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7

Aligning the tonearm 

and cartridge 

Step 7

 

Remove the thumbscrew on the back of the  

central POM block and rotate the complete central 

assembly to the desired tangential curve.  

 

Slight in position and fix again with the  

thumbscrew with normal hand tension.

Make sure your tonearm is parallel to the platter 

surface.

Slide the tonearm with the mounted cartridge 

towards the single alignment spot of the selected 

tangential curve. It is surrounded by lines to ease 

adjustment and precise view.

Step 8

 

You may need to carefully shift the cartridge in 

the mounting area of your tonearm / headshell to 

meet the single point with the stylus. 

 

IMPORTANT NOTE

  

Don’t forget to retighten the 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 before carry out  

this step.   

Using the glass magnifier will dramatically  

increase visibility of the alignment.

You can now align your mounted cartridge  

to your choice of tangential curve (picture see  

page 3).

- UNI DIN 
- Loefgren B DIN 
- Loefgren B IEC 
- Loefgren A / Baerwald DIN 
- Loefgren A / Baerwald IEC 

Make sure the tracking force on your tonearm 

is set to an appropriate value for the mounted 

cartridge.

 

IMPORTANT NOTE

 

  

Disengage the anti-skating on your tonearm 
while aligning the cartridge.

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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