[net.audio] CD isolation

oneill@lll-crg.ARPA (Neil J. O'Neill) (02/17/85)

All this talk about isolation was so interesting that I fired up my Sony
D-5 just to test it out.  Picked it up while playing...  nothing.  Shook it
gently...  nothing.  Shook it harder than I thought reasonable prudent... 
nothing.  Turned it upside down while playing (let me see you LP fans
do this one!)... no audible effect.  Oh well, I guess I'll just have to
get a more expensive player if I want to see a CD mistrack :-)

Isn't talking about CD isolation a bit like talking about disk-drive
isolation. At least, in a properly designed player, shouldn't it be?

(by the way, my local (SF Bay Area) Wherehouse sells all of its Pop/Rock
CD's for $11.99 -- a nice trend)

review@drutx.UUCP (Millham) (02/18/85)

> All this talk about isolation was so interesting that I fired up my Sony
> D-5 just to test it out.  Picked it up while playing...  nothing.  Shook it
> gently...  nothing.  Shook it harder than I thought reasonable prudent... 
> nothing.  Turned it upside down while playing (let me see you LP fans
> do this one!)... no audible effect.  Oh well, I guess I'll just have to
> get a more expensive player if I want to see a CD mistrack :-)

Sounds like the same test that I made with my Fisher (can't remember
the model number) It took quite a bang (not bump) to make it
mistrack.

--------------------------------------------

Brian Millham
AT & T Information Systems
Denver, Co.

...!inhp4!drutx!review

rfg@hound.UUCP (R.GRANTGES) (02/19/85)

[]
ahem. my rotten cheap lousy CDP-101 hasn't mistracked, muted, or done anything
other than play fantastically clear music for a year, now. must have a lemon.

-- 

"It's the thought, if any, that counts!"  Dick Grantges  hound!rfg

dave@rocksvax.UUCP (02/21/85)

My Yamaha CD-X1 will play without errors at any angle, even upside down
and will tolerate mild blows to the side of unit without upsetting it.

It really surprised me, especially when it played in OK with the face
of the unit pointing at the floor/ceiling.  I would have though gravity
would have been too hard on the positioning servo.

Dave

arpa: Sewhuk.HENR@Xerox.ARPA
uucp: {allegra,rochester,amd,sunybcs}!rocksvax!dave

terryl@tekcrl.UUCP () (02/23/85)

>All this talk about isolation was so interesting that I fired up my Sony
>D-5 just to test it out.  Picked it up while playing...  nothing.  Shook it
>gently...  nothing.  Shook it harder than I thought reasonable prudent... 
>nothing.  Turned it upside down while playing (let me see you LP fans
>do this one!)... no audible effect.  Oh well, I guess I'll just have to
>get a more expensive player if I want to see a CD mistrack :-)

     Well, consider yourself lucky that you got a very good unit!!! My D-5
(which is the "portable" CD player, which is debatable once you see and feel
how heavy the battery pack for it weighs!!!) also does not mistrack by just
picking it up, shaking it gently, or turning it upside down, but does mistrack
when shaken vigorously. Also, try tapping it when it sits on a solid surface.
Makes mine mistrack almost every time, depending on how hard I tap it. But
since I bought it basically as a home and office unit, and don't plan on
using it too much as a portable (except on plane or train rides; sure beats
the garbage they put on planes as audio, not to mention much better audio
tonal quality).


					Terry Laskodi
					     of
					Tektronix

david@daisy.UUCP (David Schachter) (02/27/85)

Terry Laskodi remarks that s/he will use the Sony D-5 on planes.  This brings
up a question: can the D-5 legally be used on an airplane?  I'm sure it
falls under the FCC description of a computing device and the FAA and the
airlines have nasty rules about using gizmos that might interfere with the
radio navigation equipment.  (If this topic has already come up, I beg your
pardon.  Please merely send me the answer or a pointer to it.  Thank you.)
                                         -- David Schachter

B.T.W., I am a satisfied D-5 owner.  It has a few minor problems but the sound
quality beats my late-model Sony Walkman to pieces.  More importantly, there
is no maintenance (head cleaning) and no wear on the medium.