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Jun 16, 2019

Wireless Lavelier Mics & S1 Pro | Very Low Output!

Greetings!

We are Theatre/Storytelling collective, and require amplification support for our solo (speech only) performances. 

We own a Saramonic UHF Wireless Lavalier Mic System UwMic9 for video recording. These are the specs:

  • Audio output level -60dBV (mic level)
  • Headphone output level : 30mw (16 ohm)
  • Sensitivity: -95dBm
  • Signal to noise ratio : 70 dB or more
  • Voice delay: 12ms
  • Frequency response: 40kz to 18kHz
  • Distortion: 0.5% or less
  • Spur suppression: -60db

We have used this in the past with professional setups (rented out) with a Amplifier-Mixer-Speaker arrangement.

We recently purchased the S1 Pro to avoid spending on the rentals.

However, when we connect the Receiver out from the Lav System into the S1 pro (via XLR), the output is extremely LOW.

Please suggest the solution to get usable levels.

Cheers!

KC

 

 

 

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May 11, 2020

Re: Wireless Lavelier Mics & S1 Pro | Very Low Output!

Hi KC,

Welcome to the Bose Portable PA Community.

Let's check this in a couple of ways.

  • Connect a wired microphone using an XLR cable to the S1 Pro Channel 1.  You should be able to get a loud output with the volume control at 3:00 o'clock.  You won't get much output below 12:00 o'clock.
    • Looking at the specifications and the owners manual for the UwMic9 receiver it appears that the output is -6 dB lower than a Shure SM58 hand-held microphone. Based on that, I'd expect you would have turn up the volume louder than a Shure SM58.
    • Don't be surprised if you have to turn up the volume up to 3:00 o'clock or higher.
  • Use this cable (supplied with the microphone system)

    • Connect it to the S1 Pro Aux Input.  You won't have tone controls, but this will help us to tell if the S1 Pro is working correctly.
  • Have you tried using this cable (supplied with the microphone system)

    to a different powered loudspeaker or mixer?


ST

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Jun 16, 2019

Re: Wireless Lavelier Mics & S1 Pro | Very Low Output!

Dear ST,

Thank you for your prompt response!

I have connected the XLR out of the UWmic 9 receiver to both the inputs of the Bose SE pro. Even on close to full volume, the output is barely sufficient - it's close 15% of what it gives when used as a Bluetooth speaker. I haven't tried the 3.5 output into the Aux Input. Will try & get back.

I have used the same XLR out (from the UWmic 9) into a traditional mixer-amplifier & then to a passive/active speaker with very good results.

I think the mic level output needs a pre-amp before it is inputed into the Bose S1. What is the recommended  level for the XLR/Line Inputs?

Cheers!

KC

 

 

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May 10, 2018

Re: Wireless Lavelier Mics & S1 Pro | Very Low Output!

I've found that I usually cannot get enough level from my dynamic microphones when plugged directly into the Bose S1 Pro (Shure SM58/Sennheiser 835).

This tells me that the Pro doesn't provide the amount of input gain that most other systems do.  That's another reason I use a mixer for gigging with my S1s (along with usually needing more than 2 input channels).

An inline preamplifier designed for lavalier microphone use or inexpensive mixer may help you.

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May 11, 2020

Re: Wireless Lavelier Mics & S1 Pro | Very Low Output!

Hi KC,

Thanks for all the great information.

We're still trying to determine if there is a problem with your S1 Pro. Please try connecting a regular handheld microphone (e.g., Shure SM58) directly to the S1 Pro.

Workarounds

Try connecting the Headphone output on the receiver to the S1 Pro. You can try this cable:

Try a cable like this

Hosa CMP-153 3.5 mm TRS to Dual 1/4" TS Stereo Breakout Cable, 3 Feet

Connect the 1/4 inch plugs into S1 Pro channels 1 and 2.

How does that sound?

ST

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Jun 16, 2019

Re: Wireless Lavelier Mics & S1 Pro | Very Low Output!

Dear ST,

I did try the following:

1. Connected a wired Dynamic Mic Handheld. Output: Decent!

2. Conncted the 3.5 out of the UWMic 9 receiver to the AUX input of the S1 Pro. Output: Negligible!

I shall try the headphone output of the UWMic 9 receiver to give input into the S1 Pro. 

Thanks

KC

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May 11, 2020

Re: Wireless Lavelier Mics & S1 Pro | Very Low Output!

Hi KC,

KC posted:

Dear ST,

I did try the following:

1. Connected a wired Dynamic Mic Handheld. Output: Decent!

Okay - that suggests the S1 Pro is okay. However, there are a few more things we can try.



2. Conncted the 3.5 out of the UWMic 9 receiver to the AUX input of the S1 Pro. Output: Negligible!

Thanks for checking that.

Try connecting your phone headphone output or computer tablet headphone output to the Aux input. 



I shall try the headphone output of the UWMic 9 receiver to give input into the S1 Pro. 

Thanks

KC

Please try connecting headphones to the UWMic 9 receiver headphone output too.

Please try fresh batteries in the transmitter and receiver.

Thanks,

ST

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Re: Wireless Lavelier Mics & S1 Pro | Very Low Output!

Dear ST,

So I thought maybe the signal from the UWmic 9 is too weak to drive the S1 Pro and therefore putting a mixer with preamps in between might do the job. I was thinking of a Yamaha MG06 or Behringer Xenyx 1002b. 

What do you think about this?

Cheers!

KC

 

 

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Re: Wireless Lavelier Mics & S1 Pro | Very Low Output!

I don't know about the Yamaha but I love my little Behringer 1002b -- and it'll run on three 9v batteries (I use rechargables from EBL) including providing phantom power that I've used to power a Neuman KMS105 and at another time TWO AKG C1000s.

And it's around $100...

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May 11, 2020

Re: Wireless Lavelier Mics & S1 Pro | Very Low Output!

Hi KC,

KC posted:

Dear ST,

So I thought maybe the signal from the UWmic 9 is too weak to drive the S1 Pro and therefore putting a mixer with preamps in between might do the job. I was thinking of a Yamaha MG06 or Behringer Xenyx 1002b. 

What do you think about this?

Cheers!

KC

 

 

Before you spend any money on more devices, have you tried these ideas?

Connect your UWmic receiver headphone output to the S1 Pro Aux input.  (to confirm you are getting a good signal through the UWmic system).

Connect headphones to the UWMic 9 receiver headphone output. (to confirm you are getting a good signal through the UWmic system). 

Please try fresh batteries in the transmitter and receiver.

Also, can you move the microphone closer to the vocalist's mouth?

ST