Acoustical Systems SMARTractor Manuale utente

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

The SMARTractor is a versatile high-precision

positioning and measuring instrument for use with

phono tonearms and turntables.

It covers all areas of the geometric tonearm

alignment with high precision mechanical

accuracy.

It also allows for precise measurement of

Pivot-to-Spindle (P2S) mounting distance -

of any given tonearm.

SMARTractor offers true 1-point cartridge

alignment to the tonearm, with a selection of

5 different tangential curves to choose from.

As the SMARTractor operates with true

tri-angular positioning, it applies to all pivot

tonearms, regardless of the effective length,

mounting distance or specic geometry a given

tonearm may ask for.

To ensure highly precise measurement, the

SMARTractor comes with a special designed

vernier scale.

This SMARTractor’s vernier scale provides

accuracy in read-out of 5/100 mm.

Precise analog tonearm alignment is impossible

without precise centering.

The SMARTractor is supplied with an universal

2-part spindle-adapter to ensure precise tting on

the platter spindle and perfect centering without

play.

Please check your SMARTractor package to

ensure that all contents are included.

All the above parts must be included to provide

perfect function under all circumstances.

Each SMARTractor was carefully checked and

tested prior 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 correctly.

To get access to all features of the SMARTractor

it is inevitable to read this manual.

DISCLAIMER

Please use all parts with care and attention!

The use of the SMARTractor is on your own

risk.

Keep out of reach of children.

The SMARTractor set contains small parts

that can be swallowed!!

The SMARTractor’s locator pin has a very

sharp point and could easily penetrate human

skin.

The manufacturer and the designer do not

take any responsibility for possible damage

or injury due to operation or handling of

the SMARTractor or any of its parts.

The SMARTractor is made from materials

that are particulary sensible to heat and bright

sunlight.

Please use the SMARTractor with the same

care as with the proper handling of analog

records.

Please clean the mirrored surface of the

SMARTractor using only a wet soft cloth!

We nd the best fabric to use is a wet

microber cloth like those used to clean

eyeglasses.

The manufacturer precisely calibrates the

SMARTractor.

DO NOT LOOSEN the screws xing the

Vernier scale on top of the black POM block

guiding the measurement scale.

Unpacking the

SMARTractor

The SMARTractor set contents the following

parts:

* the SMARTractor - completely assembled

and calibrated

* (1) white universal 3-part spindle-adapter:

(1) POM spindle ring 20 mm, (1) 12 mm

and (1) 6 mm insert for spindle ring

* (1) long stainless steel locator pin with round

reticule w/ white engraved crosshair guide

* (1) metal frame glass magnier

* (6) small self-adhesive “feet”

* (2) M3 20 mm distance bolts

* (1) printed manual

The (6) small self-adhesive feet are only needed

if the turntable features an convex or concave

platter.

In those rare events (Simon Yorke tt or Goldmund

Studio TT or Goldmund Relief mat) do use

these small feet - 3 at a time - to equalize the

SMARTractor relative to the non-at platter

surface.

The (2) 20 mm M3 distance bolts are used ONLY

when aligning a tonearm with unusual tall

bearing housing. The 2 distance bolts will give

the 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 ve tangential curves:

- UNI DIN (1)

- Loefgren B DIN (2)

- Loefgren B IEC (3)

- Loefgren A / Baerwald DIN (4)

- Loefgren A / Baerwald IEC (5)

The selection of the tangential curve depends on

your personal preference and on your record

collection.

If the majority of your records are rather

recent vintage, with production past 1985, we

suggest you align to either Loefgren A /

Baerwald IEC or Loefgren B IEC

If your record collection contains a lot of older

records from the beginning of the stereo era to

the early 1980ies we strongly recommend

aligning to Loefgren A / Baerwald DIN or

UNI DIN

If your collection features a majority of

records with classical music and / or human voic-

es I strongly recommend aligning to UNI DIN.

