Tonearm geometry

The subject of tonearm tracking is intensively covered in References 52 and 226. Tonearm’s back link uses low-noise ceramic rolling bearings. The raiser is equipped with a highly sensitive release antenna and a hydraulic lift with rubber lift bar, ensuring safe, smooth and dependable operation. Recently, Paolo Nuti used. So, using some straightforward geometry, let's clarify how it comes about. The '4 mm back' isn't along , or even parallel to, the line from spindle to pivot. Forgeret about the Ikeda specs because you can change the effective length of any tonearm changing the pivot to spindle distance ( not making the change through overhang. Arm Distance (Spindle Centre to Base Centre) Mounting template indicates 8. See full list on waynestegall. B. After my investigations, I decided to relieve users of Amadeus of the issue of setting tonearm geometry and to use a fixed geometry. The Phantom significantly advanced tonearm Vliet writes: “After 8 months of “on hold”, due to higher priority of other projects, I’ve proceed with this special restoration project, made a new prototype docking frame and, as experiment and reversible modification, a tonearm base extension so it now has the same tonearm geometry as the EMT 927 and can be used with all EMT 927 Built around unique geometrical and mechanical approaches, combined with tight tolerance building and carefully chosen materials, the CB tonearms will allow you to unleash the full potential of your cartridge. Apr 20, 2011 · However, unless one appreciates the importance of Linear Offset, it is impossible to have a complete grasp of tonearm geometry. Here one can see the basic parts of the Technics tonearm. We reveal what to listen for, and take you well be 20 Nov 2019 Unless your turntable comes with its manufacturers own tonearm you will need to select an arm to suit the While careful geometrical design of the arm can reduce this tracing error it cannot remove it except at best at In addition, the headshell (to which the cartridge is attached) is cranked at an angle relative to the tonearm axis as defined at the line between the This is known as the offset angle of the tonearm. ” Tonearm geometry with the lowest distortion worldwide, you will hear it immediately the geometry had to be calculated by hand in the 60s, because you did not have any computer calculation programs yet, this could never be the optimum, because the 3 parameters for the geometry are interdependent. 00 The protractor is designed to align the cartridge to be tangent at two points near the beginning and end of an LP, minimizing the distortion overall. not the material, not exotic armtube materials or mimics can eliminate a fundamental distortion that exist due to a wrong and bad geometry. ) D= distance tonearm bearing to center of gravity of headshell assembly The centre of gravity is about in the middle of the generator assembly, a slightly different value here does not change the result substantially. ) Ikeda IT-407CR1 ($6,500 USD) Ikeda has a long and storied history of analog playback going back to the 1960s—maybe you remember a company named Fidelity Research? Mr. Tonearm Safety Raiser Designed to mount on a manual turntable, the AT6006R Safety Raiser automatically lifts the tonearm at the end of a record, protecting the stylus from damage. . Kessler and B. The heavier counterweight is however important for the SPU-users and can be acquired . Nov 01, 2018 · The effective length is 228. The effective length of the tonearm was increased to allow for the use of Stevenson, Lofgren A (Baerwald) or Lofgren B geometries. Schleif The original Phantom Model B-44, recepient of the "Editor's Choice" Award from Harry Pearson (October 2006 issue of TAS), a Class "A" rating in 2005 from Michael Fremer, and runner-up for both Analog Source Component AND the 2006 Product of the Year award in Stereophile, was our first really new design following the award-winning 2. After year 18 Jun 2015 VTA, tracking force and side bias should be fine tuned by ear to significantly improve your sound quality. Arc Angles: Optimizing Tonear I don't know which alignment geometry U-Turn uses for the Orbit tonearm so I included the three most common alignment geometries, Lofgren A (Orbit A), Lofgren B (Orbit B) and Stevenson (Orbit S) for comparison to the Debut  10 Apr 2016 With Acoustical Systems, however, this is different: The Aquilar tonearm is based on an entirely new calculated geometry. TA-110 has a standard 5-pin DIN connector for tonearm cable. Teflon isolation and electronic test pins. K. At those points HTA is zero (note: the longer the tone arm’s effective length, the smaller the offset angle. The set up for The Tonearm is really straight forward and self explaining. Each type of geometry has its benefits. 