resonate Posted April 14, 2015 Report Share Posted April 14, 2015 http://www.newsshooter.com/2015/04/14/nab-2015-sennheiser-avx-digital-wireless-mics/ Sennheiser is tackling the problem of reduced frequencies available for wireless mics by introducing new digital units in the 1.9ghz frequency range. AVX wireless mics are coming in June with the body pack lavalier and receiver setup for $899. The AVX system uses rechargeable batteries (4 hour life on receiver; 15 hour life on body pack transmitter,) that recharge via the universal micro usb cable found on many cell phone chargers. The mics can also run continuously if powered by the micro usb. The receiver is a unique cable-less design that plugs directly into an xlr port on your camera. It comes with a cable adapter if you need to use it on your dslr with a 3.5mm plug. The expected range is around 30 meters for the mics. They operate on the 1.9ghz frequency range, where baby monitors and the like operate. No license is needed. The digital system means the receiver and transmitter pair together automatically without having to worry about what frequency they’re on. They’ll automatically jump to new frequencies if it senses interference, and they claim there will be no effect on the audio. Quote Link to comment Share on other sites More sharing options...
codyman Posted April 14, 2015 Report Share Posted April 14, 2015 The spec sheet is up on their website. It says "RF output power - adaptive up to 250mW (peak) country specific" which at ~$1k, is pretty impressive. Quote Link to comment Share on other sites More sharing options...
Todd Weaver Posted April 15, 2015 Report Share Posted April 15, 2015 At those low power requirements, why don't they just phantom power the receiver off of the xlr input? Quote Link to comment Share on other sites More sharing options...
Constantin Posted April 15, 2015 Report Share Posted April 15, 2015 At those low power requirements, why don't they just phantom power the receiver off of the xlr input? Not all cameras provide phantom power, especially those without full size XLRs Quote Link to comment Share on other sites More sharing options...
Constantin Posted April 15, 2015 Report Share Posted April 15, 2015 It says "RF output power - adaptive up to 250mW (peak) And yet, only 30m range. My babyphone has better range Quote Link to comment Share on other sites More sharing options...
DanieldH Posted April 15, 2015 Report Share Posted April 15, 2015 "Auto frequency management" Would that mean the RX talks to the TX to administer frequencies? "AES 256 encryption" I wonder if they will elaborate on the implementation. Quote Link to comment Share on other sites More sharing options...
Todd Weaver Posted April 15, 2015 Report Share Posted April 15, 2015 Not all cameras provide phantom power, especially those without full size XLRs Yup, but this model appears to be made to plug directly into full size XLR only. I'm not aware of many cameras or small field recording devices with full size xlr that don't have some level of phantom power available. Quote Link to comment Share on other sites More sharing options...
Constantin Posted April 15, 2015 Report Share Posted April 15, 2015 Yup, but this model appears to be made to plug directly into full size XLR only. I'm not aware of many cameras or small field recording devices with full size xlr that don't have some level of phantom power available. According to post #1 it also comes with an adapter cable so it can plug into the audio input of DSLR cameras. They wouldn't want to preclude that market with such a product, I bet Quote Link to comment Share on other sites More sharing options...
Todd Weaver Posted April 15, 2015 Report Share Posted April 15, 2015 Put a battery in the adapter cable then... I'll try to refrain from any further arm chair backseat engineering. Quote Link to comment Share on other sites More sharing options...
RobertSzabo Posted April 16, 2015 Report Share Posted April 16, 2015 http://www.bhphotovideo.com/explora/audio/news/nab-2015-sennheiser-announces-its-next-generation-avx-wireless-system Quote Link to comment Share on other sites More sharing options...
daniel Posted April 16, 2015 Report Share Posted April 16, 2015 http://www.bhphotovideo.com/explora/audio/news/nab-2015-sennheiser-announces-its-next-generation-avx-wireless-system nice, it looks for p48 and will use if available. the apogee thing looks handy too. can pair the iphone recorder with the tx through the hp circuit :-) Quote Link to comment Share on other sites More sharing options...
daniel Posted April 16, 2015 Report Share Posted April 16, 2015 nice, it looks for p48 and will use if available. the apogee thing looks handy too. can pair the iphone recorder with the tx through the hp circuit :-) i wonder if, when you power down the p48 and the rx switches off, the tx switches off too? Quote Link to comment Share on other sites More sharing options...
daniel Posted April 16, 2015 Report Share Posted April 16, 2015 19 ms latency. http://en-uk.sennheiser.com/camera-receiver-extern-wireless-microphone-system-ekp-avx Quote Link to comment Share on other sites More sharing options...
Rich Reilly Posted April 16, 2015 Report Share Posted April 16, 2015 Are you sure it uses P48? I understood it to turn itself on and off by its presence...saving internal battery when camera is shut off. "Switches on/off by P48 Phantom power" Quote Link to comment Share on other sites More sharing options...
daniel Posted April 16, 2015 Report Share Posted April 16, 2015 Are you sure it uses P48? I understood it to turn itself on and off by its presence...saving internal battery when camera is shut off. "Switches on/off by P48 Phantom power" well now you mention it (and i watch the video again). Quote Link to comment Share on other sites More sharing options...
