hi guys,

i got a mp3 soundtrack module (FN-BC04) hooked up onto my MS-5UD3 panel but it looks like its crashing the audio output via its speaker terminals, however, it works and functions fine with the audio jack output. I also connected a speaker amplifier rated at 12-24v dc on the panel's aux power which didn't seem to work at first either and magically ended up frying it moments later.

the mp3 module idea was inspired by a fire alarm enthusiast seen on this video in which he managed to get the module working on his ms-10 panel:

https://www.youtube.com/watch?v=Ss2VUDqjWAA&t=29s&pp=ygUbdm9pY2UgZXZhYyBmaXJlIGFsYXJtIHBhbmVs

It seems that the MS-10 and the MS-5UD share the same characteristics, even its manual.

According to my panel's manual, the aux output on the panel is 24v dc. I've made sure to check the output current with a multimeter and turns out that its outputting 27-28v which may be the culprit to my issues. I'm not sure if this is normal but any ideas on adjusting the output voltage or workarounds perhaps?