9 mm distance from the center of the platter. - Inner scale to be applied with main counterweight. on a Thorens TP16. Improved tonearm geometry. Each tonearm is meticulously built like a Swiss Chronograph with rare precision and craftsmanship. Double Birch/Thales geometry. The fruit of many years of creative research, a handmade prototype 'V' was shown to prospective distributors at the American and German shows two years ago, but it has taken a long time to get the arm into production. Tonearm Geometry and Setup. The later 3009 and 3012, V, V-12, and M series are designed for a " Optimum geometry of tonearms has been the subject of several articles over the past three decades, the earliest complete mathematical study being that of H. Overhang&nb GEOMETRY THALES EASY. Data can be searched by manufacturer or parameter and model names link to library pages of original manuals where available. The tonearm includes a lift and arm bench, as well as fixed lowest resistance and capaticance, symetrical cable with Neutrik RCA plugs. Stevenson in the May and June 1966 article Pickup Arm Design and based on the dimensions of several phono cartridges in my inventory, I designed the tonearm for Amadeus Dec 06, 2020 · Reed 5A tonearm introduced as angling- 90o -tangential-pivot-tonearm, it is based on Double Birch/Thales geometry and will complement our tangential tonearm lineup. Braccia Tonificate, Braccia, Consigli E Trucchi, Ingegneria  18 Feb 2009 ToneArm Geometry. material of the armtube and Vaccination only has an impact on resonance and vibration coming from the plinth (engine vibration and SME Tonearms 3009 & 3012 Parts Tools Templates & Manuals SME Custom Bronze Parts & Full Custom Cardas Rewiring . Tonearm Geometry and Terms. Schröder CB Tonearm. G Oct 17, 2019 · A short straight tonearm has less mass and can respond nimbly to pull more musicality from the groove of the record. Turntable center spindle distance to center of tonearm tower (10”) 233mm, (12”) 288mm Reed 5A tonearm introduced as angling- 90o -tangential-pivot-tonearm, it is based on Double Birch/Thales geometry and will complement our tangential tonearm lineup. Best Tractor is just a tool and it is prepared in accordance with the Tonearm Geometry as defined by the manufacturers. Constructed from carbon fibre - nanotube composites, the Nanotube One is the world’s stiffest and most highly damped tonearm. Their tonearm cable must also be changed, one way or the other. One reason for unlinking the calculator might be to evaluate a tonearm's geometry by inputting effective length, angular offset, and stylus overhang directly into cells A3, B3, and C3, respectively. Traditionally, SME arms are fixed headshell arms, with a fixed cartridge mount and fixed headshell angle (as opposed to fixed cartridge offset angle). The cable is 1,1m long. a few days ago i started a new thread about getting a new tone arm for my Lenco l78. It's the first solution by Thales where none of the bearing-points  1B1, 2B1-1 B2, 2B2-1B3, 2B3-トーンアームレバー. We have increased the effective length of the tonearm to allow for the use of Stevenson, Lofgren A (Baerwald) or Lofgren B geometries. If you are aiming for a romantic, colored tonearm : than do not choose the CB tonearms for this purpose. This universal type counterweight can be used from 17 to 35 grs cartridge weight including head shell. G. As The Abis brand name was changed to Sorane in 2017 summer, the products in this website/review are now called the Sorane, with unchanged model number. 8 Jul 2017 Basically, it's geometry. 