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SMH10 microphone audio level settings

Lu Vencl
suggested this on November 19, 2011 18:17

Some radios have a very sensitive microphone input. Allowing to adjust the levels (via PC or function commands) would be ideal to tailor the SMH10 to match the audio gain needs.

 

Comments

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Sena
Sena Technologies

Thanks for your feedback.

There are three audio levels that you can adjust when you use SMH10 along with SR10- with Two-way radio device.

1) SMH10 Volume (O)

2) SR10 Volume (X)

3) Two-way Radio Volume (O)

Right now, we don't have audio gain control of SR10.

We are considering the feature to adjust the audio gain of SR10 in the next firmware release along with PC software.

 

How about adjusting the overall volume with existing volume control of each device, 1) and 3)?

Any problem in this scheme? Any information would be highly appreciated.

November 21, 2011 17:15
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towpro

I think this user is asking to be able adjust the microphone volume, not the listening volume of any attached devices.

Some 2 way radios can be over driven with too sound level is sent to the "mic input" wire, causing distortion.

November 25, 2011 13:49
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Sena
Sena Technologies

SMH10 mic volume is transferred to SR10 by way of internal amp circuit and then to your 2-way radio device and then to your friends device.

Audio Transmit Gain of SR10 will be configurable from SR10 firmware next version. It will be released soon along with other improvements. Thanks.

November 30, 2011 00:29
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John Robertson

I would like to be able to adjust the balance of the smh10 speaker levels. Can that be added to the little list?

Thanks!

December 27, 2011 23:40
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Lu Vencl
@john. Might want to create a seperate request for the balance control as this subject deals with microphone gain. While on the subject if you have a need to set balance you might have a speaker positioning problem. Try to adjust that first.
December 28, 2011 02:22
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Lu Vencl
I see that ver 3.3 is out for the SMH10 but I don't see any mention of the microphone gain settings in the release notes. Can you confirm?
December 28, 2011 02:23
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Peter Fawcett

I too look forward to being able to adjust the audio transmit gain. I just recently had the opportunity to use my SMH10 with a Yaesu FTM-10R VHF amateur radio and was politely informed by several friends that my transmit audio was running very hot, to the point of distortion. The FTM-10R has limited adjustment capability to back down the gain of the transmitted audio but even at minimum setting it was hot.

This problem did not appear until I upgraded my SMH-10's to v2. The originals worked great. I'm hoping Sena releases the next firmware revision in the very near future as riding season is just around the corner where I live.

February 16, 2012 17:01
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towpro

Peter, are you using the SR10 to interface the SHM10 to the Yaesu?  If yes, you can adjust the audio gain of the SR10 through the software menu on the latest firmware.

I don't own any bluetooth Ham gear, so I might have missed how you interface the FTM-10R to the SMH10 direct.

February 16, 2012 17:53
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Lu Vencl

I personally have not tried

 to SR10 adjustment as I am not sure how to.. Does someone have the instructions?  I went back to using the SMH10 directly to the Yaesu for now as I really miss stereo sound that the SR10 does not offer, so I am hoping for the adjustable mic gain on the SHM10 in the next release coming hopefully soon.

In the meantine, I do want to test the SR10 again with the lower mic output and see how it sounds.

Lu

February 16, 2012 18:08
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towpro

I don't have one in front of me to write a step by step, but

download the software for your computer that allows you to interface with the SR10

http://senabluetooth.com/support/download_document.php

Follow the directions, on the screen I think there will be a button for settings, click it and look around. 

Its been a while since I looked at it, but there is a setting for autio gain and I think it has 3 settings like HIgh, medium and low.

Again, its been since early Jan when I saw looked at the software, but the setting for gain is there.

February 16, 2012 18:57
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Peter Fawcett

I haven't purchased the SR10 yet, was waiting for them to get the gain problem straightened out and add the Bluetooth stereo profile. Right now I adjust the gain using the menus in the FTM10-R. Has anyone tested the SR10, with the latest firmware, to see if it quiets the output audio down to something reasonable? If so, this may be just the time to go ahead and spring for one.

February 18, 2012 13:40
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Lu Vencl

Any word on the "planned" fix in the next release for the adjustable mic gain on the SMH 10?  It has been since November now since I have brought this up and well my patience is starting to question the progress.  An update I believe might be in order now. Thanks

March 26, 2012 20:36
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Sena
Sena Technologies

We have performed feasibility test for mic gain configuration; however, the function significantly affects others since it is quite tricky to find an optimal gain applicable to phone and intercom.

It means if you adjust the Intercom mic gain to certain level, then iPhone Siri or voice command may not work. Definitely, we will try to find a solution anyway and it is to be realized in v4.1.

 

Thank you for your patience.

March 27, 2012 01:25
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Dan Heming

I was finally able to purchase a Sena SMH10 headset which is running the latest V4 software.  I also have the SR10 running ver 1.1 and a Yaesu VX-5R ham radio using the single pin Yaesu cable.  When using the SMH10 & SR10 to talk through the Yaesu radio, I'm getting audio reports that my audio is so high, its distorting to unintelligible levels.  When I'm stopped & not moving, they said its okay (still hot but understandable), but riding along at 25mph+ and something is causing the audio to just overwhelm the radio and every other syllable gets clipped.   At that time my SR10 was set to Med for audio gain.  I've checked the VX-5R manual there are no audio mic settings on the radio I can change, but  I've found a setting where I can set "half deviaton", so that might help some.  I've since changed the SR10 to low audio setting, but I haven't had a chance to try this new setup yet. 

Since you say that adjusting the mic gain on the SMH10 is affecting other things like cell phones and intercom which makes sense, I'm wondering instead of the Low, Med, High settings on the SR10 if you had settings like -15db through +15db or something like that that only affect the 2 way radio mic audio?   We definitely need settings on the SR10 that allow us to "quiet" down or limit the audio for radio's with  very sensitive mic input like it appears most ham radio's do.  I'm guessing a lot of the testing was done with FRS/GMRS radio's which probably have way less sensitive mic inputs.  

I'll report back to see if these new settings make it any better. 

May 06, 2012 21:20