Pioneer CT-959 Operating Instructions Manual page 16

DOLBY NR & DOLBY HX PRO
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PHONES LEVEL
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B-HEAD SYSTEM
COLeY NA LINE
OPEN/CLOSE TAPE
OFF STRAIGHT GALANCE
PEAK LEVEL CAUBRATION SYSTEM c
PC-OCT AMORPHOUS HEAD
CLOSED LOOP QUAL CAPSTAN
Sancees A
Bas CAWIRATION LeveL
ae ON/OFF am
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The illustration shows model CT-959
DOLBY NR SYSTEMS
DOLBY HX PRO HEADROOM EXTENSION
SYSTEM
DOLBY NR selector
MPX FILTER
For recording FM Stereo broadcasting using Dolby NR System.
Turn the MPX FILTER switch located on the rear side ON. Usually
set this switch to OFF.
FM stereo signals contain 19 kHz pilot signals and 38 kHz
subcarrier signals. Some tuners are affected by these signals,
causing Dolby NR system to malfunction. This will result in treble
failure. To prevent this, turn the MPX FILTER switch ON.
Set this switch to OFF when not using Dolby NR system or when
recording other source than FM stereo broadcasting. No need to
use this switch for playback.
Cassette deck rear panel
MPX FILTER
OFF ON
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