8mm for the latter arm – this promises better tracking thanks to improved geometry but won’t of course fit some turntables. Let a tonearm having an effective length L (distance from the centre of the pivot to the stylus tip) be mounted on a plinth with its pivot d away from the centre of the record, as shown in the illustration left: where θ is the angle included between the lines L and r, and φ is the tracking angle between L and a line tangent to the groove at the needle point. Tracking error increases distortion and decreases fidelity. The award-winning Feickert Analogue Universal Protractor is an invaluable tool for aligning your phono cartridge's path across the record. A longer tonearm is better at maintaining the right tracking angle for the needle as it tracks across the record. TK-850S MKll is fitted with a standard head shell and can easily be changed with other standard head shell (cartridge). It makes no difference if the Rega mount you have is the later 3 point mounting or earlier single hole mounting. The geometrical basis for the Easy tonearm is a novelty in tonearm-design. com Dear @sdrsdrsdr : There is no problem with Ikeda geometry. V. lt. Mar 16, 2015 · This geometry produces two “null points” where the cantilever is tangent to the groove. The tonearm geometry allows for a Baerwald alignments which is IEC recommendations. The line O-B (red) is the cartridge stylus excursion path of a tonearm with a tracking angle error of Θ. During the many years I have been investigating and designing turntables and tonearms, I have asked many serious  Therefore, radial pivoted tonearms have gained acceptance because they allow a The geometrical basis for the Easy tonearm is a novelty in tonearm design. Tonearms by Schröder Frank Schröder’s attention to detail and grasp of the physics involved in ideal tonearm behavior is second to none. Just how to set anti-skate is somewhat of a controversy. Armtube suspension system is similar to the one used in Reed 3P tonearm. Sorane SA1-2 Tonearm. In addition, its geometry requires no anti-skate mechanism to counter the inward forces, as is utilized in longer straight tonearms. " So often, what is painted as new and innovative turns out to be something someone thought of long before. Arm Effective Length (from arm pivot to stylus): nominal 9inch. Components were continually tried from prospective Please note: The AS-212S, AS-309S, RS-212D and RS-309D tonearms have a Japanese geometry, which will not directly fit the normal Baerwald alignment. Effective Length, Vertical Tracking Angle (VTA) Stylus Rake Angle (SRA) Azimuth; the good and the bad Adjusting VTA. 1956/1957 that presented data essentially the same as that of. • Excerpts from KAB USA website: The high fidelity tonearm has a maximum tracking error of around 2 degrees which is good. tracing distortion). Regularly updated, it currently contains mounting dimensions and alignment data for over one thousand turntables and tonearms. 1). Investigated are the mechanisms by which a tonearm and cartridge system can generate frequency-modulation distortion during playback of phonograph records. However, before we turn to this, let me briefly introduce Acoustical Systems to you: Acoustical Syst 2019年9月21日 ステラでは、米国GRAHAM ENGINEERING(グラハム・エンジニアリング)の最 高峰トーンアーム「PHANTOM Elite」にさらなる剛性を付加した上位モデル「 PHANTOM Elite Ti」を発売する。受注生産モデルで、価格は10  electron pair geometry. See full list on vinylengine. B-44 tonearm The Graham Engineering 1. Baerwald. In addition, the headshell (to which the cartridge is attached) is cranked at an angle relative to the tonearm axis as defined at the line between the pivot and the stylus. 4. Martin D. With the exception of the Magneglide azimuth adjustment, the Phantom sets up like the 2. In theory, the shorter the arm, the less chance for vibration and thus the greater the stability. So let’s go through it together (because you will be "scrolling" it's probably a good idea to drag the image to your desktop so you can refer to it as you read). com Arc Angles: Optimizing Tonearm Geometry Page 2 The latter feature is necessary to achieve the first, but I know from three decades of writing on this subject (footnote 9) that it puzzles many people. 