Adjusting The Recording Level; What Is The Dolby Hx Pro System - Sony TC-WR535 Operating Instructions Manual

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Recording (Only on De
Adjusting the Recording Level
The optimum recording level, which differs according to the
tape type, is indicated on the PEAK LEVEL METER for each
tape type.
Adjust the REC LEVEL control as high as possible without
exceeding the recommended range for the tape type being
used.
PEAK LEVEL METER readings by tape type
Recommended maximum PEAK LEVEL METER readings.
Be 30 -20 -10 ~~ oO +4 48
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for Type | (normal) or
Type Ii (CrOz) tape
for Type IV (metal)
tape
Tips on recording level adjustment
Setting the recording level too low will produce a hissing
sound, while setting it too high will produce distortion.
Generally, the optimum recording level for high and low
frequencies is lower than that for middle frequencies.
Therefore, when recording program sources with many high
and low frequencies, you should set the level to a relatively
low position. For even better results, check the recording
results with your own ears.
ni=tere) ce [ale malt Broadcasts with the Dolby NR
System (TC-WR535 Only)
When recording FM broadcasts with DOLBY NR system, set
the FILTER switch to ON.
The multiplex filter eliminates remnants of the 19 kHz stereo
carrier and 38 kHz subcarrier signals which may impair the
operation of the DOLBY NR system. Be sure to turn on the
FILTER switch when using the DOLBY NR system. During
recording with the Dolby NR system, use this switch only if
the tuner is not equipped with its own multiplex filter or the
equipped filter does not function effectively.
12
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What is the Dolby HX PRO system?
The Dolby HX PRO system provides linearity in high-range
frequency response during recording. Tapes recorded with
this system retain the same high quality even when played
back on other tape decks.
As shown below, characteristics such as output level and
distortion differ widely according to the bias (high-frequency) !
current.
Distortion
output
315 Hz
6.3 kHz
Ae
\ 40 kHz
315 Hz distortion
——-» Bias current
Established bias current
In conventional systems (see diagram below), the bias
current is susceptible to variations in certain recording
signals which may cause fluctuations in frequency response,
distortion, or other unwanted characteristics.
With the Dolby HX PRO system, the effective bias amount
added to the bias current is controlled in millisecond units to
greatly reduce distortion, improving linearity in high-range
response and ensuring high-intensity recording with minimal
distortion and noise.