Kuzma Air Line, Instruction Manual

Page 1: ...1 Instruction manual KUZMA AIR LINE AIR BEARING TONEARM on Stabi XL turntable With silver filters Serial Number 2010 4 ...

Page 2: ...ription 3 2 0 Unpacking 4 3 0 Setup description 5 4 0 Air supply Setup 6 9 5 0 Tonearm Setup 10 14 5 1 Basic Setup 10 5 3 Adjustment of tracking force 10 5 4 Adjustment of tangential geometry 11 12 5 5 Fine horizontal levelling 13 5 6 Adjustment of VTA 13 5 7 Adjustment of azimuth 14 5 8 Adjustment of cueing device 14 6 0 Operation of the tonearm 14 7 0 Damping 15 8 0 Zero switch kit 16 9 0 Mainte...

Page 3: ...ittle brown oil is collected into plastic bottles from the reservoir filter and the automatic sensor system three black tubes into bottles Silver filters are positioned separately nearby the tonearm and they dry the air further and remove any oil mist from the compressed air This is automatically drained into holder stands The compressor is equipped with a safety valve and switches off in case of ...

Page 4: ...sported with oil inside unless you can guarantee that it will be in a vertical position at all times Position the compressor on a hard surface with plenty of air for ventilation Do not position it in a closed space sun or in temperatures below freezing The compressor will be connected to the mains voltage 2 2 Tonearm box On top of the box you will find this instruction manual After lifting the top...

Page 5: ...ock the tonearm in the armbase this ring will hold the tonearm at the same height but it can still be rotated horizontally This is important when adjusting tonearm geometry Check that the scale for VTA in front of the main base is in the middle position with the edge in line with the thicker mark This means that the actual VTA can be precisely adjusted plus minus 5 mm If this is not the case move ...

Page 6: ...t turn ON compressor it will take a bit longer time 3 5 minutes to fill the reservoir from zero to 8 bars But the compressor must be connected to the air supply tube Note The compressor has a safety valve and overheating protection Note Do not position it in a small non ventilated space Note The compressor is factory adjusted to a higher pressure 8 bar 120 psi than quoted in the Compressor Instruc...

Page 7: ...bottles Compressor oil level in bubble Compressor rear view air intake filter At the side of the compressor is a glass bubble which will show the level of oil when the compressor is not working Wipe any spillage of oil and fix the air intake filter on to the metal tube Locate the double PVC drain bottle which have three black quick fit fittings at the top end of bottle There are three black tubes ...

Page 8: ... is plugged in at compressor output See page 6 4 3 Silver filters dryers Note Keep the silver filters in an upright position They might leak otherwise Note They should be sealed otherwise the compressor can not build up pressure The silver filters which are positioned near the tonearm have an automatic drainage system When full air pressure is reached in the compressor and compressor stops open va...

Page 9: ...ly seal the automatic drain systems in these dryers filters 4 4 3 Tonearm s air pressure in the bearing Note When tonearm is not in use the valve on the tonearm should be in the closed position You should not move the tonearm unnecessarily Open the valve on the tonearm and the small pressure indicator will show a similar level of air pressure 4 4 5 bar as on the right hand pressure indicator on th...

Page 10: ...irst unlocking the VTA lever Put the alignment protractor on the platter without a record Be careful not to touch the cantilever Rotate the tonearm so that the base is parallel to and touching the narrow part of the protractor This will precisely position the tonearm Fix the tonearm with the Allen key 2 5mm Due to its special construction it is not necessary to over tighten If necessary due to the...

Page 11: ...ort will slide along the cueing device rod with a certain friction The tonearm will move to a certain distance Now repeat the same in the other direction A big difference in the distance travelled means that the tonearm is not horizontal Try to adjust the level of the turntable again especially in the direction along the bearing shaft 5 4 Adjustment tangential geometry Protractor position Put a re...

Page 12: ...e tonearm will solve the problem The tip of the diamond must travel parallel to the centre line even if it is in front or behind Now simply position the cartridge backwards or forwards When you are sure check by actually lowering the tip onto the protractor The cantilever will deflect due to the tracking force When this is complete the needle should travel along the line You must achieve a tangent...

Page 13: ...ht at the back At the same time the whole assembly will drift sideways in one direction or only move very little Try the same experiment above the outer perimeter of the LP and also at the inner grooves The tone arm is correctly levelled when Above the outer grooves the whole assembly moves slowly away from the record Above the middle of the grooves it stays more or less stable or has a very small...

Page 14: ...in construction 5 8 Adjustment of the cueing device The cueing device has no damping for motion as is usual Due to the construction it is not needed It can stay in any position and can be precisely cued on the record Using the Allen key 1 5mm to release the small knob which holds the lever and rotating it we can adjust the height of the cartridge above the record Note Cueing device level resistanc...

Page 15: ...and rotate the paddle screw into the trough with Allen key 1 5mm To secure paddle at the desired height fix it with the rotating CCW plastic nut while preventing paddle screw rotation with an inserted Allen key Optimisation The only way to reach optimum damping is by experimentation Start with the height of the paddle when the needle is in the groove so that the tip of the paddle is just touching ...

Page 16: ...water brown oil released depends on the working hours of the compressor and the humidity of the air In winter months there is less Water will be collected in the PVC bottles Air pressure will push liquid from the first into the second bottle When the second bottle is half full unscrew it and empty it From the silver filters small amounts of water will drain into the supporting stands Lift up the f...

Page 17: ...aring will be dry and you can gently slide back the bearing Move it a few times back and forth Fix back the blocking plate Be careful to also insert the cueing mechanism bearing in the up position Press gently and fix it Then align the plate vertically with the main tonearm base If the cueing mechanism is too hard to move unlock the plate so there is less pressure against it Check loops and if nec...

Page 18: ...lters and the compressor Check working cycle when the arm is operating The compressor should take two minutes to build up pressure from 6 to 8 8 5 bar It should then cool down for 2 minutes If the working cycle is longer or the cooling shorter there is a leak in the system or a damaged compressor When the arm is not operating valve on the arm closed and arm meter shows no pressure the compressor w...

Page 19: ...than others If possible the compressor should be connected to a secondary electrical circuit then the audio system If this is not possible then the compressor should be as far away as possible from the audio system connected to the mains A noise filter on the compressor together with a long mains cable might help See also Zero Switching kit 8 0 NOTE Check our web site for frequently asked question...