2P2 – center of the circle, which is drawn through three points -2B1,2B2,2B3,- axis of rotation of the front link component 1B1,2B1 = 1B2,2B2 = 1B3,2B3 – tonearm lever. TK-850S is fitted with a standard head shell and&n Phono tonearm geometry is born: 1937/38. Notice that line O-B is longer that line O-A. SME Tonearms 3009 & 3012 Parts Tools Templates & Manuals SME Custom Bronze Parts & Full Custom Cardas Rewiring . Note this is why longer tonearms are better. The RB880 has improved bearings and a tightened spindle fit tolerance over previous models (e The Audiomods Series Six Tonearm Firstly we need to talk about the three versions of the Series Six. Else you can choose a 5 pin tonearm connector made by me. the idea of building my own tonearm was there but  How to calculate tonearm geometry. All modern tonearms are arranged so that the stylus swings beyond the distance between the turntable spindle and the tonearm pivot point This is called the overhang of the tonearm. I knew the answer because I had read about this subject in The Radiotron Designer’s Handbook, Fourth Edition, 1953 pages 723 to 727. The geometry of where electrons are in relation to a central atom. Marc's first 12-inch arm design is like his first arm defined by its rigidity, stiffness and sound. Constructed from carbon fibre - nanotube composites, the Nanotube One is world’s stiffest and most damped tonearm. backgrounds in mathematics published in quick succession their groundbreaking calculations for best approaching 11-giu-2015 - Questo Pin è stato scoperto da JongHo,Jung. As Chester Rice, co-inventor of the moving-coil loudspeaker, once ruefully   While tonearm geometry seems to be very 'simple' in mathematical sense there are many unresolved questions in the actual sence. electron pairs in four locations will repel and end up 109. Feickert Analogue Universal Protractor Is an Essential Tool, Includes Instruction Booklet. We have a habit of forgetting, and that applies not only to inventions, but to knowledge of other kinds as well. Tonearm geometry is shown to influence the relative amount of distortion, and, in particular, tangential tracking designs are shown to be inherently less susceptible to horizontal mode distortion than conventional offset designs. But the groove on the record is oriented so that motion corresponding t Geometry based on the SME V-12; dynamic mass sufficiently low to accomodate for highly compliant MM pickups. Cartridge / Arm matching, Effective Mass, Resonant Frequency, VTF, Compliance The original and best tonearm database! Often copied but never beaten. 6mm, compared to 243. 5 tonearm, originally introduced in 1990, was a thoughtfully executed design that logically addressed all of the basics of good tonearm performance—geometry, resonance control, rigidity, dynamic stability—with effective, sometimes ingenious ideas, while providing exceptional ease and flexibility of setup. No miracle at all and always replicable. 00. • The tonearm geometry allows for a Baerwald alignment (also the IEC recommendations). The RP1-XG tonearm evolved from an earlier design which was in production from 1981. They design the tonearm geometry with an offset headshell or an s-shaped arm pipe and use tracking geometry that incorporates “stylus overhang. Stereo Times Review of Enterprise MK3C Tonearm James 2019-05-18T10:32:33+01:00. The geometry and mounting dimensions for the new type 3 point mount Rega tonearms is identical to their older arms – In addition to the single large 24mm hole, the 3 point mounted Rega tonearms need 3 small holes for either wood screws or M3 Allen bolts. The present invention is a tangential tracking tonearm mechanism, wherein the tonearm bearing subassembly has two rotary bearings in the lateral plane and a coupling linkage built into a compact The SAT LM-12, unlike the Air Tangent, is a gimbal bearing based tonearm employing a straight, 12-inch carbon fiber arm tube (with a detachable and rotable headshell for azimuth adjustment). Total Items in Cart: 0 Total Amount: $0. Because of this, turntables with pivoting tonearms must be set up for  Hey guys. 00 $1,000. A smaller offset angle produces less skating. Dec 04, 2020 · (This might be the tonearm Dr. Jig to set the pivot-to-spindle distance provided; no need for a ruler, the jig places the tonearm exactly in the right position The Best Solution for Aligning Your Phono Cartridge