Todd Weaver Posted April 16, 2015 Report Share Posted April 16, 2015 Ha! Quote Link to comment Share on other sites More sharing options...
lestevennok Posted April 29, 2015 Report Share Posted April 29, 2015 Hi, I've just been talking with someone from Sennheiser about AVX. For the phantom power, it's just for putting the avx on/off with the sound device or the camcorder. It's not using P48 as a battery... just for saving the internal battery ! You can use same microphone that you are using with Sennheiser G3 (for example : Tram or COS11 with minijack). You can use it as a mono wireless hop (with 19ms latency), someone make a real test ? is the latency disturbing ? He said too to be aware of wifi around, for 2 and 3 avx systems, it's not a problem but for 15 avx systems + wifi around, not sure it will work... Quote Link to comment Share on other sites More sharing options...
Karri Posted May 12, 2015 Report Share Posted May 12, 2015 For 25 fps, that would be around 3/4 frames. It would be fairly easy to compensate for, but one more step of course. For camera hops, I wonder if the more pressing issue is that automatic dynamic range thing it's using. No idea if you can turn that off. Not a problem for scratch audio, but for someone looking for alternatives for wirelessly hopping usable primary audio it might indeed be a different story. Quote Link to comment Share on other sites More sharing options...
ninjafreddan Posted June 1, 2015 Report Share Posted June 1, 2015 I think it's an interesting system. Think about it, camera men can just press two button and the units are synced. And level control is suppose to be automated. I listened to the system (with the standard table receiver) at a trade show and walked a good 100 meter away before the system started to loose sync. The sound quality is great and I just to a reply from Sennheiser that the lithium battery in the ENG-receiver can be swapped "in two seconds". I've been wondering about the ability to change that battery or not, but luckily it's possible. I'm going to review the system as soon as it's released - mid to late June according to Sennheiser. All the best Fred Quote Link to comment Share on other sites More sharing options...
Rick Reineke Posted June 1, 2015 Report Share Posted June 1, 2015 That would make an affordable single-channel camera hop.. however.. (in case I'm missing something). two receivers can not be set the same frequency. Though I have no experience with these systems as of yet. I will query my contact @ Sennheiser about their D1 system. Quote Link to comment Share on other sites More sharing options...
James Arnold Posted June 1, 2015 Report Share Posted June 1, 2015 19ms is quite a lot. Latency awareness can be quite personal, but with games and TV I believe most people dont begin to be aware of the issue until it hits about 30-40ms. For monitoring purposes 19ms could be quite disturbing though if you are in the same room as the source.What bothers me is the lack of ability for the user to select frequencies - it's all automatic. That and the fact that crap like this is the way production decide they don't need a sound mixer... Quote Link to comment Share on other sites More sharing options...
Rick Reineke Posted June 1, 2015 Report Share Posted June 1, 2015 19ms is quite a lot. Latency awareness can be quite personal, but with games and TV I believe most people dont begin to be aware of the issue until it hits about 30-40ms. For monitoring purposes 19ms could be quite disturbing though if you are in the same room as the source.What bothers me is the lack of ability for the user to select frequencies - it's all automatic. That and the fact that crap like this is the way production decide they don't need a sound mixer... How about the cam op... "What's wrong with the sound".. it's my fault of course. Quote Link to comment Share on other sites More sharing options...
ninjafreddan Posted June 1, 2015 Report Share Posted June 1, 2015 (edited) That would make an affordable single-channel camera hop.. however.. (in case I'm missing something). two receivers can not be set the same frequency. The communication is bidirectional with control information for the frequency swapping, transmission strength and level control - so two receivers most likely can't share one transmitter. There's always the possibility to use two systems together, which is what I want to test. If I fancy the performance of the system, I will still keep my Sennheiser SK/EK2000 systems as in-ear monitoring for the reporter. Cheers Fred Edited June 1, 2015 by ninjafreddan Quote Link to comment Share on other sites More sharing options...
colinmk Posted June 12, 2015 Report Share Posted June 12, 2015 Any idea why the latency is so much in comparison to even the Rode link which is 4ms? Considering these as dual camera hop in the UK - solves the problem of sharing the 606 range, would 19ms not be roughly half a frame delay @ 25fps? Seems fine if so. Also as previously posted not sure about the automatic dynamics, sounds dodgy. Quote Link to comment Share on other sites More sharing options...
ninjafreddan Posted June 12, 2015 Report Share Posted June 12, 2015 Any idea why the latency is so much in comparison to even the Rode link which is 4ms? Considering these as dual camera hop in the UK - solves the problem of sharing the 606 range, would 19ms not be roughly half a frame delay @ 25fps? Seems fine if so. Also as previously posted not sure about the automatic dynamics, sounds dodgy. I recently spoke with a Sennheiser specialist at a trade show and the difference is that the AVX system isn't a 2.4GHz "WiFi" system. It's operating at 1.9GHz which is used for DECT phones and according to him the communication is based on sending packages with a larger "window" than what's used for WiFi. Also, the codec used demands a larger buffer. The good thing is that devices are allowed to scale up the transmission to 250mW at 1.9GHz. WiFi devices are only allowed to transmitt 10mW in Europé and 100mW in the US (correct me if I'm wrong but I got these figures from the Sennheiser guy). AVX will scale up the transmission to 250mW when needed and really should work a lot better than its WiFi competitors. I mean, it's perfectly fine for a musician to use a Line 6 or similar WiFi-system on stage, but for us professionals demanding solid performance at a distance and in RF hostile environments, AVX might be a good companion. Some of my clients are using my Sennheiser SK2000 mono camera hop instead of syncing up my SD664 sound files, and if I can provide them with a high quality camera hop (with a slight delay), my work would sound even better on TV. :-) Cheers Fred Quote Link to comment Share on other sites More sharing options...
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