Jump to content

MicroMara

Heritage Members
  • Posts

    6364
  • Joined

  • Last visited

  • Days Won

    68

Everything posted by MicroMara

  1. That would be fine . Unfortunately, I can´t open the embedded pic to have a further look into your listening space 🤔
  2. PLACEMENT Your La Scala Loudspeakers will perform well in a variety of locations but best results will be achieved using the following general guidelines: • Place on a common wall 6 to 15 feet apart. • Position them equidistant from the wall behind the speakers. Equidistant height above the floor with the high frequency drivers at seated ear height if wall or cabinet mounted. • Angle speakers toward the listener and even with or forward of any adjacent obstructions. • Placing them near a corner or wall provides the greatest amount of bass while moving the speakers away from room boundaries reduces bass energy. • Asymmetrical placement of a pair of speakers from adjacent side walls can smooth room-induced bass unevenness. • Experiment with the above guidelines to suit your taste and to compensate for your room's acoustic characteristics.
  3. Eric Burdon declares " WAR " 1970, LA Records
  4. she´s reserved for @dirtmudd
  5. You are mistaking VTA with SRA = Stylus Rack Angle The Tonearm Height (VTA = Vertical Tracking Angle) and the Stylus Rake Angle (SRA) The "big" control variable and hopefully also -screw on the tonearm is the height adjustment, the adjustment of the so-called "Vertical Tracking Angle . What the height adjustment of the tonearm is actually about, is to trim the angle of the needle's insertion into the record to the angle specified during vinyl cutting. This way you can correct the SRA (the Stylus Rake Angle). The standard for this (exceptions confirm the rule) is around 92 degrees when the needle is dipped with the correct weight. Why not 90 degrees? Because the cutting graver scratches out material when cutting vinyl, and to prevent the material from accumulating in front of the graver, you admit a few degrees, i.e. you cut at a slight angle. 92 degrees. At this point I would like to emphasize once again that the described settings can be made by ear and taste, as always. Those who have practiced ears can and should use them. The bottom line is the same as with frequency response perception: what you really hear can also be measured. What cannot be measured is often only anchored in the human psyche. Further some facts you should think about The issue here is the compliance of the needle carrier. The compliance indicates how hard or soft the suspension of the needle carrier is, which in turn carries the scanning diamond. The unit of measurement of compliance is µm/mN. It is measured at 10 Hz.Some of them measure at 100 Hz. There is also a distinction between dynamic and static compliance. The dynamic one counts; and it is obtained by dividing the static value by two. MM and MI cartridges have a higher needle compliance than MC cartridges, these have a more stiffer needle compliance Low compliance = hard suspended systems = values between 6 and 12 µm/mN Medium compliance = medium hard/medium soft suspended systems = values between 11 and 22 µm/mN High compliance = soft suspended systems = 22 to 30 µm/mN Very high compliance = very soft suspended systems = 30 to > 40 µm/mN Tonearms can be roughly classified according to the following scale Ultra light tonearm: 4 to 5 grams Lightweight tonearm: 6 to 9 grams Medium-weight tonearm: 9 to 15 grams (most of the arms used today) Heavy tonearm: 19 to 24 grams Very heavy tonearm: 25 grams and more For tonearms with exchangeable headshells this must always be included. Tonearm and cartridge as spring-mass system The mentioned values/classifications are important because the combination of tonearm and cartridge represents a spring-mass system. Like all classic spring pendulums, such a combination has a natural frequency that depends on the hardness of the spring and the mass of the whole system. This is the famous "moving mass", and only this is decisive: If the hardness of the spring increases (i.e. with lower compliance), the resonant frequency increases. If, in turn, more mass is added, the resonant frequency decreases. The excitation of the mass-spring-system and the consequences Now what happens if you excite this mass-spring-system with its natural frequency? Logically: it resonates, so that the oscillation becomes extremely upsetting. These oscillations in turn superimpose other frequencies. They lead to disturbances or booming and color the sound image or restrict the exact reproduction of the music. For example, if the resonance frequency was 40 Hz and you were playing a nice bass tune, the needle could perform a dance and jump out of the groove. Tonearm adjustment: many settings - lots of sound When you start with the vinyl hobby, you think in a naive way: screw on the