Kenwood DM-SG7 User Manual

DM-SG7(EN)
8
Before operation
Installation position
The MD recorder is very sensitive to vibrations. It should
be installed in a position subject to as small vibration as
possible.
Memory backup
The memory storage is held for about a day after the
power cord has been unplugged from the power outlet.
In case the power supply has stopped or the power cord
has been left unplugged for an extended period of time,
the information related to recording and editing (re-
corded at the moment a Mini Disc is ejected) may be
cleared or destroyed before it is recorded on the disc.
The lost information cannot be recovered later.
To ensure the recording of the recording and editing-
related information on the Mini Disc, be sure to eject the
Mini Disc after every recording or editing operation.
Dust countermeasure
The shutter of the disc cartridge is permanently open
while the disc is loaded in the set. Therefore, to prevent
dust from penetrating inside the disc, take the disc out of
the unit immediately after completion of recording or
playback.
Safety Precautions
What is CD-TEXT?
CD-TEXT is a standard for display of character informa-
tion (disc name, track titles, artist names, etc.) recorded
on a CD in addition to the music. When this unit and a CD
player (corresponding to CD-TEXT) are connected by
digital connection, the CD character information can be
copied to the MD.
However, as of 1997, some CDs contain a copy prohibi-
tion code, so that the character information can not be
copied. In such a case, the character information will be
displayed on the screen, but it can not be copied.
“CD text Edition” operation becomes possible for CDs
without copy prohibition code. i
US and foreign patents licensed from Dolby Laboratories.
Caution on condensation
Condensation (of dew) may occur inside the unit when
there is a great difference in temperature between this
unit and the outside.
This unit may not function properly if condensation oc-
curs. In this case, leave the unit for a few hours with
the power left ON, and restart the operation after the
condensation has dride up.
Be specially cautious against condensatin in a following
circumsatance:
When this unit is carried from a place to another across
a large difference in temperature, when the humidity
in the room where this unit is installed increases, etc.
WARNING NOTICE:
IN MOST CASES IT IS AN INFRINGEMENT OF COPY-
RIGHT TO MAKE COPIES OF TAPES OR DISCS WITH-
OUT THE PERMISSION OF THE COPYRIGHT OWN-
ERS. ANYONE WISHING TO COPY COMMERCIALLY
AVAILABLE TAPES OR DISC SHOULD CONTACT THE
MECHANICAL COPYRIGHT PROTECTION SOCIETY
LIMITED OR THE PERFORMING RIGHTS SOCIETY
LIMITED.

Kenwood DM-SG7 Specifications

System and Audio

system	Minidisc digital audio system
laser	Semiconductor laser
recording method	Field modulation overwrite method
audio compression	ATRAC (Adaptive TRansform Acoustic Coding)
playing rotation	Approx. 400 rpm ~ 900 rpm (CLV)
D/A conversion	1 Bit
oversampling	128 fs (5644.8 kHz)
A/D conversion method	Sigma-delta method
sampling frequency	44.1 kHz

Digital Audio Performance

frequency response (playback mode)	8 Hz ~ 20 kHz, ± 1 dB
signal to noise ratio (playback mode)	More than 92 dB
dynamic range (playback mode)	More than 90 dB
total harmonic distortion (1 kHz, playback mode)	Less than 0.007 %
channel separation (1 kHz, playback mode)	More than 85 dB
wow & flutter	Less than unmeasurable limit

Inputs and Outputs

analog input sensitivity / input impedance	300 mV / 70 kΩ
analog output level / load impedance	1.2 V / 3.2 kΩ
digital input, optical (wave length 660 nm)	- 15 dBm ~ - 21 dBm

General Specifications

power consumption	14 W
dimensions (width)	200 mm (7 - 7 / 8")
dimensions (height)	77 mm (3 - 1 / 16")
dimensions (depth)	247 mm (9 - 3 / 4")
weight (net)	2.1 kg (4.6 lb)