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SACD or DVD-A

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Old 06-28-2004, 06:16 PM
  #12  
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^^^^^^ISN'T THIS POST ABOUT AUDIO?

You have every right to not care about the DAC, but why are you bothering to post on a SQ thread anyway? [img]graemlins/dunno.gif[/img] [img]graemlins/jawdrop.gif[/img]

You are so right, many plebians out there would rather have a Dolphin, Britney Video, Game or Movie playing on their headunit -- but this isn't Toys-R-US -- it's a thread about AUDIO for people who like to listen to AUDIO.

I mean isn't it time for your nap or something?
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Old 06-28-2004, 07:11 PM
  #13  
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I've got a couple of things to say.

First, there is information above our "human" hearing range that IS worth reproducing. In itself, a 25khz tone isn't audible. But when a 25khz tone, and a 18khz tone are combined and play simultaineously, a 7khz sub-harmonic is created. There isn't a lot of energy up there, but it does exist, so having the capability to reproduce this accurately does make the sound more "real"

Second, as a general rule, the wider the bandwidth of a peice of electronics, the more stable the unit is within our "hearing spectrum" Being able to reproduce signal up to 40khz for example, indicates that a component has the switching speed and phase response to reproduce minute changes in voltage accurately. While I think it's truely impressive that head units have big voltage outputs these days, it's the units ability to accurately reproduce small changes in voltage that makes it truely high end. (not discounting headroom, just stating that details are more important)

Third, when SACD was intially released (in 97 I believe) there was very little interest in making it a Mass Market Product. It was designed as a premium recording, mastering, and distribution medium. That is, not just the freaking CD boys. Through various industry contacts, I recieved directly from Philips R&D (where SACD was developed in partnership with Sony) a package detailing the entire system. I will repeat for those that don't get what I'm saying. SACD isn't just the CD, it's a coding format very much superior to MPEG or any other coding scheme. The aim of the project was to deliver the same resolution from start to finish, from recording to medium playback (the SACD in your player) Normally, there are steps down in resolution going from recording, to mastering, and finally to CD. DVD-A is a distrobution format, not a complete recording, mastering and distrubution format that SACD is. While is does have an impressive amount of technology invested in it, it still has compromises. For those that are curious, I recieved a hybrid 5 channel SACD disk from Philips in 1998. "Surround Sound" SACD does exist, it's just not a mass market thing.

Next....D/A converters subscribe to the GIGO philosophy. There are many steps in the digital signal chain that can add noise, distortion, and shift phase. Digital after all is just a transmission method, and it suffers from all the same evils that analogue does. The difference is that digital offers the ability to transfer exactly what was put into the signal pipeline to the output. Where as, analogue slightly changes the input signal throughout the signal pipeline. So how does digital suffer from noise, distortion, and phase shift? Well, all these artifacts are ADDED to the original signal. Note I said that the original signal was transfered exactly as it enters the pipeline. What is added is clock jitter, high frequency noise, and slight phase delay of the entire signal. Weather any of this is audible is deppendant on the design and construction methods of what comes before and after the dreaded "D/A Chip". So it's not just about the chip....

Lastly, I think the Alpine F#1 gear serves it's purpose perfectly.

1.) It is a high profile brand identifier. People talk about it, and that's free advertising.

2.) It packs a ton of features and technology into a fairly small package.

3.) Alpine recovers it's ivestment by charging large $$$$ for it. After all, it is extremely low volume.

Is it worth the huge price? Depends on weather you can afford it. For some the smile on their face is all it takes....

After all, at the end of the day it's all about how we feel!!

Adam
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Old 06-28-2004, 07:28 PM
  #14  
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One more thing, any CD's that are not recorded, mastered, and transfered to disk using the SACD format, don't take full advantage of it's capability. I'm not saying Dark Side of the Moon masters suck, I'm just saying that they would be better if the SACD medium was used intially to record.

The key difference, is that most all of the DVD-A releases were recorded with this medium in mind. Where as Sony has reached into the "Vaults" and re-released great music with a better medium.


Adam
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Old 06-29-2004, 10:50 PM
  #20  
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No need to feed the world with more useless drivel, especially when it has no basis on anything except theoreticals. Would be nice to blind-test a DAC (matched sets to make it fair, one per side).

-- Have you ever compared DACs? I have, in fact up until 1996 ungrading your DAC was probably the biggest change you could make to your hifi set-up next to changing the speakers. One of my favorite clients used to build his own DACs -- they were amazing.


The fact that I always get hit with he "That's because you aren't all about perfection" crap is quite sad. Come up with something like, say, legitimate info. It would make me sad to know that someone who ISN'T questionably intelligent comes on here, reads this and upgrades their CD player to attain a better sound that simply isn't to be found in a DAC.

-- Adam provided some facts, and I sort of go more with his opinion on acoustics than yours because his personal reference for HI FI does not consist of a surround sound receiver, home theatre speakers and a $39 CD Rom drive.

I have heard it said here before, but I shall repeat it.... just because YOU do not appreciate the difference in an audio format, it does not mean that others can't.

I have had the prevlidge through the years of owning, selling, representing and listening to some of the finest audio gear around. If I could afford it, I would have a pair of Quad 989s powered by a Conrad Johnson MV60SE hooked up to a Quad 99CDP tomorrow. I am not going to curse the fortunate person who does own this gear and say my humble home theatre set-up is "just as good" or call it a system bought by "Daddy's money".
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