[TechAssist] Re: Best way to clean a head.
- From: Dennis Viereck <wa6ati@xxxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Mon, 26 Nov 2001 00:07:23 -0800
I did tests when HI-FI first came out. It really made no difference at all if
the tape was recorded in SP or EP for sound quality. Dynamic range was greater
than 80 db and un-weighted wow and flutter was under .008%. There was no
measurable difference between SP or EP. The HI-FI tape to head velocity is
still 5.8 meters per second.
The only measurable problem I've seen on these machines is tangential
switching noise from time to time. This is caused by a gap between the RF
envelopes between HI-FI head "A" & HIFI head "B". Usually on machines that are
worn.
Don't sell VHS HI-FI short. It is very close to CD quality.
Dennis
Ledstiles@xxxxxxx wrote:
> In a message dated 11/25/2001 11:44:38 AM Pacific Standard Time,
> jeff@xxxxxxxxxxxxxxxxxx writes:
>
> <<
> > there....the hi-fi audio quality is actually better in most
> > cases @ EP (slowest speed) because due to the rotation of the
> > head drum, it is the same direction of the tape path; so if
> > you slow that down to EP, the tape of course then is going
> > slower therefore the 'writing speed' is increased. It is
> > usually not noticeable to ears since the audio specs are so
> > good to begin with, but it does show on paper. Usually ab >>
> I don't buy it. audio quaility is always better in sp speed vers ep speed.
> Larry
> N.C.S.
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