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For now, position the large counterweight as close to the bearing housing as you can 
(toward the front of the arm) but not touching the balance ring. The object here is to 
balance  the  arm  while  keeping  the  counterweight  as  close  to  the  bearing  housing  as 
possible.  This results in the least inertia for a given cartridge weight. 

 

In some rare cases it may be necessary to use two counterweights together or a larger 
counterweight.  Contact your dealer if a second or larger counterweight is needed. 

B.  OVERHANG ADJUSTMENT:  

 

This  adjustment  will  yield  the  lowest  distortion  in  the  last  third  of  the  record,  the 
hardest  to  track,  when  playing  a  typical  12"  record.    Do  not  go  crazy  over  this 
adjustment.  You do not know if the stylus is aligned properly on the cantilever.  You 
are also facing a constantly moving target when playing a record.  The arm is moving 
in  3-dimensions  and  will  only  approximate  the  accuracy  you  have  built  into  your 
alignment. 

 

Place the arm tube assembly on the lower bearing, taking care not to strain or damage 
the 4-color wire and Lemo connector.  Place the arm in its rest. 

 

At the rear of the arm base assembly is the connector block.  Plug the Lemo connector 
into its receptacle on top of the block.  Notice that the connector can plug in only one 
way.    Align  the  red  dots  on  the  arms  plug  with  the  red  dot  on  the  receptacle.    Push 
gently, do not force the plug. 

 

Place the Alignment Jig into position by sliding the narrow end with the circular cutout 
between the arms lateral balance weight and the platform that supports the armrest.  
Make sure that the jig's cutout fits against and around the bearing well and the hole is 
over the spindle. 

 

Move the counterweight so there is a  slight amount of tracking force, just  enough to 
keep the stylus on the alignment jig.  Slightly tighten the set screw so it doesn’t slip 
but can still be moved.  

 

While the arm is in its rest, loosen the screws that hold the cartridge just enough that 
the cartridge can be moved back and forth. 

Содержание JMW-9 Scout Tonearm

Страница 1: ...VPI JMW 9 Scout Tonearm Manual THIS MANUAL IS GOOD FOR COMPLETE ARMS OR ARMTUBES ONLY Setup and Instruction Manual VPI Industries Inc 77 Cliffwood Ave 5D Cliffwood NJ 07721 http www vpiindustries com ...

Страница 2: ... use the washers under the screw heads to prevent damage to the finish on the JMW Scout Arm In this step the connectors will be attached to the cartridge s terminals Disregard the color of the insulators on the cartridge clips go by the color of the wires THE COLOR CODE OF THE WIRE IS RED right hot BLACK OR WHITE left hot GREEN right ground BLUE left ground IF YOUR PHONO SECTION INVERTS PHASE THE ...

Страница 3: ...ate the accuracy you have built into your alignment Place the arm tube assembly on the lower bearing taking care not to strain or damage the 4 color wire and Lemo connector Place the arm in its rest At the rear of the arm base assembly is the connector block Plug the Lemo connector into its receptacle on top of the block Notice that the connector can plug in only one way Align the red dots on the ...

Страница 4: ...idge has parallel sides these should be made parallel to the grid lines Also make sure that the cartridge is centered between sets of lines If you can see the cantilever clearly you can align the cantilever to the alignment grid This is difficult and may produce no increase in sound quality Double check the adjustments made above The cartridge needs to be both centered and square between the gird ...

Страница 5: ...ts on the record surface Use the counterweight or azimuth ring to set correct azimuth Lay the long thin rod supplied behind the cartridge mounting screws into the V groove and use it as a guide for setting azimuth Rotate the flat part of the ring towards the side that is lower and that side will become lighter causing it to rise Playing with this will give very accurate azimuth settings You can al...

Страница 6: ...R VTF THAN YOU WANTED Recheck the azimuth and the VTF at least twice to make sure they are correct A little extra time here will result in better sound Make sure you do not go light on tracking force that is a really bad idea D ANTI SKATING Anti skating is one of the least understood forces acting on a tonearm Skating force is created by friction between the stylus and the record causing a force v...

Страница 7: ...CAN GO TO THE MECHANICAL ANTI SKATE SUPPLIED THE THREE RUBBER RINGS SET THE ANTI SKATE FORCE THE CLOSER THEY ARE TO THE END OF THE ROD THE MORE ANTI SKATE FORCE YOU ARE APPLYING E ARM HEIGHT Place a record on the turntable Loosen the two setscrews in the base of the arm right side and rear of base Lower the arm onto the record and make the arm tube parallel to the record surface by rotating the wh...

Страница 8: ...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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