cdm1550

smallguy · Post by **smallguy** » Thu May 05, 2005 1:28 pm

do anybody know if the internal speaker can be turned off and on?

jim · Post by **jim** » Thu May 05, 2005 4:02 pm

Yes- by unplugging it from the head's PCB.

thebigphish · Post by **thebigphish** » Thu May 05, 2005 4:14 pm

or, by plugging in an external one.

jim · Post by **jim** » Thu May 05, 2005 5:13 pm

Plugging in an external one does NOT disable the internal speaker.

Al · Post by Al » Thu May 05, 2005 6:02 pm

Yes the internal speaker can be muted....you would program one of the unused I/O pins on the accessory connector for rx audio mute [input]and program another for aux control [output] using toggle mode. Then by connecting the two pins that you programmed above, the internal speaker can be muted by pushing the button(P1 - P4) that you programmed for aux control. Pushing the same button again unmutes the rx audio.

jim · Post by **jim** » Thu May 05, 2005 6:26 pm

That also will mute 1/16 external audio

thebigphish · Post by **thebigphish** » Fri May 06, 2005 5:19 am

...i stand corrected! guess i just never heard the headunit speaker when the loud as hell speakers are plugged in