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- Xref: sparky rec.audio:15508 aus.hi-fi:459
- Newsgroups: rec.audio,aus.hi-fi
- Path: sparky!uunet!spool.mu.edu!uwm.edu!linac!att!att!fang!tarpit!bilver!bill
- From: bill@bilver.uucp (Bill Vermillion)
- Subject: Re: Tape head demagnitizing...
- Organization: W. J. Vermillion - Winter Park, FL
- Date: Sat, 21 Nov 1992 21:08:08 GMT
- Message-ID: <1992Nov21.210808.14874@bilver.uucp>
- References: <1992Nov17.032423.19975@mprgate.mpr.ca> <1992Nov19.151846.5162@tc.fluke.COM> <falcon.722207662@camelot>
- Lines: 40
-
- In article <falcon.722207662@camelot> falcon@camelot.bradley.edu (D. Nathan Hood) writes:
- >In <1992Nov19.151846.5162@tc.fluke.COM> strong@tc.fluke.COM (Norm Strong) writes:
-
- >>The act of recording demagnetizes the record head. If your deck uses
- >>the same head for recording and playback--and if you do plenty of
- >>recording--your heads will never need demagnetizing. Of course, the
- >>capstan and guides might.
-
- >>If you have a 3-head deck, the playback head might very well need
- >>occassional demagnetizing. Just one of the disadvantages of a 3-head
- >>deck.
-
- >what about a two-head (?) deck... separate record and playback... hte
- >playback will be magnetized right??? i always thought that a magentized
- >head just lowers response i don't know if the capstans have anything to do
- >with it... will they change the magnetic coating on the tape??? i have
- >never had this problem but...
-
- A two head deck uses the record head to playback. You have to have a
- separate erase head.
-
- However you can have a 3 head recorder with only two physical heads.
-
- You can have a head with a record gap and a short distance away a
- play-gap. While it physically looks like one head it is two heads in
- one container, as it were.
-
- A magnetized head will partially erase the tape during plaback. It
- may take several plays before noticeable degradation occurs, but by
- then it is too late.
-
- Where you say you thought "it just lowered the response" what is has
- done is erased the higher frequencies. The highest frequencies lie
- solely on the surface of the tape and will be erased first.
-
- --
- Bill Vermillion - bill@bilver.oau.org bill.vermillion@oau.org
- - bill@bilver.uucp
- - ..!{peora|tous|tarpit}!bilver!bill
-
-