Dual 522 Service Manual

Service
Manual
Technical data
Current
Line Voltage
Drive
Power
consumption
Starting Time
Power Consumption
Platter
Platter speeds
Pitch Control Variation
Speed
control monitoring
Sensitivity of the strobe for 0.1 %
speed deviation
Total VVow and Flutter
Rumble
(according to DIN
45
500)
Tonearm
Effective Length of Tonearm
Offset Angle
Tangential Tracking Error
Tonearm Bearing Friction
(related to stylus tip)
Stylus Pressure
Cartridges
VVeight
Measured values =
typical values.
Rumble and wow and flutter values obtained with test record.
AC 50 or 60 Hz, changeable by changing motor
pulley
115 or 230 V,
changeable
Dual 16 -pole synchronous motor: flat belt for flywheel drive
approx. 8
watts
(to each
nominal speed) approx. 2 seconds at 33 1/3 rpm
at 220
V, 50 Hz:
approx. 75 mA
at 117 V, 60
Hz: approx. 140 mA
Non-magnetic, detachable, 1 kg,
304 mm 0
33
1/3 and 45
rpm
at
both platter
speeds
Adjustment range at 33 1/3 rpm approx. 1 semitone
(6%)
with
stroboscope for platter
speeds 33 1/3 and
45 rpm,
adjustable to 50 or 60
Hz.
6 division markings
per minute at 50 Hz,
7.2
division markings per minute at 60 Hz.
DIN
± 0.07 %
WRMS
±
0.04
%
Unweighted 48 dB
Weighted
70 dB
Torsion-resistant
tubular aluminium tonearm in
four-point gimbal bearing
221 mm
24° 4'
0.16
0 /cm
vertical 0.07 mN
(0.007
g)
horizontal 0.15 mN (0.0159)
from 0 — 30 mN (0 —3 g) infinitely variable with 1 mN (1/109) calibrations
from 0 — 15
mN (0 — 1.5 g)
operable from 5
mN (0.59) stylus pressure up
with 1/2 inch
screw-type attachment. These can be fitted with the special
accessories
no. 262 186 which can
be obtained from trade
dealers.
4.1 kg
Dual
522
Edition
January
1980
•
Download from www.dual.de
Not for commerical use

Dual 522 Specifications

General

Drive System	Belt drive
Speeds	33 1/3, 45 RPM
Tonearm	Static balanced S-shaped tonearm
Cartridge	Ortofon ULM 60E
Platter	Aluminum die-cast
Wow and Flutter	0.1%
Rumble	-50dB
Drive type	Belt