Hello guys!
A girl friend of mine wants to attach a bone conduction device on a set of hi-fi headphones, as part of a gadget for therapeutic use that she's attempting to build.
So she bought this transducer from New Zealand (
along with this product brief) and asked my help to make it work.
The problem is, I never worked with this type of transducers before!
Given the fact that she wants to play music with it, I don't know what kind of amplificator can power it (at that impedance!), if a filter network will be required, or even how are the device internals. That " IEC-5" connector also looks fairly obscure for me, so I don't know how to power up the component.
I hope any of you could give me a starting point, it will be immensely appreciated.
Here are the device specifications
Impedance: 68 or 500 ohms (nominal)
Sensitivity, free air: 100mW for 0.2G at 500 Hz
Perceived sensitivity: 25mW for 110dBSPL
Max input power (continuous): 250mW
Max input power (50% duty cycle): 500mW
Frequency response: 400 - 14000 Hz, refer graph
Connector: IEC No. 5 polarised or non polarised
And the frequency response curve, finally something familiar to me.
View attachment 68530
Thanks in Advance