Sony Silentwriter 290 Manuale di istruzioni per l'uso - Pagina 27
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Cleaning the cabinet
Clean this system with a soft cloth slightly
moistened with a mild detergent solution. Do
not use any type of abrasive pad, scouring
powder, or solvent, such as thinner, benzine, or
alcohol.
To prevent a tape from being
accidentally recorded over
Break off the cassette's overwrite protection
tab from side A or B as illustrated.
Break off the
cassette tab
To later reuse the tape for recording, cover the
broken tab with adhesive tape.
About a tape longer than 90 minutes
The use of the tape with more than 90 minutes
of play time is not recommended except for
long, continuous recording or playback.
Cleaning the tape heads
Use dry- or wet-type cleaning cassette
(available separately) after every 10 hours of
use, before you start an important recording, or
after playing an old tape. Failure to clean the
tape heads can cause degraded sound quality or
an inability of the unit to record or play tapes.
For details, refer to the instructions of the
cleaning cassette.
Demagnetizing the tape heads
Use a demagnetizing cassette (available
separately) after every 20 to 30 hours of
use. Failure to demagnetize the tape heads
can cause an increase in noise, a loss of
high frequency sound, and an inability to
completely erase tapes. For details, refer to the
instructions of the demagnetizing cassette.
Specifications
Main unit
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC
DISTORTION:
(MHC-GX470 The United States model only)
With 6 ohm loads, both channels driven, from
120 – 10,000 Hz; rated 125 watts per channel
minimum RMS power, with no more than 10%
total harmonic distortion from 250 milliwatts to
rated output.
Amplifier section
North American model:
MHC-GX470
Front speaker
Continuous RMS power output
(reference): 125 + 125 watts (6 ohms at
1 kHz, 10% THD)
Total harmonic distortion: less than 0.07%
(6 ohms at 1 kHz, 80 W)
Subwoofer
Continuous RMS power output
(reference): 150 watts (6 ohms at 80 Hz,
10% THD)
Total harmonic distortion: less than 0.07%
(6 ohms at 80 Hz, 90 W)
European and Russian models:
MHC-RG590S
Front speaker
DIN power output (rated): 110 + 110 watts
(6 ohms at 1 kHz, DIN)
Continuous RMS power output
(reference): 145 + 145 watts (6 ohms at
1 kHz, 10% THD)
Music power output (reference): 290 +
290 watts (6 ohms at 1 kHz, 10% THD)
Subwoofer
DIN power output (rated): 130 watts
(6 ohms at 80 Hz, DIN)
Continuous RMS power output
(reference): 170 watts (6 ohms at 80 Hz,
10% THD)
Music power output (reference): 340 watts
(6 ohms at 80 Hz, 10% THD)
Continued
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