Need a recommendation for a volume control knob please

[Brad Hays]

Complete novice here, and I'm trying to figure out what little volume control knob I need to splice into this wire here...

...in order to control the volume of the speaker on this 2 C cell powered alarm device. This is part of a 2 unit warning system where one box is the motion sensor, and the one pictured is the remote alarm. When viewed from the outside of the box (through the protective vents), the speaker appears to be made of copper foil.

I have no clue what to look for even if the part was described to me, so would someone please be kind enough to provide a link for a small volume control knob I could splice in that would be appropriate for this application. Ideally I'd like to drill a small hole and mount it so the knob protrudes through to the outside of the plastic box.

Thanks!

 

[davenn]

When viewed from the outside of the box (through the protective vents), the speaker appears to be made of copper foil.

This is a piezo buzzer/resonator, not a speaker, depending on how it is driven, a pot may or may not work
you could only but try and see what happens

for a test, just get a 10k Ohm pot



cut one of the green wires and solder one to the centre terminal and the other one either one of the outer terminals ( doesn't matter which)



Dave

 

[Brad Hays]

Thanks for the advice dave that's exactly what I was looking for.

Someone else suggested splicing some fixed resistors inline as well. Would you have some advice as to what type of resistors I should be looking at. I'm not sure how they're measured or what value I should be looking for.

 

[davenn]

Thanks for the advice dave that's exactly what I was looking for.

no probs ... just go with the pot for a start and see if it will even work ... it may not as I said in my earlier post
Being a piezo element, it doesn't behave like a speaker



Dave