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- Page 1 Instruction manual KUZMA STOGI REFERENCE TONEARM (with Stabi Ref turntable) Serial Number: …. 2009-7...
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Page 2: Table Of Contents
KUZMA LTD INSTRUCTION MANUAL STOGI tonearm The Stogi Ref tonearm is very precisely engineered pieces of audio equipment. However the construction is robust and requires minimal maintenance for optimal performance. Azimut fixing Azimut adjustment Fig 1. CONTENTS: Page 1.0. General description 2.0. -
Page 3: General Description
It will accept all cartridges and can be fitted on most quality turntables. Technical data: Mass: 850 gr Effective length : 230 mm (9 inch) Mounting distance: 212 mm Offset angle: 24 degrees Effective mass: 13 g VTA adjustment: Azimuth adjustment: Bias adjustment: Cables: single Arm mount: Kuzma & Stogi... -
Page 4: Unpacking
Take the tonearm mounting protractor and place on spindle of turntable. The Stogi cut-out is similar to the standard Linn cut-out. You can also make a Kuzma cutout. Mark position of holes on the tonearm mounting board as indicated on protractor. - Page 5 3.1.2. Armbase mounting: To fix armbase to armboard you will need the correct length of three socket head screws, washers and Alley key 5 mm. Fit washers on screws and insert into underside of tonearm board and up into tonearm base. Position base so that height adjustment (VTA adjustment) screw is at top right position, i.
- Page 6 3.3. Setting up the tonearm: 3.3.1. Connecting tonearm: Check the horizontal movement of the tube to ensure that the headshell will reach the inner grooves. Due to the high tonearm mass, turntable leveling and suspension should be checked and adjusted according to the turntable manual. 3.3.2.
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Page 7: Tonearm Adjustment
The counterweight is marked with five red dots. One full rotation of the counterweight increases tracking force by 0.5grams, therefore distance from one dot to another corresponds to 0.1 grams. With the cueing device in the ‘up’ position and tube in the armrest the counterweight is turned anticlockwise (from front view) to increase the tracking force. - Page 8 If tonearm is too low, then the tonearm must be raised by releasing the screw in the base while holding the tonearm by the ‘C’ shape and lifting it up. Tighten VTA screw when the tonearm is in position, though do not over tighten. Repeat process until arm is high enough to clear record.
- Page 9 Position B: Reposition protractor, place tip of stylus on point B (B- zero point 121 mm) and check alignment at position B in the same way as in position A. If the cantilever is not in alignment then rotate protractor until it is in alignment somewhere along the line ‘x y’...
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Page 10: Adjustment Of Vta
4.3. Adjustment of VTA: VTA describes the angle between the record surface and the stylus. This angle changes as the height of the tonearm is altered. The standard angle is 15° but cartridge manufacturers work with degrees of anything between 10°- 30° so only by listening tests can one ascertain the correct angle for your particular cartridge. -
Page 11: Bias Adjustment
4.4.2. Fine Azimuth adjustment: Note: See appendix 2. The easiest way is to use an appropriate program with a test record and PC. It can also be done using an oscilloscope with a test record or by using good records in a good system and listening to the sound. -
Page 12: Adjustment Of Cueing Device
1.00 1.25 1.50 1.75 2.00 Fig. 6 Bias adjustment bias lock For maximum trackability, it is advisable to set the bias by use of an appropriate test record, ie. those with tracking bands. Please do not use test records with blank space where the tip of the needle sits on the surface rather than in the groove. -
Page 13: Maintenance
5.0. Maintenance: 5.1. General: The bearing does not need maintenance. Dust only with a soft brush, do not blow away dust. If the tonearm is mounted on a wooden armboard the base may need to be retightened to the board after a few weeks. 5.2. -
Page 14: Troubleshooting
7.0. Troubleshooting: If any problems occur with your tonearm please do not hesitate to contact your dealer. Many audiophiles do, however, find it convenient to try and solve small problems themselves and, therefore, the procedures outlined below may be followed if such difficulties should arise. - Page 15 7.4. Cartridge jumps in the grooves: See if the tube can travel towards the centre of the record and check that tube is not restricted by cueing device height or holder. See FAQ on our web site. Kuzma Ltd Hotemaze 17A SI-4205 PREDDVOR SLOVENIJA...
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Page 16: Appendix 1
APPENDIX 1 Tangential Cartridge geometry adjustment Once the cartridge has been mounted, it is necessary to ensure that the cartridge is tangential to the record grooves in order to minimize tracking distortion during playing. As the cartridge moves in an arc across the record, tracking distortion occurs and is minimized by the tonearm geometry and the angle of the cartridge in the headshell. - Page 17 To rotate or readjust cartridge: 4. Slightly loosen the screws which attach the cartridge to the headshell. 5. Holding headshell in one hand slightly rotate the body of the cartridge. 6. Recheck alignment at position A and continue adjustment until line described in point 3 is achieved.
- Page 18 10. Now rotate protractor and again position stylus at zero point A as described in 5 and 6 above, ensuring that the position of the cartridge in the slots alongside is not changed but only rotated for alignment of the cantilever in zero point A. (Fig.17) 11.
- Page 19 Appendix 2 Fine Azimuth Adjustment This can be done using an oscilloscope and a test record or by using good records in a good system and listening to the sound. Cartridges with fine profiles (VDH, Microline etc.) are more sensitive to this adjustment. On the other hand cheaper cartridges are not made so well, making fine adjustment more useful.
- Page 20 Appendix 3 Fine bias adjustment 1. Set bias and tracking force as previously described and listen to mistracking on highly Modulated tracking bands on test record. On higher modulated bands mistracking can be heard as impure tones and there will be more overtones. (See instructions on test record) 2.
- Page 21 Cartridge Protractor (Not in correct scale) Tonearm mounting protractor...
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