? We usually only hear about this when the TX gain is low (i.e. set to completely avoid engaging the input limiter) and then the gain is made up later in the audio chain. That said, there is a way to bypass the auto IQ filter switching. This is done using Wireless Designer with a command entered in the Wireless Designer Command Terminal window. The command is “eniqctrl”. Send eniqctrl=1 to enable the control feature Send eniqctrl=0 to disable the control feature When the feature is enabled, a new item appears at the end of the RX menu in the Venue 2 receiver frame, named “iQ MODE”. When this is selected, a page opens which allows you to select 1 of 3 iQ filter modes for each receiver: Auto, Wide and Narrow. Auto is the default state. Wide and Narrow are fixed modes for use when filter bandwidth changes cause clicks in the audio. The Narrow setting should only be used when received signals are relatively strong because the insertion loss of the filter is 8dB greater than the Wide filter. That said, I have generally recommended using the “narrow” setting, and have not heard any complaints. More and more, our mantra is “filter and attenuate” since the RF noise floor is getting ugly out there. If you have range problems, then change it to “wide”.
  14. Jobo, yes - you can connect multiple devices, and different types of devices to Wireless Designer at the same time. You can even use a mixture of network and USB connections. Up to 99 frames are supported, so there is plenty of room for more than enough units. Devices supported are: Venue 1 Wideband, Venue 2, DRM, M2T, DSQD, and now DCR822. Be aware of the following when preparing to connect your DCR822 to Wireless Designer via USB: The DCR822 must have the micro and FPGA firmware both updated to v1.30 or higher (you don't need to update the bootloader). https://lectrosonics.com/firmware/category/156-dcr822-firmware.html Wireless Designer Version must be at least 2.0.30 for macOS, or version 2.0.34 for Windows. These are also available on our Support website at: https://www.lectrosonics.com/wireless-designer.html You may need to install or update your USB drivers, and that info is also on the same page. Any trouble, please reach out to our Parts & Repair dept at service.repair@lectrosonics.com, asktheexperts@lectrosonics.com or 800-821-1121 (if in the US).
  15. karlw

    DCHT & M2R

    The way to do what you're suggesting, with current Lectro offerings is to send using any one of the mono digital transmitters (DBu, DBSM, DPR-A) and then use a DCHR as the receiver. The DCHR can pick up mono or stereo digital transmissions, and then offers both locking TA output, *and* a headphone output.
  16. Check with our dealer in Italy: Nagrit SRL - they can advise on the best blocks there and whether or not Block 21 is good https://www.nagrit.com/en/lectrosonics-m-12.html
  17. If they never worked well, we would have liked the chance to provide assistance! Let's get those units in for a checkup. There are probably some hardware & certainly firmware updates we can do that will likely improve the performance. Please contact our Parts & Repair dept. at 800-821-1121 or service.repair@lectrosonics.com. In terms of finding and coordinating frequencies, an app like Freq Finder will work better in multi-channel situations than just using SmartTune, which was designed for small channel-count situations like ENG.
  18. The thoughts I have are: 1. The 788 was fairly well known for radiating RF - have you tried the setup with the recorder off? I realize this isn't a useable solution, but may point to part of the issue. 2. The Betso antennas are wideband, and may be picking up strong out-of-band RF energy, which doesn't make your receivers happy. 3. You may be in an area or on a location where there is a lot of RF energy - again, out of band, but may be affecting your system. 4. As others have asked - how are you choosing your frequencies? This can have a major effect on performance. First, any hops or IFBs should be as far away physically and frequency-wise from your talent channels as possible. 5. Consider adding passive filters. This is becoming more necessary with the very crowded UHF spectrum and high-energy sources outside the band (Walkies in 450-470, 5G in the 600 Mhz band) 6. You don't mention the age of your units or the firmware versions - there have been many revisions to the SRc over the last 5 years. Yours may be due for a checkup by our techs. 7. Are your receiver antennas remoted away from the bag? This can help a great deal. 8. Someone else asked about your distro - lower quality units can have issues with strong out-of-band RF energy.
  19. FWIW the way I've understood to best use RHCP and LHCP antennas is to use one type on your receivers, and the other on your IEM/IFB transmitters (assuming you're using helicals for that purpose) because of the resulting inherent slight attenuation of the IEM/IFB signals getting into the receive antennas (the polarizations "cross" at 90 deg. which is akin to having your transmit antenna vertical and your receive antennas horizontal).
  20. karlw

    Turntables

    Back in the '90s when I was much more into the "audiophile/hi-fi" thing than I am now, belt-drive 'tables were the thing. DD tables have advantages, too, of course. And Doc - you're right, DD tables come up to speed quickly, have more torque, can often be more accurate in terms of on-pitch or speed. These are huge advantages for DJ work, and of course can sound great if designed right into an audiophile 'table as well. If I remember correctly, the advantages of belt-drive is that any motor chatter would be absorbed by the belt. I still own a VPI HW-19 mark II, that I modified a bit here and there, purchased used in probably 1995. It is the simple silicone belt, heavy platter (19 lbs) unipoint bearing design. I've never once been disappointed by this 'table - it sounds truly great when set up right and with a good cartridge, which has been the case for the past 26 years... And I don't think I've ever heard a better 'table than a Linn LP-12 with all the trimmings. But I haven't listened to many newer 'tables since the '90s. So, there could well be newer ones that are equally or even more impressive.
  21. Hi, normally scan files in CSV format import easily. Can you send me one of your files in a PM? I'll take a look at it here and if need be, show it to our programmer.
  22. There are passive splitters that pass DC on one leg, i.e. there is DC coming from one receiver, say, and no DC coming from or going to the 2nd receiver. But the DC from the first receiver gets to the antenna. Audio Technica and Shure offers one that appears to be exactly the same, made by RF Venue. https://www.audio-technica.com/en-us/2x1split
  23. Any big difference in audio gain between the DCHR/DCHT channel and the other 3 channels?
  24. Donald, glad to hear you have it sorted!
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