Audio Database


Lo-D DAD-1000
189,000yen(1982 release)

The compact disk player of No. 1 which Hitachi Lo-D announced.

The erecting radioscopy type front-loading scheme where a rotation of a disk is in sight is adopted.

In addition to functionalities, such as random-memory song selection, one-touch song selection, a scanner play, a memory stop, and an auto-repeat, the location indicator which a pickup location understands at a glance is carried.

Wired Laser Parts, Digital-disposal-circuit

Rating of a mode
Form Compact disk player
<Audio part>
The number of channels Two channels
Frequency characteristic 5Hz-20kHz±0.5dB
Dynamic range 90dB or more
SN ratio 90dB or more
THD 0.03% or less
Separation 85dB or more (1kHz)
Wow and flutter Below a limit of measurement (±0.001%W.Peak)
Performance time 60 minute / single sided (possible for a maximum of 75 minutes)
Diameter 120mm
<Signal format>
Sampling frequency 44.1kHz
The number of quatizations A 16-bit linear / channel
Transmit bit rate 4.3218Mb/a second
Scheme Objective lens drive system optical pickup
Objective lens drive system Two-dimensional parallel drive
Light source Semiconductor laser
Wavelength 790nm
Output voltage 2.0Vrms
Supply voltage AC100V, 50Hz/60Hz
Power consumption 24W
Dimensions Width 320x height 145x depth of 234mm
Weight 5.6kg