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Long thin rod 

 

90 degrees 

 
 
 
 
 
 
 

E.     ANTI-SKATING: 

 

 

A  pivoted  arm  without  an  offset  head  would  not  be  subject  to  skating  force.  

However,  it  will  also  have  no  correction  for  tracking  error  and  the  resulting 

distortion  is  unacceptable.    As  soon  as  the  arm's  head  is  offset  to  lower  tracing 

distortion, skating force arises.  Greater offsets result in greater skating force.  The 

12” arm has a very small offset angle and therefore a very low skating force to deal 

with. 

 

 

After very careful listening tests we have determined that every tonearm we tried 

sounded  better  with  their  mechanical  anti-skating  disabled  and  the  tracking  force 

very slightly increased.  All mechanical anti-skate devices add a negative sound to 

the music because they are made of parts that can vibrate.  We solve the problem 

in a unique way: 

 

 

As  mentioned  earlier,  the  arm  wire  applies  the  anti-skating  force.    The  degree  of 

force applied can be adjusted as explained below. 

 

 

To increase or decrease the amount of anti-skating force applied, simply unplug the 

Lemo connector and twist it in the direction you want the force applied. 

 

 

For example, to increase anti-skating force gives the connector a counterclockwise 

twist,  unwinding  the  coiled  wire.    Likewise,  to  decrease  the  force,  give  the 

connector  a  clockwise  twist.    Remember,  the  Lemo  connector  can  only  be 

"adjusted" in increments of whole turns.  If it is not, its key will not line up with the 

groove in the receptacle. 

 

Summary of Contents for HR-X

Page 1: ... THE RIM DRIVE IS VERY DEPENDENT ON THE PERFECT ROUNDNESS OF THE PLATTER YOUR NEW HR X RIM DRIVE HAS THE PRECISION ALUMINUM PLATTER WE USE ON THE CLASSIC 3 TO GIVE THE BEST SPEED STABILITY AND ACCURACY OF SOUND VPI INDUSTRIES INC 77 CLIFFWOOD AVE 3B CLIFFWOOD N J 07721 PHONE 732 583 6895 Email sales vpiindustries com www vpiindustries com ...

Page 2: ...platter and level the turntable in two directions left to right and front to back Rotating the black cone shaped feet on the bottom of the four legs will level the unit Now place the RIM DRIVE in position The left side of the HR X has a cutout where the RIM DRIVE is positioned The RIM DRIVE is heavy and should be moved slowly The power button goes to the left the socket to the rear Remove the tape...

Page 3: ...he warranty You will see a number of things in plastic bags Allen wrenches Hex nuts and washers for cartridge mounting Arm mounting and alignment tool Shure stylus gauge Take all these items out and set them aside A CARTRIDGE MOUNTING Remove the arm tube from the box taking special care not to strain or damage the delicate 4 color wire and Lemo connector and place it right side up on the foam pad ...

Page 4: ...d on the rear shaft of the tonearm For most cartridges you will only need this large weight The counterweight is held in position by a setscrew The counterweight is used for setting the azimuth lateral balance of the cartridge and the vertical tracking force For now position the large counterweight to give a minimum of tracking force just enough force to keep the cartridge on the alignment jig In ...

Page 5: ...center of the grid as possible Using a lighted magnifier will make this job very easy BE VERY CAREFUL NOT TO DAMAGE THE CARTRIDGE STYLUS Move the cartridge so that the stylus rests on the dot Now viewing the cartridge from above line it up so that its sides are symmetrically positioned between the lines of the grid If the cartridge has parallel sides these should be made parallel to the grid lines...

Page 6: ...damage to the grooves than running a cartridge at a heavy setting Remember to raise or lower the arm until it is parallel to the platter when sitting on the stylus force gauge any gauge Set the tracking force with the arm parallel to the platter remove the gauge place a record on the platter put the cartridge on the record and make the arm parallel to the record This is your zero point write the n...

Page 7: ...king force very slightly increased All mechanical anti skate devices add a negative sound to the music because they are made of parts that can vibrate We solve the problem in a unique way As mentioned earlier the arm wire applies the anti skating force The degree of force applied can be adjusted as explained below To increase or decrease the amount of anti skating force applied simply unplug the L...

Page 8: ...ating the knob clockwise lowers the arm and rotating it counterclockwise raises it Set the arm height as follows Place a record on the platter surface Lower the arm onto the record and make the arm tube parallel to the record surface by rotating the arm height knob as needed This is a good initial setting You may wish to vary it depending on the cartridge you are using and or the particular record...

Page 9: ...IM DRIVE The bottle of light oil is used to occasionally lubricate the motors and RIM DRIVE If either unit ever makes noise it is time to re lube it J DAMPING THE ARM The JMW 12 7 has viscous damping provision around its male bearing point Lift off the arm tube and fill the cup roughly full with the damping fluid provided Place the arm back on the bearing and lift it slightly to see if the damping...

Page 10: ...installation modification misuse or servicing by the purchaser or service technician not authorized by VPI to perform such service will not be warranted This warranty does not cover trivial or cosmetic defects that do not impair the unit s normal function VPI reserves the right to make changes in this product without assuming any obligation to install such change in any product previously manufact...

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