Dynavector DV-505
¥ 60,000 (around 1978)
Commentary
A mass separation type dynamic balance tone arm employing an electromagnetic viscous mass control system.
It has a unique structure with two support shafts, a main arm for lateral movement only and a sub arm for longitudinal movement only.
This increases the inertia mass of the arm mass of the arm, the movement of the cartridge in the longitudinal direction is lightened, and it is easy to follow the warping and dispersion of records.
This structure also provides a large margin against howling.
In order to eliminate large peaks due to the low-frequency resonance of the tone arm and to further clarify the low-frequency separation, a dynamic damping system is adopted. In this system, the property of coupled vibration is utilized by installing a sub vibration system in the main arm, and the low-frequency resonance is suppressed within 2.5 dB.
In order to reduce resonance in the lateral direction, we have adopted an electromagnetic viscosity control mechanism that applies resistance by eddy currents and magnetic field lines.
As a result, the deterioration of oil caused by the aging of oil, which occurred in the oil dump type, is eliminated.
The cartridge's needle pressure application mechanism adopts a dynamic balance type using a spiral spring.
The arm base is in the free position, and the pin cord connector can be mounted horizontally from the arm mounting part.
This eliminates the need for drilling the player board.
There are 3 variations of blue, silver and black.
Model Rating
Type | Tone arm |
Total Length | 335 mm (with shell) |
Effective length | 241mm |
Total height | 72 mm (maximum 94 mm) |
Offset Angle | 21.5 ゜ |
Horizontal tracking error | Inner Circumference : 0 ° Outer circumference : 2.2 ° |
Overhang | 15mm |
Height adjustment range | 38 mm ~ 70 mm (Pipe Center) |
Cartridge dead weight | 9g ~ 35g (with shell) |
Needle pressure variable range | 0 ~ 3g (0.25g increments) |
Horizontal and vertical sensitivity | 50 mg or less |
Output code | 37pF/m or less Low Capacity Shield (OLC-5B) 5P connector system |
Head connector | EIA standard 4P connector |