[net.audio] cassette head demagnetization

burris (10/30/82)

#R:hp-pcd:2300001:ihlpb:4000010:  0:834
ihlpb!burris    Oct 29 10: 6:00 1982


Tape head and guide demagnetization benefits both record and
playback. If you demag. a machine that has not been done in a long
time you will probably not notice much difference in your older
tapes. They very likely have a deteriorated frequency response and
noise level due to partial erasure of the tape from the magnetic
fields. Your new tapes will be protected against this problem if you
demag. the machine regularly. You should notice an improvement in
recently recorded tapes if they have not been used too many times in
the magnetized machine. New tapes will maintain their frequency
characteristics longer and sound better, especially on the high end
of the audio band. The machine will also be able to reproduce these
frequencies better without all the stray magnetic fields.

	Dave Burris
	ihlpb!burris
	BTL - Naperville

ARPAVAX:arnold (11/04/82)

I never trust statistics about "what the human ear can hear".  I found
out very young that there is no standard that works.  I figure they must
be testing 40 year old males or some such.  When I was a child, all my
friends could hear the TV whine, something most adults couldn't hear.
As I've grown older, many of these same people have lost the ability, but
I can still hear it.  I don't know how many more years that will last, 
although I've never found anyone over 53 who could still hear it.  Now,
those people out there who believe that certain levels of accuracy/
reproduction/distortion are pointless to measure shouldn't let themselves
be fooled by official statistics of what humans can and can't hear.
If YOU can't hear it, don't spend the money.  But those of us with
more sensitive ears ought to be left alone to our mania.
		Not afraid to sign my name,
		Just afraid to listen to the key-clicks
			Ken Arnold
P.S.  This is not to claim that all people who run after the latest and
"greatest" audio reproduction are just poor, misunderstood, sensitive
souls.  But if it weren't for the egoists, there wouldn't be a big
enough market for the manufacturers.s