Dynavector DV501 Tone arm Instruction Manual
INDEX
Here appears the new bi-axis tone arm
Dynavector DV501 designed on the same
theoretical base of DV505 which are recognized
and appreciate highly by their outstanding
performance and thus given the Design and
Engineering Award at C.E.S. Chicago 1977. And
now again, DV501 has been awarded the similar
prize at C.E.S. Chicago in1982 for its highly
advanced technology.
1. Foreword
2. Parts illustration
3. Installation to turntable
4. Output line connection
5. Cartridge installation and
adjustments
6. Specifications
1. Foreword
Thank you for choosing Dynavector products. DV501 is a specially designed tone arm which can
reproduce the signal on disc without influence caused by disc warp. In order to perform its unique
specifications Including bi-axis inertia separation to vertical and lateral directions, the DV501 has a
more complicated structure compared to conventional tone arms.
However, it is quick and easy to set up, provided that you should read this instruction manual carefully
first.
2. Parts illustration
3. Installation to turntable
For mounting the DV501 you will first require an
accurately placed hole in the deck. This can easily
be obtained using the enclosed paper template.
After marking the holes' center drill out to a
diameter of 29 or 30mm. Test the arm in the
mounting hole. Mark the position of the DV501's
small fixing holes on ARM BASE, remove the arm
and then make three small holes at these positions
using a gimlet or sharp instrument. The arm can
now be secured to the board using the screws
provided.
4. Output line connector
Insert the DV501's arm cable to the output terminal
which is situated under the DV501.
There will be a 2-5mm allowance between the plug
and outer pipe of the DV501 to enable you to use
other types of arm cord you wish to do so. (See
Fig. 2)
CAUTION
There are no rubbers or felt washers
z
provided as these detract from the
performance in todays modern
turntables.
Please keep the DV501 in its box
z
whilst drilling holes to avoid any
damage to the arm.
5. Cartridge installation and adjustments
Please follow these six points when installing your cartridge in the DV501.
1. Damper plate check
2. Overhang adjustment for the cartridge in headshell.
3. Main weight balance position
4. Tone arm height adjusting
5. Tracking force setting.
6. Bias adjustment.
These checks can be carried out as follows;
1. Damper plate check
Gently rotate the Main Arm. If the
Damper Plate moves freely through
the Damper Magnet slit no further
action is necessary. If, however, the
plates' movement is restricted by
touching or rubbing on the magnet
you will need to gently bend the plate
with your finger to avoid obstruction.
Please be careful not to over bend
this delicate part of the arm, any
adjustment should be minor and free
running of the damper plate soon
obtained. Avoid knocking or touching
the plate after it has been set. Be
careful not to scratch the painted
surface. (see Fig. 3).
2. Cartridge mounting and overhang
adjustment
Correct adjustment for the overhang
is needed to obtain good
performance of cartridge.
Fix the cartridge to the headshell after
adjustment for the overhang as
cartridge stylus tip is exactly over the
mark on the the aluminum template
we supplied.
3. Main weight balance
As you are aware the DV501 is in fact
two arms in one. In the horizontal
plane it has very heavy inertia careful
balancing with the main weight is
therefore required in order for the
main arm to rotate smoothly.
The actual DV headshell weight of 15
grams should be added to the
cartridge weight.
Slide the main weight until it fits the
scale of total weight (headshell plus
cartridge) printed on main arm (see
rig 5)
NOTE
If the total weight is in excess of
30grs the arm cannot balance.
Please refer to your Dynavector
distributor who can supply an optional
weight set for up to 40grs (weight set
DV7D).
4. Tone arm height adjusting
This adjustment can be made by
releasing the height adjust screw as
shown in Fig 6.
Height adjustment is correct when
sub arm is parallel to record surface.
Always hold the arm securely to avoid
to fall when releasing the adjust
screw.
5. Tracking force setting
DV501 has static balance type
tracking force. Insert the sub weight
onto the sub arm with the weight
screw facing towards you (it will not fit
if the screw faces the main arm )
With the headshell and cartridge in
place slide the weight along the sub
arm until it balances precisely.
When this position is reached slide
the weight forward by the required
number of dots to obtain tracking
weight.
Each dot represents 0.5g of tracking
force (see Fig 7)
Caution
The larger marks on the sub arm are for use only
with optional weight set DV7D.
6. Bias adjustment
Suspend bias adjustment weight on
scale bar at rear of main arm.
Position should correspond exactly
with tracking force setting.
Each pitch coincides with 0.5grs of
tracking force (see Fig 8)
In some case due to record material
or stylus shape of cartridge, you
could obtain the better result to
readjust the weight.
All adjustments and setting up are now completed. Your DV501 arm is designed to be maintenance
free. It will give long and reliable service but should be treated with care and kept in a dust free
condition.
Should the arm require an overhaul or if you need any quations or spare parts for your DV501 please
contact your dealer or Dvnavector distributor.
6. Specifications
System Bi-axls inertia controlled dynamic and eddy current damping
Total length 309mm (including headshell)
Effective length 241mm
Overhang 15mm
Offset angle 21.5 degree
Height 54mm (liftable up to 94mm )
Depth 55mm (without connecting cable )
Height adjustability 36-76mm (at sub arm center)
Optimum cartridge weight 15 - 30 grms ( including headshell)
Tracklng force adjustability 0 - 3 grams by 0.5 grams step
Lateral tracking angle error -1.1 degree to +2.2 degree
Motion sensitivity Lateral -- less than 50 mgrams
Net weight 960 grams
static balance type tone arm
(0 degree at inner band of record disk, 2.2 degree at outside)
Vertical -- less than 20 mgrams
Output connector 5P connector with low resistance cord 0.025 ohms/m, 50pF/m
Head connector: EIA standards
Head shell Aluminum diced and milled (weight 15 grams)
Optinal devices
DV7A
arm base
DV7D
weight set
When attaching DV501 to a metal turntable arm-board, the supplied screws
cannot be used. DV7A arm base enables the DV501 to be flxed to such
turntables using only one hole.
For use when cartridge and headshell weight is in excess of 30 grms.
DV7D weight set allows balance up to 40 grms
(December/3/2001)
Copyright (C) 2001 Dynavector Systems, Ltd. All Rights Reserved.
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