MD-MT20/20C/20W
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FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO
THE OPERATION MANUAL.
SPECIFICATIONS
Specifications for this model are subject to change without prior
notice
General
Power source:
DC 2.4V: Rechargeable Nickel-Metal Hydride battery (AD-
T20BT) x 1
DC 5V: AC adaptor (AC 110 - 240V, 50/60 Hz)
DC 3.0V: Commercially available, “AA” size (LR6), alkaline
battery x 2
DC 4.5V: Separately available car adaptor, AD-CA20X
(for cars with a 12-24V DC negative earth electri-
cal system)
Power consumption:
0.15A (AC adaptor)
Output power:
RMS; 20 mW (10 mW + 10 mW)
(0.2% T.H.D.)
Charging time:
Approx. 4 hours (90 %)
Approx. 6 hours (fully charged)
(When using the AC adaptor included with the unit)
Battery life:
When using the rechargeable
battery (fully charged) included
with the unit
When using two, commercially
available, high capacity, “AA”
size (LR6), alkaline batteries
Continuous recording:
Approx. 7.5 hours
Continuous recording:
Approx. 7.5 hours
Continuous play:
Approx. 12 hours
Continuous play:
Approx. 15 hours
Unmeasurable (less than ±0.001% W. peak)
The continuous recording time is for analogue inputs when the volume level is set to
“VOL 0”.
The continuous play time shows the value when the volume level is set to “VOL 15”.
The above values are the standard values when the unit is charged and used at an
ambient temperature of 20°C (68°F).
The operating time when using an alkaline batteries may be different, depending on
the type and manufacturer of the battery, and on the operating temperature.
Input sensitivity:
Recording level Reference input level Input impedance
MIC H 0.25 mV 10 k ohms
MIC L
2.5 mV 10 k ohms
LINE 100 mV 20 k ohms
Output level:
Specified
output
Maximum
output level
Load
impedance
Earphones — 10 mW + 10 mW 32 ohms
LINE
250 mV
(-12dB)
—
10 k ohms
Dimensions: Width: 87.9 mm (3-7/16")
Height: 29.8 mm (1-3/16")
Depth: 79.7 mm (3-1/8")
Weight: 235 g (0.52 lbs.) with rechargeable battery
Input socket: Line/optical digital, microphone (powered by the main unit)
Output socket: Earphones (impedance: 32 ohms)/remote control unit
MiniDisc Recorder
Type: Portable MiniDisc recorder
Signal readout: Non-contact, 3-beam semi-conductor laser pick-up
Audio channels: Stereo 2 channels/monaural (long-play mode) 1 channel
Frequency response:
20 – 20,000 Hz (± 3 dB)
Rotation speed: Approx. 400 – 900 rpm
Error correction: ACIRC (Advanced Cross Interleave Reed-Solomon Code)
Coding: ATRAC (Adaptive Transform Acoustic Coding), 24-bit com-
puted type
Recording method: Magnetic modulation overwrite method
Sampling frequency:
44.1 kHz (32 kHz and 48 kHz signals are converted to 44.1 kHz,
and then recorded.)
Wow and flutter:
■ General
Power source:
DC 2.4V: Rechargeable Nickel-Metal Hydride battery (AD-
T20BT) x 1
DC 5V: AC adaptor (AC 120V, 60 Hz)
DC 3.0V: Commercially available, “AA” size (LR6), alkaline
battery x 2
DC 4.5V: Separately available car adaptor, AD-CA20X
(for cars with a 12-24V DC negative ground elec-
trical system)
Power consumption:
7.5W(AC adaptor)
Output power:
RMS; 20 mW (10 mW + 10 mW)
(0.2% T.H.D.)
Charging time:
Approx. 4 hours (90 %)
Approx. 6 hours (fully charged)
(When using the AC adaptor included with the unit)
Battery life:
When using the rechargeable
battery (fully charged) included
with the unit
When using two, commercially
available, high capacity, “AA”
size (LR6), alkaline batteries
Continuous recording:
Approx. 7.5 hours
Continuous recording:
Approx. 7.5 hours
Continuous play:
Approx. 12 hours
Continuous play:
Approx. 15 hours
Unmeasurable (less than ±0.001% W. peak)
● The continuous recording time is for analog inputs when the volume level is set to “VOL
0”.
● The continuous play time shows the value when the volume level is set to “VOL 15”.
● The above values are the standard values when the unit is charged and used at an
ambient temperature of 68°F (20°C).
● The operating time when using an alkaline battery may be different, depending on the
type and manufacturer of the battery, and on the operating temperature.
Input sensitivity:
Recording level Reference input level Input impedance
MIC H 0.25 mV 10 k ohms
MIC L
2.5 mV 10 k ohms
LINE 100 mV 20 k ohms
Output level:
Specified
output
Maximum
output level
Load
impedance
Headphones — 10 mW + 10 mW 16 ohms
LINE
250 mV
(-12dB)
—
10 k ohms
Dimensions: Width: 3-7/16"(87.9 mm)
Height: 1-3/16" (29.8 mm)
Depth: 3-1/8" (79.7 mm)
Weight: 0.52 lbs. (235 g) with rechargeable battery
Input jack: Line/optical digital, microphone (powered by the main unit)
Output jack: Headphones (impedance: 19 ohms)/remote control unit
■ MiniDisc Recorder
Type: Portable MiniDisc recorder
Signal readout: Non-contact, 3-beam semi-conductor laser pick-up
Audio channels: Stereo 2 channels/monaural (long-play mode) 1 channel
Frequency response:
20 – 20,000 Hz (± 3 dB)
Rotation speed: Approx. 400 – 900 rpm
Error correction: ACIRC (Advanced Cross Interleave Reed-Solomon Code)
Coding: ATRAC (Adaptive Transform Acoustic Coding), 24-bit com-
puted type
Recording method: Magnetic modulation overwrite method
Sampling frequency:
44.1 kHz (32 kHz and 48 kHz signals are converted to 44.1 kHz,
and then recorded.)
Wow and flutter:
MD-MT20/20C MD-MT20W
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