Dynavector DV 505 tonearm User Manual download pdf (Page 8)

(December/3/2001)

7. Two dampers

As explained in part 7, DV-505 employs two kinds of damper- - electro magnetic and inertia-controlled

type.

electro magnetic damper

This damper applies effect of eddy current, which is generated when conductor moves in

magnetic field, and which obstructs conductor in motion. It has almost no damping effect on

motion of non-vibrating tone arm, but is highly effective to vibration of arm, such as arm

resonance.

Inertia controlled dynamic damper

This damper, incorporated into main arm, consists of a pair of spring and mass, each of these

constituents having a carefully selected constant. This spring mass oscillation system oscillates

only horizontally as main arm resonance occurs, and causes resonance peak to dip.

Phase lag in one oscillation system relative to another is effectively applied in this damper,

which functions only in response to arm resonance.

8. Specifications

System Bi-axls inertia controlled dynamic balance type tone arm

Total length 335mm (including shell)

Effective length 241 mm

Overhang 15mm

Offset angle 21.5 degree

Height 72mm (liftable to max. 94mm )

Height adjustability 37-70mm (at sub arm center)

Optimum cartridge weight 0 - 23grams (or up to 35g including headshell)

Tracklng force adjustability 0 - 3grams by 0.25grams step

Lateral tracking angle error -1.1 degree to +2.2 degree

(0 degree at inner band of record disk, 2.2 degree at outside)

Motion sensitivity Lateral -- less than 50mgrams

Vertical -- less than 50mgrams

Net weight 1,250 grams

Output connector 5P connector with low resistance cord 0.025ohms/m , 37pF/m

Head connector: EIA standards

Head shell Aluminum headshell

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Dynavector DV 505 tonearm User Manual Page 8