Cartridge alignment
Because a normal tonearm pivots about its bearing point as it traverses a record, the angle between the cartridge body and record groove will gradually vary as the record is played.
The idea of cartridge alignment is to minimise this inherent error. A simple alignment protractor is included in this manual to facilitate this.
Note: The TT50 is fully aligned at the factory for the supplied AT95E cartridge and does not require this adjustment to be made unless a new or different cartridge is fitted.
The supplied protractor allows the error to be adjusted out at two critical positions on the record surface (63mm and 120mm radius) in such a way that then minimises the error at all other positions. The protractor is simply cut out from the manual and placed on the turntable as described, a printable version is also available for download on the Cambridge Audio website at: www.cambridgeaudio.com/support.php
The procedure is as follows:
1.Move your cartridge to the
2.Using a scalpel or similar, cut the dotted line where the hole shown on the Alignment Protractor and place it over the turntable spindle. The Alignment Protractor is located in the ‘Technical specifications’ section of this manual.
The cartridge protractor can also be photocopied or downloaded from our website and printed. After copying/printing always check the mm measurement reference scale against a ruler which then makes sure your protractor is accurate. Copiers and printers can sometimes slightly distort the images they print, so if you find this to be the case make adjustments to the copier or print scaling and reprint until the scale is correct.
3.Turn the platter gently by hand so that you can carefully rest the stylus tip exactly on the cross at position A. Looking directly from above carefully rotate the cartridge body so that its sides are parallel to the protractor lines as shown.
Note: Lift the tone arm before turning the platter to avoid damaging the the needle/stylus.
TT50
4.Now turn the platter by hand and place the stylus tip at position B. Again look directly from above to see if the cartridge body sides are parallel to the lines on the protractor.
5.If the cartridge body sides are not parallel to the lines on the protractor, move the cartridge body back in the headshell a little (a millimetre or so).
6.Lift the tone arm up and turn the platter by hand to go back to position A, realign the cartridge body so that it is again parallel to the lines on the protractor without moving it back or forwards in the headshell (i.e. try to rotate the body only).
7.Again lift the tone arm and turn the platter by hand then place the stylus tip back at position B. Again look directly from above to see if the cartridge body sides are now parallel to the lines on the protractor.
8.If not, move the cartridge body back in the headshell by another millimetre or so and repeat the procedure.
The idea is to find the position in the headshell front to back that allows adjustment of the cartridge so that its sides are parallel to the lines on the protractor at both positions A and B.
Cartridge downforce adjustment
Refer to the 'Assembly/setup' section of this manual.
ENGLISH
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