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

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. 

I’m waiting for the usual suspects to surface...

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?

It seems to me the product name is apt.

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.

Seems like Geoff should chime in here. A lot of Q’s remained unanswered. 

Geoff, Thanks for your response. I’ll pass on this tweak. 

The difference George is that he doesn’t believe in his own snake oil. 

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. 

Thanks for your reply!

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. 

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

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. 

I’ll share a pic of the top loader application. 

Indeed, Uber, indeed on all points. 

https://photos.app.goo.gl/YWqJjRJ9MeW9DLVc7

Rectangles are roughly the equivalent of 2 squares. 

Looks like roughly 10 small squares applied. A bit higher than your magic number of 8. 

Lol. Geometry redefined. 

I’ll affix 1-2 more nearer to the laser assembly track. Let’s hear how that sounds....

I’m glad falconquest opined about Dark Matter, as opposed to Geoff’s product, New Dark Matter. 

Uber, what? April Fool’s Day isn’t a full day? 🤔

OUTBURSTS ARE CAPITALIZED! ALWAYS!! WITH DOUBLE EXPLANATION POINTS!!

Just affixed two additional small NDM squares to the perimeter boundaries of my Jay’s Audio CDT2 MK2 transport top surface. (Previous modification was not done.) Will report impressions after listening to some music.

My listening evaluations are finished. I’m without words: just let me say this is the greatest improvement in my audio system to date. More so than anything other than exchanging loudspeakers, which is more about flavors than realism. Greater microdynamics, seemingly purer sonics and dimensionality. 

Geoff, this kit is way too cheap!

And I’m still looking for a new OPPO UDP-205 for $1300...

Nope. Everyday is April Fool’s Day here. 

Geoff, +1. 

I do need more of those double-sided stickies. I plan on testing the NDM product on my Oppo front-loading Blu-ray player. 

Who knew? 🙄😂😂😂

Yep. Marking up some 3,000 CD’s is my version of fun. 

Hmmm...I need new friends, if not old buddies. 

Well, given my limited background about how CD players work (as I am sure Geoff can attest given my questions to him via PM), I’ll take a stab at this answer.

The laser has a different wavelength range than the photodetector, wherein the photodetector can detect both visible and invisible light. As a result, the invisible light (UV and IR) is picked up by the photodetector, thereby obscuring the data stream attributed to the visible light. Presumably, this additional light info might not be corrected by the Reed-Solomon error detection/correction codes.

The NDM squares can absorb the invisible light, removing it from being detected by the photodetector. This improves the fidelity of the photodetector in capturing a better ratio of disc-related reflected light to unrelated reflected light, thereby enhancing the photodetector’s resultant signal to noise ratio. 

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. 

Huh? Call me stupid, but I have no idea what you are talking about.

I bought one of these kits, seeing no harm in trying something so inexpensive that had the potential to improve SQ of my system. Not many tweaks can bring about such improvement for the money expended. So the risk/reward ratio is very high. And if one does not find it to "work" to his/her satisfaction, then it’s not a great financial loss.

But any modification that affects signal processing at the very beginning point of a given source is something that should not be ignored. And the inexpensive cost of the kit makes the decision a low-barrier no-brainer.

I think it’s called deductive reasoning. Something terribly lacking in most every day discussions.

Look at your figure. 

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. 

Because black is within the visible light range rather than the invisible light range. The whole point is to remove the invisible reflected light from reaching the photodetector. Or so your white paper claims.