JimKeaney

I'm trying to find a wiring diagram for these WL183/184/185 lavs with Zaxcom Lemo3 (TRXLA 3.3v).

Shure's Lemo3 wiring leaves the mic with quite a bit of hiss/noise floor (too much in my opinion). 
 

To connect a Shure lapel mic (e.g., WL183) or headworn mic (e.g., WBH53) to the Shure WA336 Lemo 3 connector:

• Shure black wire (audio) and Shure cable shield (ground) to Lemo pin 1
• Shure red wire (bias) to Lemo pin 3

Good question, Trey. I'm mostly using Normal Sensitivity Cos11D's and I've had them clip (if a cast person laughs/pipes up or happens to look right down into their lav - working on a ladder looking up talking, then looking down talking - that can be a ~20db swing). I understand this clipping is possible because the Cos11D are slightly underpowered by 3volt Zaxcom Transmitters, so they clip out before the advertised dynamic range. This shortcoming basically defeats the TX's "Neverclip". I too keep my MRX's at 0/unity and ride TX gains too, but now I'm wondering if I (too) go lower on the Packs and make it up at the Nova. I just wish the older transmitters could properly power a Cos11D, because I personally like them better than the 4063/6060.

Double-check that you're plugging the cup into that one Hirose 4 lightly-labelled DC IN (on top far right). I know this might also sound obvious, but I remember seeing another post a while back where a user went into one of the other 8 Hirose's (which are the outputs). The interesting thing is it will still pass Power if you went in/out on those 8 (like a passive splitter)... but data/telelmetry can only come in on that one IN port. Might be easy to miss this in a dark bag/cart/rack.

On 1/6/2021 at 6:58 PM, PELICULA said:

Anybody know when the RX8 is going to be available?

 

Looks like RX8 is coming next week according to an update Glenn made yesterday on the Zaxcom facebook group. 👍👍

On 1/26/2021 at 3:29 AM, Constantin said:

Quite impressive. However, I can't begin to express (on a public forum) how very annoyed I am by the stupid background music in the video above. This would have been a good opportunity to listen to the system as well, especially that guy on the lav, but there was no way to judge background noise and other artifacts. 

I agree about the bg music, but I don’t believe there would be any artifacts as it’s 100% digital. 
 

I got to demo an Axient rack system a couple weeks back and the range does seem to be unmatched (especially based and at such low RF power settings). They have the tiny internal antenna’d transmitters, they just need to figure out a bag sized receiver. And if they can somehow get their 2.4ghz Showlink remote control tx integrated, it would be a welcome disruption.

Any update on the RX8 release? 

On 9/13/2016 at 3:43 PM, LarryF said:

Hi Shawn,
1. Shield to pin 1 of the TA5. Also use lower fingers of the TA5 strain relief to grip the shield for RF grounding. Upper fingers grab insulation.
2. Red wire (Fet drain) to pin 3 of the TA5.
3. Black wire (Fet source) to pin 5. This puts a 2.7k source load to the mic.
4. Jump pin 2 (5 Volt) to pin 4 (bias set) to get the 4+ Volts setting of the Servo Bias.

This all assumes the Shure schematic on their website is correct. Sometimes the manufacturers get cute and don't show a true schematic.

If you need more gain, run the black wire to one end of a tiny 1k resistor. The other end of the resistor goes to pin 1 ground. As a test, you can try running the black wire to pin 1 for maximum gain.

You can do all this testing without crimping the strain relief and without the black cover on the TA5F. You don't even need the metal locking section. All you really need is the plastic pin carrier with the wires attached and it goes on and off the pins in the SM very easily. It makes it easier to reconfigure the connections. Once it all sounds right, do a full assembly of the TA5F with the locking section, crimps and plastic strain relief.

Best Regards,
Larry F

Hi Larry,

I have found myself wiring some Shure 184's for Lectrosonics TA5. Can you clarify if when you suggested running the black AUDIO wire to pin 1/Ground without the resistor, you mean **instead** of going to Pin 5 at all? Or... Black wire to Pin 5 + Ground?

Thanks!

-Jim

 

On 10/11/2019 at 4:19 PM, Nick Flowers said:

 

I shot this with for BBC Nationwide in the mid 1970s with a  Audio radiomic. 

Awesome. Did he land on a cat?

I experienced similar issues using that same exact setup (SNA600a's/PSC Multi/SRc's&Srb). I brought it up recently on one of the sound facebook groups and it was interesting to see many other mixers say they also witnessed the same issues (taking hits) and many of them had abandoned that rig all together for bag use. I too have since abandoned it. The dipoles do offer more gain (you can see it in the scans - compared to whips) and I believe that gain is overloading the receivers front end? It can't help to be running a hop transmitter less than 12" away either (and most of us are in a bag rig). That said... the dipoles do out perform the whips by almost double the distance (according to my field test) however the unfortunate trade-off is that they don't do well at close range (approx less than 50'). Perhaps Lectrosonics might design a SNA600B (B for "bag", optimized with an attenuator and/or PSC could offer some adjustable band pass filtering/attenuation) until then I'm sticking with whips in my bag. 

PS I considered trying 1 Dipole & 1 Whip, for 'best of both worlds' but as the OP pointed out: the RF signal isn't dropping when these hits/dropouts happen - so I believe diversity-wise, the RX would still choose the channel with the most gain. Too afraid to find out though ;)

Good news for the B1 folks... I just received a UPS notification that my SRc-B1 now has the new rev board in it and it's on route to me 👍

On 1/20/2018 at 11:23 AM, codyman said:

I got my SRc back from the mothership a couple weeks ago (its second trip there).  Seems to be working fine for me now...

Do you know if your unit received the new PCB?