with a Wide Variety of Tonearms: Dr. The longer arc radius of a long tonearm deviates from the ideal geometry less than a short one. In the years around the start of the Second World War, gifted engineers with strong. Jan 22, 2021 · only a perfect geometry of the armtube guarantees a low distortion. I repurposed it to adjust tone arm pressure by using a screw and two washers at the rear of the cabinet to adjust the pressure. BACK TO ENTERPRISE TONEARM REVIEWS 16 Mar 2015 This drawing explains tone arm basic geometry. Most all tonearms will have calibrated, adjustable anti-skating. • Counterweight will work with headshell+cartridge mass approximately in the range 20 to 28g In tonearms he prefers captive bearings to unipivots, to which end he developed a “tetrahedral bearing” that “offers both a captured design and minimal friction”: “It simultaneously integrates both vertical and lateral bearing movements,” which arrangement, he argues, ensures the shortest, most direct, efficient, and effective path so spurious “energy passes through only one structure before it dissipates in the armboard. Effective length according to Loefgren A: 254 mm. , Tonearm Pivots; Horizontal and Vertical. 16 May 2017 This is the first post in a series dedicated to tonearm geometry. Thanks to Wally Malewicz for providing it. Scopri (e salva) i tuoi Pin su Pinterest. Keith Howard | Apr 8, 2010 | Mar 8, 2010. Just how important this is for the audio quality is shown by a comparison of the 2 Feb 2021 This easy swap is down to the geometry of Origin Live arms being identical to all Rega arms. This tonearm is still relatively expensive in North America, but it is a very good value in England and Europe. The tonearm geometry allows for a Baerwald alignment (also the IEC recommendations) Counterweight with Inner/outer scale. I will try to avoid repeating the obvious and the well-researched, focusing on things that are often overlooked. Seagrave stated in his   Arc Angles: Optimizing Tonearm Geometry. Baerwald alignment has a zero tracking angle error at 66mm and 120. The Tosca™ is a medium mass tonearm, and the combination of counterweights provided with it allows use of most cartridges currently available. Sheldon Cooper would pick if he was an audiophile. Feb 28, 2020 · Martin Colloms gets to grips with the new SME Series V The Series V tonearm is on sale at last, albeit in limited quantities. Mindful of the great Greek's axioms, they are radically reshuffling the geometry of record players. These fasten the arm to the board. 2 in terms of VTA, VTF, antiskating, and geometry, which means setup is both convenient and repeatable—important features for a tonearm that lets you easily switch armtubes. Bauer in 1945and John Seagrave in. Döhmann Audio turntables are designed to be used with a large selection of tonearms. Tonearm geometry is optimized for minimal tracking error. That is one of the advantages of a longer tone arm). 5o apart, three locations 120o, two locations 180o and one location no separation of el types of turntable tonearm. Each tonearm is designed and based on its own geometrical parameters (pivot to spindle distance, effective length, overhang and offset angle). Perfect resonance control, an outstanding dynamic balance, perfect geometry and straight forward handling are some of the fantastic features of this outstanding tone arm. The geometry of the XG is based o to check the tone arm geometry of your record player and to install the pickup ideally aligned (offset angle and overhang) to keep distortion to a minimum. Reed 5Aは、 ターレスの定理動作に沿った制御を2つのバーチジオメトリを利用し、ベアリング 機構のみで  The tonearm geometry allows for a Baerwald alignment (also the IEC recommendations). Improved tonearm geometry We have increased the effective length of the tonearm to allow for the use of Stevenson, Lofgren A (Baerwald) or Lofgren B geometries. Acoustical Systems Aquilar – 10" Reference Tonearms, geometry: UNI-DIN. Feb 18, 2009 · The line O-A (blue) is the cartridge stylus excursion path of a parallel tracking tonearm aligned for zero tracking angle error. Pisha geometry, One would assume there would at least be agree-. The third version is the 610; this is a 10. ” When done correctly, you get two points on the tracking arc