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5

Step 4

Mount the long stainless steel locator pin with the 

reticule either on top or pointing downward into 

the 3mm-hole at the end of the aluminum  

positioning arm. Handle with care, as the tip is 

quite sharp and may cause injuries. 

Loosen the front screw on the POM-block. Slide 

the positioning arm with the locator pin toward 

the center of the tonearm body.

Now carefully pull the positioning arm towards 

the pivot of the tonearm and place locator pin or 

reticule right on the pivot of your tonearm.  Many 

tonearms have a small indentation indicating 

where the exact pivot point is located.   

 

This is ideal for precise positioning of the locator 

pin on the pivot point.  

Step 5

 

If you can spot the tonearm pivot, put the pinpoint 

of the locator pin here.  Many tonearms have a 

small indentation indicating where the exact pivot 

point is located.  This is ideal for precise  

positioning of the locator pin on the pivot point.

If there is no indication of the tonearm pivot 

point, attempt to locate pin exactly over the  

tonearm pivot center.

If unsure of pivot center, use the reticule to  

visually determine tonearm pivot point by finding 

symmetrical outer lines on the tonearm body.

Step 6 

 

When the pivot point is determined and is  

directly underneath the pin-point of the locator 

pin, tighten thumb screw holding the positioning 

arm in place. 

Take care to 

NOT

 move the SMARTractor in 

any way until the measurement of P2S valve is 

finished.  

 

The pinpoint has to be located precisely over the 

pivot at all times during alignment.

You can fix the SMARTractor in place with clear 

or painters blue tape by placing tape from the 

SMARTractor to the side of the platter. 

 

You can now read out the exact value on the  

Vernier scale. 

 

If unsure, please see 

page 6

 for a short tutorial 

how to read the Vernier scale correctly.

Summary of Contents for SMARTractor

Page 1: ...Universal high precision triangular positioning alignment instrument for optimized analog phono tonearm alignment true one point cartridge set up owner s manual SMARTractor acoustical systems ...

Page 2: ...rior to shipment Please do get yourself familiar to the handling and use of the SMARTractor While it is a mechanical positioning instrument it needs a minimum of attention to detail by the user to obtain the maximum precise results it ensures if handled correctly A brief introduction Most important Please study the step by step illustrated instruction to learn how to use and set up the SMARTractor...

Page 3: ...SMARTractor an additional 20 mm of height for the positioning arm in those instance where required for illustration see page 8 The SMARTractor offers a total of 5 different tangential curves with which to align a given cartridge and tonearm combination Selecting the tangential curve You have the option to align the cartridge using any of these five tangential curves UNI DIN 1 Loefgren B DIN 2 Loef...

Page 4: ...very hard time getting the white 20 mm POM ring off your spindle again The 12 mm and or 6 mm spindle adapter insert allows the precise centering of the SMARTractor on a wide range of spindle diameters Remember Please be careful and do not use any excessive force Pushing down realy hard creates a VERY tight lock which you will have big problems loosening up again Measuring P2S 20 mm spindle ring an...

Page 5: ...ing where the exact pivot point is located This is ideal for precise positioning of the locator pin on the pivot point If there is no indication of the tonearm pivot point attempt to locate pin exactly over the tonearm pivot center If unsure of pivot center use the reticule to visually determine tonearm pivot point by finding symmetrical outer lines on the tonearm body Step 6 When the pivot point ...

Page 6: ...e left of the scale just before the half circle end To illustrate the read out procedure here are a few examples of mounting distances for common tonearms One will become accustom quite quickly to this way of reading the scale The Vernier scale is an international standard in industrial precision analog measuring The magnifier Using the glass magnifier greatly increases the visibility of the stylu...

Page 7: ...mounting screws after final position is obtained Step 9 When the stylus is precisely sitting on the single spot use the helping lines to ensure that the cantilever is perpendicular to the SMARTractor surface when viewed from the front Adjust the cartridge accordingly until the cantilever is visually in this position If you have a Uni Pivot design tonearm it is critical that the table is level befo...

Page 8: ... Hofstetten Germany www acoustical systems com info acoustical systems com Step 10 Make sure that the stylus is precisely located on the spot with the helping lines straight with the cantilever making sure that the locator pin is still exactly positioned over the pivot When you are sure that the stylus is precisely located on the spot with the helping lines in line with the cantilever the tangenti...

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