graz_lag
Major Contributor
I love Le Mans rillettes de porc , best in France , best in the world.
Naturally, we've been the inventors of Les Rillettes !!!
I love Le Mans rillettes de porc , best in France , best in the world.
Some foil capacitors can be microphonic, what's inside the thing- let's have a look.
I was thinking exactly the same thing. My first thought in the picture was the crystal. Those actually are usually pretty immune to that sort of vibration according to specs. So next I was thinking the analog out connection.My bet is the relay or the crystal oscillators (2).
That's exactly what I was just thinking also. High speed intermittent contact caused by impacts. Not microphonics as such.
Confused. Tapping a solid aluminum case creates a resonance in the low KHz range? And that resonance causes the HP plug to see a rise in a fairly wide spectrum of EM energy? This is not a piezoelectric system. How does that work?
No its far too low a level.Quick question: can you actually hear the taps in the phone output?
In vibration terms an impact is in essence a stimulus at all frequencies (within reason).Confused. Tapping a solid aluminum case creates a resonance in the low KHz range? And that resonance causes the HP plug to see a rise in a fairly wide spectrum of EM energy? This is not a piezoelectric system. How does that work?
No this is not the case. Tried wiggling the headphone connector around and twisting it with no effect. Its a tight fit here. The relay could indeed a good candidate.The signal is interrupted briefly by tapping the unit. Impact induced poor contact. Speaker relays in amplifiers can do the same. Easy to confirm, hardwire to the PCB an external HP jack and test again.