(1) (2) (3)

(4)

(5)

Step 1

The SMARTractor is already pre-assembled

with the 20 mm POM spindle ring (part of the uni-

versal 3-part spindle-adapter) sitting in the center

of the SMARTractor.

First place the SMARTractor - with the 20 mm

POM spindle ring - on the spindle.

Setting up the

SMARTractor

Step 2

Now take the 12 mm (tall) or 6 mm (short

and wide collar) spindle ring insert** . Now

SLOWLY and CAREFULLY place it on the top

of the spindle and ever so slightly press down.

Step 3

IMPORTANT - be carefull!

** 12 mm or 6 mm spindle insert ??

The 12 mm (tall) insert will work with small diameter spindles (smaller

then 7.15 mm diameter). The 6 mm (wide) insert will work with 7.2 and

wider diameter.

Do not press down the spindle adapter too hard or too deep. On some

spindle it will only be 2-3 mm or less. If you press too hard, you will

have a 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

and 12 mm insert

UNI P2S

If you want to measure the arm mounting

distance or P2S, rotate the central block to the

UNI P2S position, loosen the locking screw

xing the positioning arm in the black POM

block.

The engraved line on the center piece will meet

the line at “UNI P2S”.

Slide the central assembly back or forth so that

the hole for the thumbscrew is aligned with the

locking thread for the selected curve - there is

only 1 possible thread hole to move to in each

position.

Fix the assembly in place by re-installing and

tightening the thumbscrew. The thumbscrew need

only be very snug by hand tension.

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 nding

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

nished.

The pinpoint has to be located precisely over the

pivot at all times during alignment.

You can x 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.

This is 231.5 mm P2S - the white “5” being in

line.

BTW: This is the perfect mounting distance for

the FR-64s.

This is 295,00 mm P2S - suitable for a FR-66s.

Side-kicks:

Reading the

Vernier scale

The SMARTractor features a Vernier scale to

allow precise read-out of the P2S with an

accuracy of 5/100 mm.

This Vernier scale runs right to left - as does the

metric scale with increasing distance of P2S.

If you are unfamiliar with a Vernier scale, please

get accustomed to its operation.

The white numbers 1- 9 over the black back-

ground are 1/10 of a mm each. The white lines

between numbers are 0.5/10 mm each - or

5/100 mm each.

Whenever any of the white lines is absolutely

in-line with a black line on the aluminum scale,

then it denominates the 5/100 value which has to

be added to the full mm value given between the

2 white “leaves” centered by the full vertical

white line on the 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 magnier greatly increases the

visibility of the stylus when trying to align on

the single spot. It further also allows with most

modern cartridges to get a fairly good view of the

cantilever.

Place the magnier in the cut-out frame on the

clear acrylic positioning arm and pull it all the

way forward so that it seats squarely against the

clear acrylic.

It is automatically in a position to optimize focus

when viewing through the glass lens on the

alignment spot for the selected tangential curve.

The cutout for the glass magnier in the

acrylic positioning arm allows for adjusting the

side-to-side position of the glass magnier to

accommodate all different positions of the 5

tangential curves on the SMARTractor.

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 x 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 nal 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 magnier 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.

In the rare event that you have to align a tonearm

featuring by design an unusual height of the

tonearm body, you can simply use the (2) M3

distance bolts supplied with the SMARTractor and

mount them between the POM block and the clear

acrylic sliding plate.

You won’t need any additional tools for this and it

is just a 1- minute routine, which is reversible at

any time.

General note:

Technical data and specications are subject

to change without prior notice.

Designed, manufactured and assembled in

Germany

acoustical systems,

Axinia Schäfer

Am Büchele 2

86928 Hofstetten

Germany

www.acoustical-systems.com

[email protected]

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 tangential alignment to the

selected tangential curve is nished.

Please demount the SMARTractor and carefully

place it back in it’s package.

Do engage antiskating again and continue with

aligning azimuth, tracking force and SRA / VTA.

Here the SMARTstylus tool is most helpful to

get accourate settings very quick.

For further information please ask your dealer.

**July 2020

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