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. 
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Showing 30 responses by celander

Geoff, thanks for sharing your link to the NDM white paper. Most interesting read that makes a lot of sense.
I’m well aware. 

I’m surprised that Tweak1 didn’t make the first post here. He’s posted the identical rave posts on several other threads. 
And I’m sure there is synergy between these magnet-backed whiteboards and the New Dark Matter discs. But should not the Whiteboards be Blackboards?
Created this thread for You!  Hopefully all of your NDM posts can get sucked into the black hole of this thread. 
Tweak1, when unrelated posts make their way into threads, moderators might view them as spam and remove them.
For those who have tried the NDM thingies, are you using a front-loader or top-loader? Any above-disc clapping being used? 
Yeah, I worry about using these thingies in a magnetically-clamped top-loader set up. Seems like doom and gloom would arise. This sort of post should cause Geoff to arise and speak about the perils.
Geoff wrote “>>>You worry too much. NDM is not magnetic. Why would you think it was? Fear of the unknown?”

Did I say that your adhesive plastic thingies were magnetic? Seriously? (smh)

My fear is having my CD’s torn up by contacting cheap adhesive plastic pieces in a top loader platform due to a magnetic clamp being on top of the CD. Fear of the unknown is not a fear. Fear of the realistically possible is however. 
Folks, enjoy the thread for as long as it lasts. I’ve gotten my Q’s addressed, including some snarky replies from the manufacturer. 
I know it’s challenging for some to properly spell a user name.  But when one does it repeatedly with different misspellings, I do start to wonder if the intent is to be mean. 
Yeah, I admit that there seems a lot of merit to this kit after having read additional info from Geoff’s website. 
Looks like a simple misdirect to an incorrect webpage link that’s an easy fix. In any event, the website instructions request the potential buyer directly contact Geoff with a list of desired products so Geoff can generate a PP request for payment.
In any event (yeah, I know, a pathetically uncreative choice of words for a follow-up post), his A’Gon ad ordering platform works like a charm. I plugged in an order to try with my Oppo SE-83 Blu-ray player (front loader).
Well, they are directional, aren't they? Top surface absorbs; bottom surface does not. Lol
So I received the kit in the mail over the weekend. I was going to initially use the kit with my Oppo Blu-ray SE-83 front-loader player. I bit the bullet and applied the kit to my Jay’s Audio CDT2 MK2 top-loader CD transport instead. The listening sessions are ongoing.
I’ve detected little change in SQ when the thin NDM discs are applied to the top loader surface. The top loader has nearly a 100% surface of uniform blackish grey color. Only the spindle and laser track cutout (only narrow enough to accommodate the laser assembly track) is “open” area to the inside of the transport. I’ll remove the disks after a few listening sessions to see whether the SQ changed.

I strongly suspect these NDM discs will work better at improving SQ for a front loader, as the typical CD tray has a huge cutout upon which the CD sits on the perimeter. I’d imagine all the laser light reflections, deflections and diffractions are escaping though that large cutout gap in the tray and bouncing off interior electronics boards inside the player. I’ll be testing my Oppo front loader Blu-ray player with these NDM discs next.
George, kinda of a cheap shot, don’t you think? I didn’t think you were that petty. 
Looks like roughly 10 small squares applied. A bit higher than your magic number of 8. 
I’ll affix 1-2 more nearer to the laser assembly track. Let’s hear how that sounds....