I sent my SRc-B1 back to Lectrosonics late Nov 2017. Here's the latest update from Lectro (last week):

"I didn’t see the post (*referring to this JW thread*), but it is at least partially right.  We were applying a component update to correct the range issues with SRC, however during that time, our engineering dept was working to have a new pcb made which would implement the update as well as other improvements they wanted to incorporate to better its performance. The boards are close to being ready, but it could be awhile before we have boards available for the units I currently have in-house to receive the update. I’m sorry I can’t be more specific, but I don’t have a firm ETA from engineering yet.  I know they are still in the testing process. If you’d like, I can return your receiver, or we can continue to hang on to it to wait for the new pcb."

I'm happy to leave it there until it's figured out.

"You Don't Know How It Feels" was one of my favorite songs to reference an unfamiliar PA system. You can almost mix the song with a graphic EQ. Timeless music - never sounded dated to me.

On 1/9/2018 at 12:46 PM, janz said:

Hello guys,

 

ID numbers of RXs is there for easy identification of receiver. If you have more pieces, you know well, which one is out of range, which one has dead battery etc. There are 5 channels, which can prevent problem with other systems on one place.

 

If you know, that your system can be disturbed with other one, you can use TCX-2 as a stand alone units without RF. But to be honest, I think you won't be disturbed by other BETSO systems at one place. We have never heard about this issue..

 

Thank you for using BETSO!
 

Kind regards,

 

Jan Zastera

BETSO ELECTRONICS

 

 

Thanks Jan for the info. I'm still curious regarding the ID of the receivers... Where can I enjoy this telemetry information? Via a TCX-2 in transmitter mode? Or using different model Betso products/software?

The video isn't showcasing RF interference. It's showing how these units react if/when another TCX-2 transmitter (assigned to the same channel) comes within range (spoiler: nothing happens, until the first tx goes out of range - then the other takes over - but again this is a short unscientific test). These units can be named with 20 different ID numbers, but I'm not sure what the intended purpose is of that is. Perhaps there is software coming? Probably a question for Betso.

Here's my latest bag... Singray JR, 633, SRb w/2x smqv, SRc w/2x LT, 2x smqv as cam hops to another SRb. Audioroot BDS.  Ruggard lens pouch for lavs, tackle box for bits/concealments. 

On October 2, 2016 at 3:56 AM, atheisticmystic said:

A Rycote Overcover stuck to the opposite side of the RM, so it is between the pullover and the shirt. The overcover does well at defeating both rubbing against a garment AND a hairy chest. 

^ I remember the day I thought of this reverse over cover idea (not RM, but moleskin blanket/topstick) and yes it is a substantial trick to have in the bag.

Mind if I wake this thread up? I've been working with a C300 outfitted with a Teradek Bolt 600 for the past 2 weeks and I'm getting very limited range and occasional RF hits with my Lectrosonics wireless (SMQV/LT with SRc&SRb) in BLK 21... Even standing 12 feet away in the same room. Scans looked clean / and I'm using a frequency coordinating app. Was anything ever rectified from Teradek as far as the 500MHz RF spill? Any tricks or ideas for me using blk 21 channels with a Bolt 600 nearby?

On May 26, 2016 at 9:58 PM, Tom Craca said:

I've had a recurring problem with my usb keyboard with both my 633 and 688.  Worked fine the first few days, but ever since it will lose connectivity and I couldn't get it to work again each day.  Finally figured it out today.  Seems like if it starts working at initial setup, which it always does, and then perhaps I'm fiddling with outputs or something and it becomes unresponsive, I couldn't get it back regardless of unplugging or power cycling.  Today, it happened again, and the only way I can get it to reconnect is to power down the 6 Series, AND cancel the quickboot (hold the menu button for 5 secs).  Then, on power up, the keyboard is recognizable again.  Seems like a ground burp that affects the USB port or something.  

 

Hi Tom,

Curious what firmware you're operating on with your 6-series recorders. SD fixed the following bug in their 1.04 firmware release (Jan 2015) 

• USB port is now reset when the 633 detects an unresponsive keyboard.

Sounds similar to your symptoms. That was something I encountered a while back myself. SD made further improvements to the USB Keyboard functionality in 2.11 (Feb 2016)

• Keyboard sequence involving Shift key would sometimes repeat the same character as if the key was being held down.

Best,
-Jim

When I discovered this forum (not that long ago - maybe 6 months back) it was the result of Googling a question I had about some equipment. Sure, I could've called the manufacturer, or read the F-n manual, but I decided to ask the guys here. Mike instantly private messaged me his response, which was basically what his pen reads + maybe an insult, I'm still not sure. I was confused about why he was responding (using the quote function and all, but) privately. I wrote him off as a lonely troll... and contacted the manufacturer. Turned out to be good advice, Mike. They knew the answer.

Now that I've had some months to read through many old valuable threads here, I find the Senator to be very knowledgable and actually endearing (in an east coast kind of way). His relentless non-answers usually sum it up. He's been around the block and knows his stuff and in most cases... yeah, it depends.

If the Senator ever made you feel dumb, that might have been a chance to learn something. 

Thanks for the info. Looks sleek. I'm using battery sleds for my 2 SR's. I wonder if they'd fit into the dashboard holes with sleds (without batteries of course), that way I could still use them for camera hops when needed. 

What is that dashboard for the SR's? DIY or available somewhere?

I have incurred a bad read on a (manufacturer approved) SD card. Turned out to be be the card reader. I reseated the card and transferred again and all was fine. Luckily I quickly scrubbed through the first rip and noticed it (loud blasts of static noise across all ISO's) before I delivered to client. Gave me quite a scare.

Thanks. I got the 110cc. Makes sense

 Cool rig, Alex. Just curious, what model boom pole is that? Mine doesn't quite fit in my 1650.