Pioneer CT-70R Service Manual page 35

Test tape STD-608A (NORM) Test tape STD-603 (CrO,)
63k 10k
Test tape STD-603 (CrO, )
DOLBY NR switch C type ON
Fig. 10-16 Permitted recording/playback frequency Fig. 10-17 Permitted recording/playback frequency
response zone (NORM) response zone (CrO,)
6.3k 10k
Fig. 10-18 Permitted recording/playback frequency
response zone (METAL)
45