Constand buzzing sound

[adrianp89]

There is a 1" speaker behind the helm that all it does is making buzzing noise when the battery is on. Does this do anything besides annoy me and drain the battery or can I rip it out?

 

[jcyamaharider]

It is supposed to be your alarm buzzer.

 

[adrianp89]

It is supposed to be your alarm buzzer.

So this also makes the annoying sound when I first start the boat, and my depth alarm?

I guess I can wire this into the ignition so it only has power then.

 

[Mainah]

It is a 12 volt buzzer that should only emit noise when +12 is applied. The most likley cause of the constant buzzing is EMI of some type. Perhaps unshielded speaker, vhf, or amp wires running close to it or the wires feeding it along the harness path?

As for the shrill beep at start up or orther alarms it is intended to produce I came up with the shrill to chill mod that modulates the incoming 12 volt signal to it changing it to a beep beep beep. I am working with another member here to improve that mod and hope to offer easy and cost effective kits for that. Should have info on that in a few weeks.

 

[adrianp89]

So is it the same as the alarm? It only makes noise when 12v is on, but has done it since day 1.

 

[Mainah]

Yes same as the alarm and the component is known as a buzzer in electronics terms. 12 volt being on alone should not make it emit noise. It should have to receive its own 12 volt signal. Knowing your backgroud think of like the 12v horn on a car alarm system because it works the same way. Just because the alarm is armed does not mean it makes any noise at all. It must receive its own 12v signal. Sounds like something is amiss from the factory or the buzzzig may be coming from a different component. Tach or Connext are my thoughts on other components that may do that but of course should not.

 

[RadioWaves]

My Shrill to Chill mod was to wrap black tape around the grill of the buzzer, not too high tech but works well