where the stylus is tangent with the groove, and the tracking error is zero. DIN connector inside the arm base. Neither does the& The tonearm geometry allows for a Baerwald alignment (also the IEC recommendations); Counterweight with Inner/outer scale; Counterweight will work with headshell+cartridge mass approximately in the range 20 to 28g; TA- 210 is fitted with& 6 Dec 2020 Tonearm geometry is optimized for minimal tracking error. Korf Audio has done extensive proprietary r Schön Tonearm Alignment Gauge This unique tonearm alignment gauge allows you to check the tonearm geometry of your record player / turntable and to install the pickup ideally aligned (offset angle and overhang) to keep distortion to a&nbs The tonearm geometry allows for a Baerwald alignments which is IEC recommendations. Theoretically, the longer the tonearm the longer it will maintain the correct a 8 Nov 1981 What brings to mind her ringing phrase is that tonearm designers these days are evidently looking at Euclid. JMW-9-Metal-Unipivot $1,000. Anti Skate Bias: Tonearm geometry creates a force that pulls the cartridge toward the center of the record. Analytic Treatment of Tracking Error and Notes on Optimal Pick-up Design Michæl D. 10 Feb 2020 The new OA2 tonearm for the Orbit Turntable by U-turn Audio includes a new gimbal bearing design, anti-skate feature and improved geometry. If your turntable is factory pre-drilled and fitted The Rega OEM RB880 tonearm is packed with new features pushing the boundaries of tonearm design. Tone arms are ideally set up to all. reed. The specifications and manufacturer are the same. TK-850S is fitted with a standard head shell and can easily be changed with other standard head shell (cartridge). アームのタンジェンシャル動作を独自の機構で実現. Based on the comprehensive analysis of J. mint. There are two 9" versions called the 609, these are available for Rega and Linn geometry; they simply drop into either Rega or Linn armboards respectively. Nov 14, 2018 - This drawing explains tone arm basic geometry. The TA-100 can ideally be combined with all SPU cartridges. As with all Rega OEM tonearms each one is meticulously hand built by a team of highly skilled technicians. Ikeda is still around, and these gorgeous tonearms are still being made by hand in Japan. Anti skate bias counteracts that force, seeking to equalize the pressure of the stylus on both sides of the grooves. Horizontal Pivot: An axis of rotation allowing Horizontal swing of the tonearm. The meaning of the blue line labeled “pivot to spindle” is obvious. Whether you select the carbon fiber arm wand version, or his limited production wood wand version, the reproduced timber … Decades of experience with tonearm design and an absolutely precise engineering process make the EINSTEIN The Tone Arm an outstanding product. Additionally, the Phantom III has removable armwands that are available in three sizes (9″, 10″, and 12″) so the ’arm can be adapted to the length requirements of the Phono tonearm overhang and offset angle were established as essential features in order for a pivot tonearm to reach the best possible geometry, thus giving the lowest derivation from the tangential ideal for that 70 to 95 mm of grooved radius in a 12-inch record. Optimum geometry of tonearms has been the subject of ment on this design parameter. x series arms. In most record players, the tonearm pivots on one point, so that the headshell, cartridge, and stylus swing out an arc over the record. Outer scale to be applied when extra mass ring is added Turntable Geometry: Technical Papers Baerwald, H. Tonearms Demo / Used / Closeout Cleaning Machines Accessories Cartridges Custom / Designer VPI House Tonearms. Detachable headshell and tonearm cable, with standard SME-type connector Download the RS-309D Userguide here Download Armbase fixing location drawing here Download Mounting template drawing here; Please note: The AS-212S, AS-309S, RS-212D and RS-309D tonearms have a Japanese geometry, which will not directly fit the normal Baerwald alignment The tone arm came with a wire attached to the rear of the tone arm, which is used to raise the tone arm when it is installed in a RP-152 RCA record changer mechanism. The problem is to understand how the tonearm/cartridge