pickups, swing them out, roughly adjust the counterweight, and off you go. Unfortunately a wrong way - at least if you want to listen to music with high standards. Which pickup is already perfectly produced? Which needle is mounted exactly straight? Which needle carrier is at the exact angle in the generator? Azimuth: mandatory setting of a good tonearm The most obvious production errors can usually be detected with a sharp look at the needle carrier and needle. A magnifying glass or USB microscope can help enormously. If the needle or the needle carrier is obviously mounted crooked, you should complain about the pickup at the dealer. Slight misalignments can be compensated by using the mounting bracket in the headshell. How to correct skewed needle carriers and diamonds What can only be compensated for by adjusting the azimuth on the tonearm is a diamond inserted at a slight lateral angle, as unfortunately occurs in 80% of all cases with MC pickups. If you want an exact position of the needle in the groove and thus a perfect result, you have to measure and correct the azimuth. Many do this by ear. Respect, who can do that! The goal of an azimuth measurement is always to create a channel separation that is as equal as possible by using different angular positions of the headshell. With well produced pickups, the corrections are +/- 0.5 degrees or less to achieve the desired position. This sounds like little at first, but at one degree you can see the "skew" more than clearly. Hope you can use these infos.
  6. Welcome to the forum , I think that you do not have to change the TT , you have to upgrate the Pick-Up and the phono pre amplifier. If you want to get an overview about TT´s Pick-Ups and Phono Pres , have a look there , you´ll find a lot of information about the whole TT technology
  7. The reason why I have now ordered the additional cartridges is very simple, they are all classics that I have wanted for years, but knew that they could not be installed on the MA 500 tonearm of my old TT, because it had a mass of 24 grams, that was just too heavy because of the needle compilance. With the SME 3009 and the MA505 MK II tonearms I can then use them. Then I also have enough pickups for the rest of my life . I did not want to let the snob hang out here, but I was so happy about it last night that I had to tell you.
  8. No it´s a white cotton fabric jacket , wanna try a new technical way for phonocables , it´s an experiment , I used to built them with copper strands ( AWG 24 ) in the past. Wanna know whether there will be a sound improvement , that´s why I´m doing it .
  9. At the moment I am busy building phono cables. It will be 3 new pairs with 0.7 mm ( AWG 19 ) solid core copper conductors. Over the Solid Core I pull shrink tubes so that they do not oxidize, they are then pulled into Teflon tubes over it comes a cotton fabric jacket, finally I solder them to the australien Klei Harmony RCA plugs. Gonna show you when they´re ready early next week
  10. Finally my beloved Audio Technica ATV7 , it´s the bigger brother from the AT20SLA and sounds so amazing , listend to it many times by a friend of mine
  11. My Goldring GS 900 SE Moving Magnet Cartridge
  12. I was shopping in japan one hour ago . I still had some pickups on the list that I wanted to have for a long time, are all sec.hand but in technically as well as visually perfect condition , next week I build the second tonearm on my Micro Seiki DQX 1000. They´re on their way to germany allready . My ADC XLM MK III Moving Iron Cartridge
  13. We all can imagine which present do you need
  14. You must not be left alone either WOW a real beauty
  15. the Sony is due for sure ...we don´t
  16. You´ll find all answers in the above mentioned link, page 3 , scroll down, guess you haven´t watched this one , so why to hell I´m doing this here 🤪
  17. I saw them and listened as well , thanx Dave , good old Rock´N Roll , Good Life show . the second life tune was called midnight man.So this tune came into my mind
  18. Thanx a lot Heinz , you´re right beside the room acoustics there´re many other important facts on the listening experience to be involved , but I suppose that no one will read close to 600 pages For this reason I put a simple grahic in this thread that will be understood quite easy for everybody, even it´s in german language, pics speaking for themselfes. Of course, this graphic does not claim to have the same content as your link did. Objective acoustic - Psycho acoustic- Subjective acoustic Physics Ear Subjective acoustic filters filters Sound pressure- Metrics, Volume Emotions level Sharpness Measurement Calculation Questioning
  19. we all are, no matter on which continent we live
  20. I can borrow you some $$$$$$ for a while without interest rates if you want ....
  21. finding heaven on earth means losing the ground under your feet
×
×
  • Create New...