On Sun, 10 Jan 2010 20:30:46 +1100, "Trevor Wilson"
wrote:

**Let me go back to the original claim:

**If you REALLY want to laugh, look at a 7kHz square wave from a CD player
(even 5kHz is barely passable from most CD players). A good R-R or high end
vinyl playback can do a MUCH better job.


Ok, I'll bite. Here's a 7kHz square wave as produced by a CD.

http://www.soundthoughts.co.uk/look/7ksquare.png

I'm not laughing - I call that a pretty damn perfect piece of audio.

Meanwhile, the nearest I could find for a cartridge was this at 1kHz -
an immensely easier job, and yet still barely handled by a V15.

http://gallery.audioasylum.com/cgi/v...&w= 641&h=607

I'm going with the CD, thank you.

Meantime, will you please post your 7kHz vinyl waveform? I need to
make a true comparison.

d