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MicroMara

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Everything posted by MicroMara

  1. Ultimately, I opted for a voltage divider in front of the horn. (change on the crossover) There is a 3.9 ohm resistor in series in front of the driver anyway. I took several measurements. The goal was to make the MHT driver linearly quieter. With a 10 ohm resistor in parallel in front of the horn, the level became 4db quieter. That was the upper limit and the brilliance was lost. So I groped my way. 22 ohms was still too bright. With 15 ohms it was perfect.I can drive levels up to 106 dB in my music room, because the 2 KHz dominance of the horn was annoying. Of course, the quality and sound properties of the caps, resistors, coils, etc. used also play a very important role in a crossover modification. Iám happy than never before now
  2. cheers to everybody here, I have some days vacations and it´s 10.45 pm in germany, listening to 10 CC first Album from 1975 . Their first hit single " I am not in love " is recorded on the album " the original soundtrack " as well. On the Phonogram Germany Label. Amazing acustical quality at these times.
  3. You may remember, when I send the RF7 Diagram to you, a couple of weeks ago...the red line with the voltage divider
  4. You have to know that I had the coil inductance measured by an electrical engineer. He said it all fits. In addition, my crossover does not match the mirrored image with the parameters of the original crossover. It is modified. The dynamics of the horn were dampened linearly by 2.5 dB. The presence spectrum, especially at high volume, was too dominant and obscured the basic acustic tones and voices, especially in the depth of the stage representation. I have only been using the external crossover for 10 days and am only listening to the new acoustic performance. The first measurement diagram shown above shows the frequency response and the freedom from distortion of the entire sound spectrum. Of course, I do not rule out any later changes, but at the moment I am just amazed at how the RF7 MK II plays. Best regards MicroMara
  5. My TT is made by the legendary japanese Factory " Micro Seiki " and is about 38 years old. I own it since 1982. Every two years I do services on it, like change of the oils for the disc drive ,oil for the tonearm lift, or tonearm adjustments. Depends on the cardridges that I use. Using Moving Iron only, like Grado´s , Soundsmith, Nagaoka´s or Osawa .
  6. At this point I wanted to say thank you again. Your graphic helped me a lot to implement the arrangement of the coils. Without this graphic, I would have chosen a different arrangement, but this could have led to induction problems. Thanks alot CECAA850 💪 👍
  7. Steve Miller Band, Timelessly captivating with "Fly like an Eagle" and Circle of Love with the track "Macho City" on the B side 16:38 minutes of musical and tonal delight
  8. I now follow your tradition in this thread with the illumination of the record on the turntable and integration with cover. It's nicer than just showing the cover of the record you just heard. I now have a few days to finally be able to listen to music in peace. I still have vacation entitlement from 2019. In Germany you have to take your remaining vacation until the end of March of the following year, which is legally required.Tangerine Dream ... my favorite album is "FORCE MAJEURE". I even have the Clear Cut version
  9. MicroMara

    The Other Discs

    second time wrong thread ....
  10. MicroMara

    The Other Discs

    sorry, wrong thread......
  11. starting up a new project .....want to construct new cabinets for my RF7 MK II .....somebody might help me ?
  12. MicroMara

    The Other Discs

    It's a shame we can't drink your wiskey together and Gergory Porter can't hear them together........cheers ....🥃
  13. MicroMara

    The Other Discs

    Enjoy one of the best jazz singers of our time. I have his entire collection at home and I adore him very much
  14. I am only a small amateur against the engineers at Klipsch, but in the past few days I have tried with a "mini dsp Umik 1, an Omni-Directional USB Measurement Calibrated Microphone measurements at a distance of 39,3701 inch ( = 1 meter ) . The microphone was at a height between Horn and the first bass woofer. For comparison I have 3 diagrams here. The first diagram is from the original RF7 MK II. This measurement diagram was published by the German Hi-Fi Magazine "Audio". First axial, the 10 degrees high, 30 degrees, 60 degrees and 90 degrees. The second diagram shows the measurement of my modified Queen RF7 MKII, axial only. The third diagram shows the measurement diagram of an RF7 MK III. It was published by the English HiFI magazine Henley Audio UK. Of course, I don't have the opportunity to carry out really professional measurements at home, because I lack the equipment and soundproof rooms. Nevertheless, I believe that my measurements at least give indications. THD = 0,290 % ! When I bought the RF7 MK II 4 years ago I was in love with her, after the Moddy phases 1 - 5 I loved her ... now I adore her . Best regards MicroMara Now it´s your turn .........
  15. MicroMara

    The Other Discs

    This evening I had some live sessions with Joe Bonamassa " Radio City " NY and Beth Hart " Live at the Royal Albert Hall " in London UK. ..........it was a nice evening.......
  16. MicroMara

    The Other Discs

    Good Morning in german language " Guten morgen " , Good Day in german " Guten Tag " and Good Night " Gute Nacht " 😎
  17. MicroMara

    The Other Discs

    cheers my friend, enjoy your wiskey . On my RF7 MK II with the new crossovers, Greta van Fleet sound supple soft in the heights, the mid-tone as with the melt of golden honey colors, the basses rich and dry with the energy of a volcano. The voice of the frontman like that of Jimmy Page. The boys are incredibly good.You also need the 2018 album. Buy for now, still 01.a.m here.
  18. MicroMara

    The Other Discs

    I'm listening to the American rock group "Greta van Fleet". The albums " from the fires " and anthem of the peaceful army ". I also have everything from "Led Zeppelin" as records. Greta van Fleet are really the reincarnation of Led Zeppelin ". I am thrilled. Best regards MicroMara
  19. I have to thank you for your patience. After a good 4 weeks of membership in your community, I feel part of it and thus a small winder in this huge clockwork. See you soon Best regards MicroMara
  20. MicroMara

    The Other Discs

    Just heard these two groups Kenny Burell's "Midnight Blue" recorded in 1967 with the musicians Stanley Turrentine, Major Holly Jr. Bill English, and Ray Barretto. Then came the album "CONCERTIO" by Jim Hall from 1975. With the musicians Chat Baker, Paul Desmond, Roland Hanna, Ron Carter and Steve Gadd. Great Stuff ..... Regards MicroMara
  21. MicroMara

    The Other Discs

    Yes, this is really a unique effect in blues music with a high recognition value
  22. Yes, I know "the golden middle" is mostly the right way. Me ? too extreme? I think spontaneously of Youthman, who has produced a new video on youtube with only "50 pairs" of Klipsch boxes that he owns. I only have 2 speakers ! At least something that Youthman doesn´t have. Good Idea...the hollow alu tubes
  23. No problem. I am used to being viewed very critically for my passion and obsession. What I do divides into two camps. Approval or rejection.
  24. If you read my first posting, you will find that I always liked the original Rf 7 MK II, otherwise I had not bought it. When the MK III came onto the German market, I wanted to buy it first. But she didn't blow me away. That's why I preferred to start this project and build my own MK II. I only did that for myself. It was worth every penny. And yes, I value perfection when others overkill, okay, so I can live with that. Best regards MicroMara
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