XPR 4550 external speaker

[Max]

I would like to hook up a external speaker on a XPR 4550.
It shows pins 9 and 10 for the external speaker.But i can't find how to disable the internal speaker.
Any help would be appreciated.

Thanks
Max

[RFguy]

It's like the CDM radios, the internal speaker stays active.

If you want to disable the internal speaker, you would need to physically disconnect the speaker inside the control head.

[Max]

Thanks for the info,i was kinda worried that might be the case.

Max

[com501]

On my two radios, when the external speaker is active, the internal speaker is automagically disabled by the processor.

[Max]

That's interesting,when I hooked up my speaker tray to pin's 9&10 the internal speaker still works.


Max

[marcosorourke]

I believe there is also a couple of pins on the rear connector to mute the speaker.

[Max]

When I first posted this question I received a few reply's suggesting there is no easy way to disconnect the internal speaker.
The radio will NOT mute the speaker when hooking up a external speaker automatically and when I look at the Rear Accessory Pin Configuration under the help menu in the CPS,it does not show any pins that would be designed to mute the internal speaker when using a external speaker.
As one member posted,you have to remove the head to unplug and disable the internal speaker.
I realize with radio that's full of (Bell & Whistles) such as the Trbo 4550 you would think Motorola would have a easy option to disable it,but there is not.

Max

[com501]

What firmware version are you using?

I'm going to verify this tomorrow at work on the bench, since I have to convert a bunch to remote mount.