>I know this has been discussed before but has anyone actually tried
>to use Betacm SP tapes as audio tapes on pro reel to reel machines
>(Sony apr, Ampex atr, etc)? I know it's a metal tape but can one of
>these machines be adjusted to use this tape? At 15ips it should
>sound good if the machine can be aligned to it, no?
1. My first question is 'why would you want to?' You can still buy
1/2" tape for audio.
2. Your going to take the time to unspool the tape from the small hub
tape reels onto an audio tape reel? That strikes me as labor
intensive and prone to damage the tape.
3. Videotape is not audiotape. One of the reasons the tape is put
into cassettes is that it is much thinner and more fragile than
audiotape. Thinness allows long tape lengths to fit in small
cassettes. It also allows the tape path to be maintained much more
4. Metal videotape is designed for much different frequency
characteristcs than audiotape. Audiotape is formulated for audio
frequencies + a bias frquency (for analog) or a digital signal with
bias for digital. Videotape is designed for a minimum of 13.5 MHz of
frequency response from SPINNING HEADS travelling at 1500 ips+
diagonally across the tape. The two are VERY different types of
I imagine it could work, but I don't imagine it would sound as good
as you think it would, and would be more trouble than its worth.
Senior Systems Administrator
Library of Congress -
National Audio Visual Conservation Center (NAVCC)
Packard Campus for Audio Visual Conservation