Sony WM-D6C - Manual (Page 12)

MAINTENANCE SPECIFICATIONS
CLEANING THE HEADS
Clean the heads after every 10 hours of use to
enjoy optimum hi-fi stereo sound: moisten a
cotton swab or a soft clotb with denatured
alcohol, and gently wipe the parts shown
below.
record/playback head
DEMAGNETIZING THE HEADS
Either prolonged use, or an accidental con­
tact with a piece of magnetized steel (screw­
driver, scissors, etc.) will magnetize the
heads causing an increase in tape noise. In
such an event,demagnetize the heads using
a commercially available head demagnetizer.
CLEANING THE CASING
Clean the casing with a soft cloth slightly
moistened with water or a mild detergent
solution. Do not use solvents such as alco­
hol, benzine, or thinner as they may mar the
finish of the casing.
Recording system
4-track, 2-channel stereo
Wow and flutter
±0.14% (DIN)
0.04<)^WRMS (NAB)
Tape speed deviation
±0.3% (speed tuning OFF)
Speed tuner variations
Approx. ±4%
Frequency response
DOLBY NR OFF
• With TYPE IV cassette
40-15,000 Hz±3dB
• With TYPE II cassette
40-15,000 Hz±3dB
• With TYPE I cassette
40-15,000 Hz±3dB
S/N (NAB, at peak level)
DOLBY NR C
TYPE IV cassette
71 dB
TYPE II cassette
71 dB
TYPE I cassette
67 dB
DOLBY NR В
TYPE IV cassette
65 dB
TYPE II cassette
65 dB
TYPE I cassette
61 dB
DOLBY NR OFF
TYPE IV cassette
58 dB
TYPE II cassette
58 dB
TYPE 1 cassette
54 dB
Total harmonic distorsion
0.9% with TYPE IV cassette
Inputs MIC (PLUG IN POWER)
(stereo minijack)
x 1
0.25 mV with low impedance
microphone
LINE IN (stereo minijack)
x 1
77.5 mV (47 kilohms)
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