Wurlitzer 200A microphonic

[Cookymonster]

Hello .  My first Wurlitzer plays quite nice.
It has a Vintage Vibe amp with FX loop.
Nothing seems wrong with the mechanisme.
The only thing that is annoying is the constant ringing of the harp.
The pickups seem to pick up the resonance of the harp and mechanism.
There is always an Eb coming through with every key played.
The same Eb you hear when tapping the harp.
So no issue with some key  damper.
Is it something "normal" we have to accept from the Wurly design.
Or is it a question of microphonics that shouldn't be there.

Thanks .

[pianotuner steveo]

No, it is not normal. Double and triple check every Eb damper. It is very likely one is not seating properly. Sometimes the felt gets crusty and squeezing the felt with needle nose pliers can help.

[Cookymonster]

Thank you so much Steve.
I took your advise serious and checked each damper.
Turned out that some dampers actually were not making good contact.
Especially the low D(!) which was mostly responsible for the ringing (that sounded much more like an Eb in higher register... !).
Strange.  But it was obvious.  I also noticed a more articulate popping sound when tapping the red felts on top of the dampers that weren't making good contact.
So I squeezed the felts and stabbed them with a needle.
Result is a nice sounding Wurlitzer.
I was not  aware of the importance of the dampers that much. They looked OK to me because they seemed to do their thing on the key itself.
Looks like all these small damper felts contribute at dampening the whole harp and mechanism.
So, again Steve, thank you so much for this helpful advise.
Not only this advise, but also lots of others I found on this forum, in your posts.
I learned a lot from the "masters" like you, Ben, Tim, Peter, Sean, Chris, Alan, Jenz, Mike, Dave, ... 

[pianotuner steveo]

Thanks! Glad you found the problem.