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Author Topic: Lectrosonics SMV Troubles  (Read 245 times)

AndyMaser

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Lectrosonics SMV Troubles
« on: April 13, 2019, 02:50:40 pm »

Hey fellow sound geeks. So Iím having a really weird issue with my Lectrosonics SMV transmitter. I bought this particular transmitter 6 months ago and have been having intermittent issues with it since then. Iíve had a SMQV transmitter for 6 years and have had zero issues with it ever, so Iíve just kinda assumed that my SMV troubles have been user error. Itís to the point where I really need to get this resolved.

I shot a quick phone video of a receiver during one of the times when the transmitter was acting up. We were all sitting in a car together driving in a rural area: https://drive.google.com/file/d/1mkwRalwsb4IMAHGXXl2qW-ER-klRcm8U/view?usp=sharing
And hereís what it sounds like on the SMV (not synced to the phone video, but the same general time): https://drive.google.com/file/d/1Sy-m2rX_wMHMaVvOrv5dtUclF48TR_yx/view?usp=sharing
And just for a baseline, this is the exact same TC as the above audio file, but from another talent wearing the SMQV: https://drive.google.com/file/d/12EPSokoonnVGbRdGN0MxyjVRL0xGUh9m/view?usp=sharing
Mics are both Sanken COS11.

It seems like it might be a RF dropout thing based on the readout on the receiver, but Iím definitely not confident of that diagnosis. Itís happened in a bunch of different parts of the world and it happens with different receivers. I always do a RF scan and use a clean channel, so thatís not the issue. I swap transmitters back and forth between my UCR401 receiver and my UCR411 receiver and regardless of which itís connected to, the SMV gives me problems and the SMQV is always perfect.

In the instance recorded in the video, I was sitting right next to the talent who was laved and the batteries in his transmitter were good. This has happened several times at close (within 2-5 feet) range, so this isnít an issue with the transmitter being too far away. And pretty much every instance Iíll also have a second talent hooked up with the SMQV transmitter and their signal is perfect.

I would so happy accept that the problem is user error, but Iíve had 6 years of 100% successful operation with my SMQV and that makes me a little skeptical of this SMV. Iíve also rented the waterproof Lectro transmitters a bunch and Iíve never had issues with them.

WTF?!

Just for reference, I'm a filmmaker who does sound. I'm not a dedicated sound person, but I have top end gear and I use it in situations where it's critical that it works.
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MikeHarris

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Re: Lectrosonics SMV Troubles
« Reply #1 on: April 13, 2019, 03:12:47 pm »

As a Lectrosonics dealer I have had less issues than any other wireless brand
Did you purchase this new ?
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AndyMaser

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Re: Lectrosonics SMV Troubles
« Reply #2 on: April 13, 2019, 03:18:40 pm »

As a Lectrosonics dealer I have had less issues than any other wireless brand
Did you purchase this new ?

Yes, I purchased it new from B&H in June of 2018.
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Russell Ault

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Re: Lectrosonics SMV Troubles
« Reply #3 on: April 13, 2019, 03:54:23 pm »

In the instance recorded in the video, I was sitting right next to the talent who was laved and the batteries in his transmitter were good. This has happened several times at close (within 2-5 feet) range, so this isnít an issue with the transmitter being too far away.

Sometimes too close can cause problems, too, especially if you've got multiple channels of wireless mics going. I'll admit I'm not as familiar with the Lectro product, but from a basic RF troubleshooting standpoint, I have a couple of questions:
  • Does the SMV do this when you aren't also using the SMQV?
  • Does the problem seem to be less frequent when the receivers are further away from the transmitters?
  • Are you using any other wireless equipment near the receivers?
  • What transmit power are the SMV and SMQV set to?
-Russ
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Henry Cohen

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Re: Lectrosonics SMV Troubles
« Reply #4 on: April 14, 2019, 10:32:42 am »

Hey fellow sound geeks. So Iím having a really weird issue with my Lectrosonics SMV transmitter. I bought this particular transmitter 6 months ago and have been having intermittent issues with it since then. Iíve had a SMQV transmitter for 6 years and have had zero issues with it ever, so Iíve just kinda assumed that my SMV troubles have been user error. Itís to the point where I really need to get this resolved.

Have you contacted Lectrosonics about this? They're usually quite responsive. Are you running the latest firmware?
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Henry Cohen

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Karl Winkler

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Re: Lectrosonics SMV Troubles
« Reply #5 on: April 15, 2019, 09:43:18 am »

Hey fellow sound geeks. So Iím having a really weird issue with my Lectrosonics SMV transmitter. I bought this particular transmitter 6 months ago and have been having intermittent issues with it since then.

Please contact our Parts & Repair department. They can help troubleshoot the problem and/or set up a Repair Order so we can look at it. They'll ask you for the model & serial number, and they'll probably ask what kind of batteries you're using, microphone type, wiring, etc. If you send it in, they may want the whole system (mic, transmitter, receiver) to properly solve the issue. 800-821-1121 or service.repair@lectrosonics.com
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In theory, theory and practice should be the same. In practice, they are not.
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