DENON DP-1800

Commentary

Direct drive player made of natural marble.

The drive system uses a direct drive system, and the drive motor uses an AC servo motor with smooth rotation in principle.
DENON has developed a magnetic recording / reproducing system to detect the rotational speed. In this system, the inside of the turntable rim is coated with a magnetic material, and 1000 pulses are recorded with a high accuracy of less than 0.01% of the recording wavelength error. This enables accurate speed detection and increases the gain and stability of the control circuit because the detection frequency is high.

The top of the strobe uses a method in which the object inscribed inside the turntable is seen through the strobe window by the reflection of the mirror.
The speed can be adjusted within ± 3% by operating the speed control knob.

Newly developed butyl rubber sheet is used for the turntable sheet.
This sheet was newly developed by analyzing vibration using laser light, and the sound quality degradation is prevented by suppressing vibration of the record board due to sound pressure, etc.

A new dynamic damping mechanism has been adopted in the body of the tone arm to suppress the split resonance of the tone arm itself and to reduce the influence of vibration noise transmitted from the player cabinet.

Uses an anti-skating mechanism to prevent needle skipping and arm flow for more stable tracing.

The cabinet uses a structure that combines natural marble and particle board.
Acrylic is used for dust cover.

Model Rating

Type	Direct drive player system
Phono Motor Section
Drive system	Direct drive by AC servo motor
Motor	AC torque motor
Number of revolutions	33 1/3rpm, 45 rpm
Rotational speed fine adjustment range	+ / - 3% or more (specified speed)
Signal-to-noise ratio	73 dB or More (DIN-B)
Wow and flutter	0.03%wrms
Start-up characteristic	Constant speed within 1/2 revolution
Turntable	30 cm Aluminum Die-cast
Inertial mass	160 kg / cm2
Speed switching mechanism	Slide type using micro switch
Tone Arm Section
Type	Static balance type dynamic damping arm
Effective length	244mm
Overhang	14mm
Needle pressure variable range	0 ~ 2.5g/1 rotation 1 scale 0.1g, direct reading system
Applicable Cartridge Dead Weight Range	5g ~ 11g
Head shell	PCL-3
Shell dead weight	8.5g (Mounting Screws and Nuts Not Included)
Head connector	EIA standard 4P connector
Arm lifter	Oil dump type
Output code	Low capacity cord
<General>
Cabinet	Natural Marble and Mahogany Wood-Clad Plywood Used
Pwer	100 VAC, 50Hz/60Hz
Power consumption	10W
External dimensions	Width 485x Height 172x Depth 408 mm (With Dust Cover Closed)
Weight	16.5kg