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MicroMara

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MicroMara last won the day on November 5 2021

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About MicroMara

  • Birthday January 13

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    Germany Latitude 51.4046 / Longitude 7.2583
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    F Y I ...my topics....if you´re interested in .......

    Technical-Modifications > * RF7 MK II EvoTec " The Queen is dead, long live the Queen*
    2 Channel Home Audio > * The difference between Moving Coil / Moving Magnet / Moving Iron Cartridges*
    2 Channel Home Audio > * The influence of room acoustics on the listening experience*
    2 Channel Home Audio > * D I Y Audio Cables *
  • My System
    Amp : Marantz PM 11-S 3 ( Modified ) / SACD-DAC: Marantz SA 11-S 3 ( Modified ) / Networkplayer-DAC- Streamer: Marantz NA 8004 ( Modified ) / 2x Cayin Mono Tube Amplifier 929 D Push-Pull with NOS Siemens ECC88, E82EC Philips USA , NOS "EI" Yugoslavia12BH7A , Rectifier NOS Siemens GZ 34 , Power amplifier with NOS 829B RCA USA with 2 Double-Tetrodes / Music Laptop HP ProBook 4540s / TT : Micro Seiki DQX 1000 / Tonearm No.1 Micro Seiki MA 505 MK II & No.2 SME 3009 MK II Improved / Phono Tube Preamplifier : DIY SteinMusic with 2 x PCC 88 JJ Tesla / 2 x PCC 88 Siemens Tubes modified with Jantzen Cross Caps & Jantzen Superior Z Caps / Cartridges : MI´s ADC XLM MK III & QLM 30 MK III, Sonus GoldBlue, Grado Platinium, Soundsmith Othello , Nagaoka 300 OS MP, Osawa 301 / MM`s Audio Technica SL20A , AT V7 , Goldring GS 900 SE / R2R : Tandberg TD 20 A / Tapedeck : TEAC V 6030 S / Philips Audio CD Recorder 6002 / Panasonic BlueRay Player DMP - BD65 / TV Samsung Q7 ( 55 " ) / Headphones : Grado 325e / XLR & Cinch Cables : Wireworld, Kimber, Straight Wire, Mogami, Goldcables & Sommer Cables Germany / Current-Speaker-Cinchcables : DIY Lapp Cables Germany / StudioLine NF Cables / Loudspeaker : Klipsch Ultra Modified " RF7 EvoTec " ( Prototype & Unicat with German ViaBlue Aluminium Bi-Wire Terminals) Modified External DIY Crossover ( Danish Jantzen /German Mundorf / German Thel Audio / German Jahn Silver Mica´s / German WBT Components )

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  1. Based on a discussion in another thread about how to place La Scala in your listening room I´ll copy a short instruction guideline here as well as the owners manual for Hertage Speakers as pdf file. 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. 39687924_la-scala-ii.pdf
  2. in the Heritage Line owners manual ....here is the pfd file as requested 39687924_la-scala-ii.pdf
  3. Right this minute spin with the switzerland harpist Andreas Vollenweider " Behind the Gardens, behind the wall, under the tree " CBS Records, 1981 , Played with the SonusGold Blue, first time that it´s in use . It plays beguiling beautiful
  4. their vinyl albums are so expensive in germany, not available below 50 € = 57 $ list price
  5. Very nice vintage gear as well
  6. Got it now , no doubts at all , they´ll flash you away 😅
  7. That would be fine . Unfortunately, I can´t open the embedded pic to have a further look into your listening space 🤔
  8. 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.
  9. Eric Burdon declares " WAR " 1970, LA Records
  10. she´s reserved for @dirtmudd
  11. 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.
  12. 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
  13. 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.
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