Last night I removed the CDM9 Pro transport from my CD Player and was amazed to
find that when I shook it, it sounded completely different from the CD
transport I took out of a cheap Aiwa.

It had a less plastic sound and I concuded it was because it was partly made of
metal.

Can anybody confirm that CD mechs do sound different or am I alone on this?

My 6 year old daughter could also hear the difference even under blind
listening tests at a distance of three and six foot. I have made a tape
recording which I can supply if anybody is interested the cost is $10.00.

When I connected my scope to a high quality microphone the scope also showed a
difference in the wave form. Conclusive proof I think that CD transports DO
sound different.

On 02 Sep 2003 22:41:32 GMT, (Derbydrummer)
wrote:

Last night I removed the CDM9 Pro transport from my CD Player and was amazed to
find that when I shook it, it sounded completely different from the CD
transport I took out of a cheap Aiwa.

It had a less plastic sound and I concuded it was because it was partly made of
metal.

Can anybody confirm that CD mechs do sound different or am I alone on this?

Ha ha, very funny, and the last resort of a lost argument........
--

Stewart Pinkerton | Music is Art - Audio is Engineering

In article ,
Derbydrummer
wrote:
Checked the dig out signal on three decoders and they were all
different. The SAA7310 had some nasty high frequencies on it that can be
reduced by resampling But resampling has the usual problems. The worst
was the SAA7310 and the best was the SAA7327.

Are these specific chips (ICs)? If so, I would assume that the actual
performance would depend upon the board/track layout, connected devices,
power lines, etc, and I'd assume you'd have to say more about these for
your comments to be in relevant context. In addition, the effect of "high
frequencies" will presumably depend upon their details.

I'm afraid I don't know what you mean in this context by resampling "has
the usual problems".

Can you explain in more detail?

If anybody knows a good site about SACD it would be of interest. So I
can find out where the dig out can be located.

I'd also love a properly calibrated measured spectrum of SACD output up to
and beyond the nominal bitrate.

Slainte,

Jim

--
Electronics http://www.st-and.ac.uk/~www_pa/Scot...o/electron.htm
Audio Misc http://www.st-and.demon.co.uk/AudioMisc/index.html
Armstrong Audio http://www.st-and.demon.co.uk/Audio/armstrong.html
Barbirolli Soc. http://www.st-and.demon.co.uk/JBSoc/JBSoc.html

goto sony.com


"Jim Lesurf" wrote in message
...
In article ,
Derbydrummer
wrote:
Checked the dig out signal on three decoders and they were all
different. The SAA7310 had some nasty high frequencies on it that can be
reduced by resampling But resampling has the usual problems. The worst
was the SAA7310 and the best was the SAA7327.

Are these specific chips (ICs)? If so, I would assume that the actual
performance would depend upon the board/track layout, connected devices,
power lines, etc, and I'd assume you'd have to say more about these for
your comments to be in relevant context. In addition, the effect of "high
frequencies" will presumably depend upon their details.

I'm afraid I don't know what you mean in this context by resampling "has
the usual problems".

Can you explain in more detail?

If anybody knows a good site about SACD it would be of interest. So I
can find out where the dig out can be located.

I'd also love a properly calibrated measured spectrum of SACD output up to
and beyond the nominal bitrate.

Slainte,

Jim

--
Electronics
http://www.st-and.ac.uk/~www_pa/Scot...o/electron.htm
Audio Misc http://www.st-and.demon.co.uk/AudioMisc/index.html
Armstrong Audio http://www.st-and.demon.co.uk/Audio/armstrong.html
Barbirolli Soc. http://www.st-and.demon.co.uk/JBSoc/JBSoc.html