Differences between cd transports?


Howdy,I borrowed a dedicated CD transport (Musical Fidelity) from a friend. I have found that music sounds much better with his transport than with the CD player I’ve been using to spin CDs. In both cases, I am using exactly the same DAC via the optical out connection from the transport and the CD player. So: is there any rational reason that, using the same digital to analog converter, one CD spinner should sound much better than another?Thanks!  
rebbi

Showing 35 responses by geoffkait

Still waiting for asztell’s video. I’m getting a bad feeling. 😛

mystijin, give me a break! 
Gosh, are all philosophers of science so adept at name calling? What is this, the revenge of the nerds?
Philosophers of science? Sha-zam! So, I you were in the English Department after all. I bet you guys can sure talk some stuff. Do you guys wear, like, robes and stuff?
Physics all the way down? Who talks like that? Oh, I know. An English major. 
Hey, Moops! When did you get out? Thanks for the mention, I’m thinking of promoting you to associate shill.
Wolfie complains about facts. That’s rich. He wouldn’t know a fact if it came up and bit him on the rump.
I never said it wasn’t physical or electrical. But that’s not what you asked. You asked what I meant by directionality. You have to know how to ask the right question. Follow? Besides this has been covered ad nauseam on many many threads. Let your fingers do the walking. 
zimmerma45 posts03-10-2019 6:01pmgeoffkait:
Please explain precisely what you mean when you say that audio wire is "directional."

>>>>>I mean that all wire and cable will *sound better* in one direction than the other direction. This is true whether the wire or cable is in a DC circuit 🔚 or an AC circuit. 🔛 The more wire and cables that are in the correct direction the better the system will sound. What wires and cables am I referring to? Speaker cables, digital cable, interconnects, transformer wire, internal wiring of electronics and speakers, fuses, capacitors, power cords, HDMI cables. All wire and cables.
Well, finally you said something that makes sense. A wire company that makes wire. Well, shut my mouth and call me corn pone. But we were discussing cable companies, whether they made their own wire or not. Which would make it easier to control directionality of wire. Not that it’s terribly difficult in any case. Another obvious way to control directionality is make some interconnects with the first section of wire off the spool and listen both directions. Then you will know the direction for the entire spool. Or, just skip the whole process of controlling directionality and leave it up to the end user to figure it out. Assuming the end user cares, which he probably doesn’t. That’s what most aftermarket fuse companies do.
I don’t believe you. How about them apples? 🍎 🍎 🍎 Even a tiny fuse wire 3/4” long measures slightly different resistance each way. 🔚 🔜

So, you found one cable company that makes its own wire. Big deal. If I even believe that, which I actually don’t.
‘‘Twas not I, Georgie Porgie. Why would I? You’re such an easy target 🎯 Looks like you’re in the moderators’ crosshairs✖️ this time, big guy. I’ll be watching you. 👀
wolf_garcia4,662 posts03-09-2019 3:15amPossible mental health alert: Geoffkait (or Kaitty) has utterly lost his ability to recognize a satirical post, or his reading comprehension doesn’t work if he fails to re-post a comment he’s responding to. I’ll re-post this part for his sake:
"And if all of those little wires and board traces are directional, isn’t the sum of all of it working together resulting in directionality chaos? And if it is, why can things still sound fine?"

>>>>>See, that’s what makes it this all so funny. What you perceive as satire or irony is actually reality. I’m pretty sure we covered board traces and why they aren’t directional in the last class. Your “satirical post” is true, all wires are directional, so ultimately everything should be controlled for directionality. See the irony? 

”And if it is, why can things still sound fine?"

>>>>>>Everything sounds fine to you so what’s the difference? 😳
astelmaszek93 posts03-09-2019 1:56am@geoffkait Since not a single high end wire company I know has an electron microscope and since you freely admit they don’t make their own wire, how would they know the directionality of the cable? Cable is spooled and respooled so many times before it arrives there. Each time this happens, the direction get reversed. I spent my Friday evening playing with cables. I tested Cardas, Kimber, Canare with a $1K Fluke AC ohm meter good to more zeros than would make any difference to a human ear. Zero difference in either direction. None. As in zero difference. Always shows same numbers, down to .5 digits.

Let me guess, the ancient cables weren’t burnt in enough.

Only way to figure out which way the cable was pulled via the dies would be an electron microscope. At one point in my life, I had an Elionix sitting in my basement, but I highly doubt a single cable company would be willing to compromise their marketing department by throwing a cool half a million just to figure out which way the spool was run.

>>>>>Don’t be such a negative Nellie, astromatzl. The reason I use the expression “controlled for directionality” is because cable companies like Audioquest have figured out how to ensure the wires are in the correct orientation when the cable has been completely assembled and the directional arrows have been applied. 🔜 🔜 it’s not really rocket science. 🚀 There are a number of ways to control the whole process, from the time the wire comes out of the final die, to when the wire is put on the spool destined for the cable company. All it takes is a little coordination. The wire manufacturer could mark the end of the wire with red tape to show direction for the entire spool. Or measure the difference in resistance for a length of wire taken off the spool. See if you can guess which resistance value indicates the correct direction. 🔛  In the case of fuses, most are not controlled for directionality so the end user must try the fuse both ways and use his ears.

