| AUDIOTAPE SPEELDUUR OMREKENTABEL| Tapesnelheid in cm/seconden | 4,75 | 9,5 | 19 | 38 | 76 |  | Tapesnelheid in inch/seconden | 1.875 | 3.75 | 7.5 | 15 | 30 |  | Lengte van tape  in: 
 feet             meter
 
 | Speelduur in minuten: |  | 600 | 183 |  | 64 | 32 | 16 | 8 | 4 |  | 900 | 274 |  | 96 | 48 | 24 | 12 | 6 |  | 1200 | 366 |  | 128 | 64 | 32 | 16 | 8 |  | 1800 | 549 |  | 192 | 96 | 48 | 24 | 12 |  | 2500 | 762 |  | 266 | 133 | 66 | 33 | 16 |  | 3280 | 1000 |  | 350 | 175 | 87 | 43 | 22 |  | 3600 | 1097 |  | 384 | 192 | 96 | 48 | 24 |  | 3750 | 1143 |  | 400 | 200 | 100 | 50 | 25 |  | 4600 | 1402 |  | 490 | 245 | 122 | 61 | 30 |  | 5000 | 1524 |  | 533 | 266 | 133 | 66 | 33 |  | 7200 | 2195 |  | 768 | 384 | 192 | 96 | 48 |  | 9700 | 2957 |  | 1034 | 517 | 258 | 129 | 65 | 
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