Plate Reverb pickups

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Tangent; maybe covered already and dismissed, and I missed it.  These look interesting and possibly useful for new plate builds.

http://www.daytonaudio.com/index.php/loudspeaker-components/loudspeaker-drivers-by-series/exciters.html
 
emrr said:
Tangent; maybe covered already and dismissed, and I missed it.  These look interesting and possibly useful for new plate builds.

http://www.daytonaudio.com/index.php/loudspeaker-components/loudspeaker-drivers-by-series/exciters.html

Looks interesting, may be a good option for me instead of my rigged-up driver I have now. This one looks the most interesting to me but Im not sure about the specs.
http://www.daytonaudio.com/index.php/loudspeaker-components/loudspeaker-drivers-by-series/exciters/bct-2-45-x-25mm-bone-conducting-transducer.html
Anyone listen to the examples?
 
The larger voice coils have lower frequency response and resonance points, where documented.  That obviously changes once mounted.  Reverb is primarily low frequency in nature, so low handling seems important.  The unit you pointed out does not go terribly low on paper, but the response is listed for bone conduction.  The plate will have it's own resonance point, like any vibrated surface, to interact with the driver itself.  One conflicting difference between these and the typical reverb driver is the surface area these larger drivers use, which I imagine would tend to damp the plate.  The tapering drive cone that attaches to the Ecoplates I have minimizes the contact point relative to the actual VC diameter. 
 
emrr said:
The larger voice coils have lower frequency response and resonance points, where documented.  That obviously changes once mounted.  Reverb is primarily low frequency in nature, so low handling seems important.  The unit you pointed out does not go terribly low on paper, but the response is listed for bone conduction.  The plate will have it's own resonance point, like any vibrated surface, to interact with the driver itself.  One conflicting difference between these and the typical reverb driver is the surface area these larger drivers use, which I imagine would tend to damp the plate.  The tapering drive cone that attaches to the Ecoplates I have minimizes the contact point relative to the actual VC diameter.

Think this may be a better option in regards to frequency response? I could quite possibly make an adaptation to narrow the surface area that comes in contact with the plate as long as it wouldn't affect the sound too much. I know its a longshot, but do you have a measurement for the point at which the drive cone touches the plate?
 
I can't easily get into one for a look.  I'll see if I have any pictures that might give an idea. 
 
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