Dynavector DV 505 tonearm - Manual

Dynavector DV-505 Tone arm Instruction
Manual
INDEX
Dynavector DV-505 tone arm has an
entirely new concept in tone arm design.
The DV-505 is a high performance tone
arm with various new functions that
make the cartridge in use work the best
way it can. The DV-505 user is requested
to please read through this brochure to
enjoy its niceties fully.
1. Foreword
2. Parts illustration
3. Pre use check points
4. Application(1)
5. Application(2)
6. Arm resonance
7. Two dampers
8. Specifications
1. Foreword
As is commonly known, a pickup cartridge generates electricity by cantilever motion relative to motion
of cartridge proper. While cantilever stylus precisely traces signals recorded in groove of disk, cartridge
proper receives those signals faithfully provided that it is held motionless (free of vibration). Hence, the
great role of a tone arm.
How should cartridge be held motionless without adverse effects on signal trackability? The DV-505
has solved this problem by adopting the unique (vertical/horizontal) Bi-axis system. The horizontally
movable main arm is of sufficient weight for vibration-free operation, and the adverse effect of weight
on signal trackability is nullified by use of an angular-radial compound bearing design. Conversely, the
vertically movable sub-arm is made so light that it never lets the stylus jump the groove of even a disk
with warp(s) previously unnegotiable.
Also, the DV-505 employs a double damper method -- inertia controlled dynamic damping type plus
electro-magnetic damping type -- to introduce an ideal solution to the problem of tone arm resonance in
low frequency range. This has generally been neglected about audio equipment that absolutely
requires a flat frequency characteristic.
2. Parts illustration