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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. 
celander
geoffkait's avatar
geoffkait
23,365 posts
 
Celander is close. Very close. Yet so far. 😁

Hint - If the laser wavelength was different than the photodetector wavelength the whole thing wouldn’t work. Both have nominal wavelength of 780 nm. 
celander's avatar
celander OP
1,503 posts
 
Well, I derived all that from your website. So I guess you are equally far away.

(Deductive reasoning..)

PM me the quiz answer. I’ve shot my wad on this answer. No do-overs. Thanks, Professor. 
geoffkait's avatar
geoffkait
23,365 posts
 
You obviously misquoted me.

Only quote facts. 😁
celander's avatar
celander OP
1,503 posts
 
Where did I say the laser and the photodetector had different nominal wavelengths? I’m speaking about ranges.

The photodetector must have the ability to detect side-band wavelengths outside the “nominal wavelength.” Otherwise, it could not detect your so-called invisible light. 
geoffkait's avatar
geoffkait
23,365 posts
 
You’re kidding, right?

This is what you said, not me.

”The laser has a different wavelength range than the photodetector, wherein the photodetector can detect both visible and invisible light.”

In any case, you didn’t answer the pop quiz, which is why the color black wouldn’t be just as good as NDM.
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