NX 5700H question about speaker setup

[Ofdpt23]

Hello. I am currently in the process of programming new fleet radios in two of our ambulances. the way the radio is currently set up in the truck is there is dual heads, one in the cab, and the other in the back of the ambo. I am trying to set it up so when the EMT in the back is giving a report, the driver can monitor the transmission as they are speaking. I have figured out how to get it do so such, however when volume on either control head is turned up, it creates a great deal of feedback. This is somethign we have not had issues with on our other trucks. Am I missing something in the settings? Attached to this fourm post is a screen shot of the section of the programming software in which deals with this topic. Any feedback would be greatly appreciated. thank you

 

[kd4efm]

Only had a short review, is the speaker pointed towards the talk-thru window?? if so, relocate the speaking in the front.

 

[ramal121]

Evans is correct. Isolation between the speaker and mic is the best bet. Besides relocating the speaker you can look at settings for the microphone in the Audio Profile. It has provisions for mic gain and there is other stuff in the Active Noise Cancelation section that may help. I couldn't give you a lead though as I haven't played around in that section much. Advice, save the default settings in case you really booger things up.

 

[Ofdpt23]

I will definately look into this. Thank you for replying. These nx radios are upgrades from what was in here before ((I wanna say tk-790ish)). When we had those radios in here, we didn't have that sort of feedback. The external speakers are in close proximity to where the mic is. If push comes to shove, I'll just deactivate the monitoring when transmitting and let that be that.

In unit 1, the front speaker is between the dash and the switch console (pointing towards th e dash). Rear speaker is on the driver side wall pointing towards the door.

Unit 3, the fro t speaker is located down by the passenger side legs pointing towards the door. Rear is the same as 1 above.

Again, I will look into the advanced audio settings and active noise canceling mentioned before, and ill compare with the programming from the older radio. Perhaps I can come up with a solution.

Thank you.

 

[Reelfishguy]

The TK-790 radios had noise cancelling microphones