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Machina Dynamica New Dark Matter CD and Blu Ray tray treatment?

This is a set of adhesive-backed thin plastic pieces that one attaches to one’s transport or player disc tray. The disk rests on them during non-spin mode, but presumably don’t touch the applied thin pieces during playback mode. The company says the new Dark Matter pieces reduces background scattered light from reaching the photodetector, thereby improving performance. 

Anyone tried this product? Please specify transport or player if you have and your impressions. 
128x128celander
georgehifi's avatar
georgehifi
10,312 posts
 

Fact! They work far better if you stick them on your forehead.

Cheers George
celander's avatar
celander OP
1,503 posts
 
George, kinda of a cheap shot, don’t you think? I didn’t think you were that petty. 
uberwaltz's avatar
uberwaltz
13,381 posts
 
OP
George can get that way at times
Not much love lost between George and Geoff here.
But GK is a big boy and can stand up for himself quite readily.
I would agree that you may find better effect inside a traditional front loader, that large cutout is exactly where I stuck a load of the NDM.
Please keep us informed
celander's avatar
celander OP
1,503 posts
 
Indeed, Uber, indeed on all points. 
geoffkait's avatar
geoffkait
23,365 posts
 
The NDM needs to be close to where all the action is as the objective is to reduce the power of the scattered light inside the transport compartment below the level that can be detected by the photodetector which is 75% of full reflected beam. It’s more straightforward in front loaders because you can see, as you said the NDM is right where all the action is. However I think as anywhere inside the transport compartment should be OK. The entire transport compartment is lit up with scattered light, even though most of it is invisible.
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