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Summary of Contents for Kuzma 313VTA
- Page 1 KUZMA STOGI REF 313VTA TONEARM Instruction manual Serial Number: ….. 2009-11...
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Page 2: Table Of Contents
KUZMA LTD INSTRUCTION MANUAL FOR 313 VTA tonearm The Stogi Ref 313VTA tonearm is a very precisely engineered piece of equipment, however, the construction is robust and requires minimal maintenance for optimal performance. VTA lock azimuth lock VTA tower&knob Fig.1 Ring fixing Cueing device adjust. -
Page 3: General Description
Effective length : 313 mm ( 12,3 inch) Mounting distance: 212 mm Offset angle: 17.50 degrees Distance from spindle to horizontal bearing: 300 mm Effective mass: 13 g VTA adjustment: Azimuth adjustment: Bias adjustment: Cables: single Arm mount: Kuzma-Air line... -
Page 4: Basic Setup
1. Unpacking Open the box carefully and remove the top covers. First remove the armbase and prepare it for fixing onto the turntable. Be sure that the armboard on the turntable has the correct cut-out (main central hole must be 40 mm in diameter). - Page 5 Headshell removal and fixing: This tonearm has a detachable headshell and fixing and positioning it has no negative effect on tonearm performance. The whole headshell is fixed with one Allen key 2 mm. Insert it in the top hole and release screw with Allen key for at least one turn (ACW). (Fig.2&3) Disconnect cartridge pins, remove Allen key and pull out the headshell.
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Page 6: Adjustment Of Tracking Force
4. Adjustment of tracking force Balance the tonearm with the tracking scale, which must be at record height. Rotate the counterweight towards the tube to increase tracking force. Rotating the counterweight for one red dot changes tracking force for approximately 0.15 g. Check that the cueing device is at the correct height (see paragraph 9)! 5. -
Page 7: Adjustment Of Azimuth
7. Adjustment of azimuth To make azimuth adjustments, release the two screws locking the mechanism at the centre top of the main tonearm tube, with Allen key 2mm. Under the main tube is a tiny rod with a hexagonal screw. Insert the Allen key 2 mm into the screw (it may feel loose), rotate it slightly and it will alter the azimuth. -
Page 8: Adjustment Of Cueing Device
2. Cartridge is too close to the record edge: Check if the tube travels too much toward the centre of the record- check that position of the tonearm is correct with protractor for distance. 3. Headshell cannot be removed- check that the screw is released enough with Allen key. Kuzma Ltd Hotemaze 17A SI-4205 PREDDVOR... -
Page 9: Appendix 1 (Tangential Geometry)
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 10 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 11 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) Fig.17 Rotation at A 11.
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Page 12: Appendix 2 (Fine Azimuth)
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 13: Appendix 3 (Fine Bias)
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 14: Protractors
Cartridge Protractor ( Not in correct scale) Tonearm mounting protractor...
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Questions and answers
Hi, which aligniament shall be used for REF 313 VTA ?
The Kuzma Stogi Ref 313VTA tonearm should use a cartridge alignment protractor specifically designed for the Kuzma Stogi REF 313 & REF 313 VTA tonearms to ensure proper alignment.
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