Product Family - audio other

3M Audio Mastering Tapes

Recording time (one direction)

TAPE SPEED IN INCHES PER SECOND

(Hours: Minutes)

Tape Length Nominal Backing (mils) Reel Size

15/32 ips

15/16 ips

17/8 ips

3 3/4 ips

6.9 ips (17.5 cm/sec)

7 1/2 ips

13.8 ips (35 cm/sec)

15 ips

27.6 ips (70 cm/sec)

30 ips

600

1.5

5"

*

*

*

:32

*

:16

*

*

*

*

900

1.0

5"

*

*

*

:48

*

:24

*

*

*

*

1200

1.5

7"

*

*

*

1:04

*

:32

*

:16

*

:08

1800

1.0

7"

*

*

*

1:36

*

:48

*

:24

*

:12

2500

1.5

10 1/2"

*

*

*

2:13

*

1:06

*

:33

*

:16

3600

1.0/1.5

10 1/2"

25:36

12:48

6:24

3:12

*

1:36

*

:48

:26

:24

4800

1.0/1.5

10 1/2" / 14"

*

*

*

*

2:19

2:08

1:09

1:04

:34

:32

5000

1.5

14"

*

*

*

4:26

*

2:13

*

1:06

*

:33

7200

1.0

12 1/2"

*

*

*

*

3:28

3:12

1:44

1:36

:52

:48

9600

1.0

14"

*

*

*

*

4:38

4:16

2:19

2:08

1:09

1:04

 

Key to table
Speeds at which tape will most likely be run are in Black.
Speeds at which tape might be run are in Red.
* Tape not likely to be run at this speed (possible, but not probable).
# - DASH format speeds for 44.1kHz sampling frequency
Length in feet
Speed in ips
Time in minutes

To convert any footage to time, use this formula:
Time = ( Length * 12 )    /   ( Speed * 60 )

3M Audio and Video Division 3M Center Bldg. 223-5N-01, St. Paul, MN 55144-1000

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©3M 1993 84-9811-4363-3(93.1)R2

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