IMHO (and friend's) opinion of acrylic platter


Hello all...

In my quest to tweak my system for a better possible sound...  

I have gone through the latest item for review, inspection and opinion. I picked up an acrylic platter for my Dual 1219 with a Grado Platinum 1.  

Going in, I was highly skeptical and my skepticism was aligned with a myriad of opinions out their on the net. Such as snake oil, yes, no and every variable opinion possible wedged within.  A discussion happens...yet, not quite like when someone asks about "cables".

I set out to give the best subjective platform for the "test".  I called in a friend of 38 years...who is a musician who is gifted with perfect pitch...and not saddled with tinnitus, like me. He is also a luthier as as well...who knows, on a retail, musical and technical level, the best sound possible...and what to listen for...and how.

I set the volume at a reasonable level, placed him in the sweet spot 'tween the speakers...me to his left. I sought  an album we were both very familiar with...one of the most sonically perfect and best produced albums ever... Steely Dan's "Aja".

We started without the platter for "Black Cow".  We sitting respectfully poised, solemn, quiet and with bowed heads carefully and methodically listened and took in as much musical and sonic information our minds and ears could handle.

When done...I asked him to step away...not wanting his to see what I was going to do...I placed the acrylic platter on...and set every up as before.

I started it again.  5 seconds in...we both had an opinion...and we needed to vocalize it... YES...there was a difference and we agreed there was a bit more bass and it was a bit more defined. We listened through the second spinning (with platter) pass at "Black Cow"...and we agreed there WAS indeed a difference.

So...trying to give the situation the best chance to prove us wrong...I sent him away again...removed the platter...ands ran through "Black Cow" a third time.  A scientific  "A-B-A" test.  At he end of the third spin...we were confirmed...  I showed him what the "change" consisted of...and he was very surprised. 

Yes...the platter did administer a subtle, yet still distinct change to the sound.  I didn't want to believe it...but I could not reasonably disagree with what I heard; neither could my friend.

On a technical level...I cannot explain it... Perhaps it was the materials in the platter that affected the relationship between the cartridge, platter, album...with resonance or rumble...wow/flutter?  I dunno.  Or...since the album is sitting 3mm higher, perhaps it has something to do with the VTA setting...making the stylus' relationship with the groove different...or...more like the VTA when the album was originally "cut" on the "master".

I would enjoy responses...

What a hobby!!

Thank you!

Sincerely,

vinylspin
vinylspin
Maybe you have spent your life listening to mass loaded, overdamped tonearms and spherical stylii? I'm not trying to be insulting. I'm just wondering what could cause you to make such an outrageously silly statement.

Yes, you are. Deliberately insulting. And no, you're not wondering, not at all. Because I stated very clearly exactly what my opinion is based on. A demo conducted in person and before a large group of audiophiles.

Not my fault your experience has been with platters not very far apart in performance. It is however your fault that you choose to ignore everything I said in order to throw your shamelessly gratuitous insult my way.

Sorry, but I'm developing quite a low tolerance for arrogant ignorant wanna-be posers these days. Hope your ego got a nice little shot out of it, its the last comment of yours I'll be reading. Hope it was worth it to you. Bye!
Just to clarify you added a 3mm acrylic turntable mat and did not actually replace the entire platter is how I read the description.  That would be equivalent of lowering the tonearm pivot 3mm and could easily account for the changes you enjoyed.  If there is any VTA/SRA adjustment on your tonearm it would be enlightening to raise the tonearm pivot the same 3mm that is added to the platter (tonearm in same degree of level in both scenarios) and you might have additional insight as to the benefit of the acrylic mat.  So much to try and enjoy in this hobby.  
Hey uberwaltz, you never apologized for insinuating that I was degrading everyone's system when I was rather obviously not. 

It does not matter what the platter is made of as long as it does not ring. 
Any sonic changes are more likely due to changes in SRA, Azimuth and overhang.