set up alignment works. (There also is the  A Problem in Applied Geometry. The Phantom III tonearm has two mounting options: a custom Graham circular base or an SME-type mount that facilitates connection to armboards cut for slotted SME bases. Tonearm Alignment for pivot tone arms. Jan 17, 2016 · Headshells containing fixed-position holes (such as those of the venerable Rega RB300 and Naim Aro) assume that the geometry of the partnering cartridge is such that correct alignment will be achieved using the holes supplied. Any error of this type adds distortion that a linear tracking tonearm does not introduce. The Nanotube One tonearm is a highly evolved design. NOTES: The Sorane SA1-2 is the same product as the Abis SA1-2. Combined with the Circle 25 Turntable, the Nanotube One forms a highly optimised, reference level analogue replay system. M=Mass of headshell+cartridge+tonearm tube (11Gr. But more on that in a moment. The Helix One and Helix Two turntables have been fitted with SAT, Graham Engineering, Kuzma, SME, TriPlanar and other well-known arms. AUDIO-TECHNICA AT6006R トーンアームセーフティレイザーがDJ・VJ アクセサリストアでいつでもお買い得。 In my case the geometry of a Thorens turntable and SME arm left very little space to install it, so that I had to disregard parts of  2020年8月19日 トーンアームジオメトリは IEC推奨のBaerwaldアライメントに準拠する。内部 配線には優れた導通性能を持つPC-Triple C導体を採用したSAEC製アームリード 線を使用する。 カートリッジにMM  The RP1-XG tonearm evolved from an earlier design which was in production from 1981. Overhang: The distance past the spindle center-pin the stylus will be when the tonearm is rotated over the spindle. Inner scale to be applied with main counterweight. Apr 08, 2010 · As Chester Rice, co-inventor of the moving-coil loudspeaker, once ruefully observed: "The ancients have stolen our inventions. Pivot to Spindle Distance: A straight line distance from the spindle axis to the tonearm's axis of horizontal rotation. What does the tone arm do? A stable and slightly longer tone arm (12″ vs 9″) will cut back on various types of audio distortions you might encounter (ie. That arm explored some of the principles which are put into effect in the XG, which is an abreviation for Export Gold. I suppose that the actual geometry of my arm is similar to the above simulation. So let's go through it together (because you will be  You may also customise the alignments to be compared by entering alternative geometry for your tonearm, or by entering the data of different tonearms for  tonearm geometry by B. 5 inch. The geometry of the XG is based on the same theory as the earlier arm, and is optimised for LP records. 5" arm with a spindle-to-pivot distance of 239mm. In other words, all tonearms have different geometry and needs a specific (unique) arc and null points on it for accurate alignment of cartridge/stylus! Others, don’t know why they use a particular geometry or how much overhang they use. this is the first and most important thing with a tonearm. Nov 06, 2016 · The trade-off of increased groove holding is increased groove wear due to the large amount of tracking error inherent in the geometry of the tonearm. Our original tonearm was only compatible with Stevenson. Fulcrum distance to turntable center: (10”) length 238 mm offset angle variable, about 17° - 25°, (12”) length 288mm . I am not familiar with the popular 312 model, but based on the virtually universal praise it has received, it most likely also deserves to be in Class B. In combination with the Circle 25 turntable, the Nanotube One forms a highly optimised, reference level analogue replay system. Overhang, Pivot to Spindle Distance, Null Points. The completed S  Many designers eulogize about the virtue of ultimate rigidity and therefore apply it to all aspects of tonearm design, and B or Satori II as these are both compatable with standard Rega arm geometry and arm boards on our turntable pr Beware: the geometry is a bit more complex than that. Unfortunately, tonearms whose headshells contain fixed holes will not allow for correct alignment of all cartridges. Below is the scheme of Double Birch/Thales geometry (Fig. - Outer scale to be applied when extra mass ring is added. Please read our recommendations for alignment of RS and AS tonearm models here. Operating www.