“Since not a single high end wire company I know has an electron microscope...”

>>>>>Why do I get the feeling you actually don’t know any high end wire companies?
Somebody must have taken his smart pill today. Yes, all wire is directional, internal speaker wire, internal electronics wire, speaker wire, digital cable, interconnects, transformer wire, fuses, capacitor wire, all of it. That’s why many high end cable companies have been controlling directionality for 25 years. That’s also why power cords should be controlled for directionality. And why HDMI cables should be controlled for directionality. Note that fuses and cables and cords in AC circuits are directional.

The more wire you can put into the correct direction the better the system will sound. (It’s quite common for audiophiles to believe their system sounds great. Just an observation.) 😬

Pop Quiz - How many times have I made those comments on this forum before it finally dawned on Wolfman?

a. 5
b. 10
c. 25
d. 100

”No matter how much you have in the end you would have had even more if you had started out with more.”
Thanks for your concern but I’m pretty sure I can handle it. Besides, I haven’t had this much free advertising in months. 
astelmaszek88 posts03-07-2019 1:53pmDude, you sell bags of rocks to attach to interconnect cables. I’m done here. For a while I thought I was just dealing with a few misinformed/undereducated individuals. Now I realize I’m dealing delusions. 

>>>>English apparently wasn’t one of your top subjects in 7th grade.
You’re not paying attention. God gave you two ears and one mouth for a reason. 
astelmaszek83 posts03-07-2019 12:01pm@geoffkait

Take the case for two wires connected to a speaker, + and -. When the current travels toward the speaker on one wire it travels the opposite direction on the other wire. And vice versa.


You have no idea what you are talking about. How do you think the woofer moves back? Which way do the electrons "flow" then? Take a quick look at a audio wave. Ever noticed it has a negative side? It’s called AC for a reason. Ever heard of balanced amplifiers: there is no ground.

>>>>>First of all electrons don’t flow. In an AC circuit electrons are essentially at a standstill. You’re not even warm yet. Nice to see you went to 7th grade. How about 8th grade? Current flow through both + and - speaker terminals. It alternates. That’s why if you reverse the + and - cables the speakers will still play music but Polarity is Reverse from what they were before you reversed + and -. There is no ground. Duh!

“If I could explain it to the average person they wouldn’t have given me the Nobel prize.”
Be careful what you wish for. Besides, aerospace engineers trump electronics engineers.
Look, it’s not rocket science. Take the case for two wires connected to a speaker, + and -. When the current travels toward the speaker on one wire it travels the opposite direction on the other wire. And vice versa. All you care about is the current traveling toward the speaker, so control the directionality of BOTH wires such that the preferred direction is the one toward the speaker. You don’t care about the opposite direction, the one traveling away from the speaker. It’s not audible. The direction toward the speaker is. The same logic applies to a single wire, e.g. fuse in an AC circuit. Raise your hand if you still don’t get it.
Astelmaszek
@geoffkait I really hope the electrician in house didn’t pull NM in the wrong direction.

>>>>My electrician uses a Push Me Pull Me. 🔛 I’m pretty sure now you aren’t gronking what we mean by the word directionality. That’s why you’re still all tangled up. We see this a lot here. No big deal.
Just so there's no misunderstanding fuses in AC circuits and power cords are also directional.  All wire is directional. If you don't know what the word directionality means look it up.
The Nakamichi Dragon CD System exhibited by Mapleshade at CES many years ago had a very unique feature. After the CD was placed on the tray and the CD tray was inserted into the transport the tray was locked in place.  Then a vacuum was created, filling the entire transport compartment. In addition, at the show, the entire 3 piece Nakamichi CD system was isolated on a sub-Hertz platform.
Not the be argumentative but level is critical with or without springs. Obviously springs make it easier to balance and level. I actually distinguish between balance and level, now that you bring it up since you can balance a thing on springs yet not be level. Depends on the underlying surface which is oft not level. Furthermore, the CD level during play is oft times not (rpt not) the same level as the chassis or the tray. Obtaining level of the tray can be a little bit tricky. Finally, Out of level Condition is amplified by out of round CDs.
astelmaszek71 posts03-05-2019 10:03am@geoffkait Cables are directional. LOL. Settling time. I'm in the wrong business but of course I can't bring myself to that level of detachment from reality.

>>>>You appear to be enjoying an out of body experience right now. 🤗
There are quite a few variables that make comparing transports tricky. The spinning disc should be absolutely level during play. When switching transports connecting cables require settling time, maybe a day or two, before judgements regarding sound quality are made. Connecting cables are directional, if in the wrong direction the sound will suffer. Some transports may or may not handle scattered background laser light better than others.