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Posts posted by MicroMara

  1. Yes, that's really tragic with the American vinyl factory, an infinite number of master tapes have probably been lost forever. But it just happened and we can't undo it. That's why we should honor our vinyl treasures all the more.


    Best Regards MicroMara

    • Like 2
  2. This is a fantastic thread. I love records and have collected over 1,200 pieces myself over 40 years. But I can't read all 442 pages. I only browsed the last 40 pages and YES I don't know that much American music.I have to work through here in peace. Here are a few records from my collection. I hope they have not been mentioned on the previous pages and if it is not so bad ... I hope.



    Ry Cooder kleiner.jpg







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    • Thanks 2
  3. 11 hours ago, glens said:

    Do those connectors have an internal wedge that expands them once they're inserted?

    Yes, the screw head has a mandrel that spreads apart when screwed into the pole terminal. This guarantees maximum contact area and contact stability.

    These connectors are a low-mass principle with OFC copper signal conductors. To protect against oxidation, it is directly gold-plated without nickel. This maintains its high conductivity and is free from magnetic interference. The contact pin is shaped in such a way that its three segments 'bulge' by screwing in the spindle and it can be firmly clamped in each pole terminal. The resulting constant high contact pressure guarantees consistently low contact resistance.


    Thanking you very much for your kind attention Mr. Glens......


    Best regards MicroMara

    WBT 0610kleiner.jpg


  4. Hi Guys...... I had to schedule my project. Before I could finish the external crossover, I had to have all the cable sets, i.e. 8 x 12 mm2, each 52 inches long. My speaker cables are all DIY. It makes no sense to finish the external crossover first and then start with the cable layer. This naturally delays the work on the external crossover by 1 week. I only work on them if I have enough concentration in the evening, I'm in a bad mood, then I prefer not to do anything. Quality and perfection are my top priority. In Germany we say .... Good things take time. Here you can see how I make my speaker cables.  See you soon   😎


    Best regards   MicroMara



    LQV 12 mm2 Georg8kleiner.jpg

    LQV 12 mm2 Georg6kleiner.jpg

    LQV 12 mm2 Georg7kleiner.jpg

    LQV 12 mm2 Georgkleiner.jpg

    LQV 12 mm2 Georg4kleiner.jpg

    LQV 12 mm2 Georg5kleiner.jpg

    LQV 12 mm2 Georg2kleiner.jpg

    LQV 12 mm2 Georg3kleiner.jpg

    • Like 2
  5. 9 hours ago, JohnJ said:

    If your work sounds as good as it looks......




    Thank you very much ......

    unfortunately the MK II cannot play without a crossover, it will take about 1 week. Then I will know if I will be rewarded by my queen for this innovation, the time and financial expense of mine. I think I am currently building the most beautiful and best sounding RF 7 MK II in the world. A prototype and unicat. If there is someone else, e.g. there is a similar project in America that I would like to get to know. I don't know anyone yet, neither in Germany nor in Europe. 😇


    Best regards MicroMara

    • Like 1
  6. Hi Guys, I have hardly slept more than 4 hours in the past few days. Work, family and the moddy, phase 6, are a bit difficult for me. I just wanted to give you a quick update ........ I read through this whole thread here and find that I have survived the "Contact Enhancer" Shitstorm. And I notice that I am often compared to a "Jeff Medwin". So I'm probably not being taken seriously here ... Still, I don't give up and keep going.


    The new terminals on the MK II are almost finished. All that is missing are the brass screw connection on the terminals and on the wood. To get the old terminal cutout of the MK II tight I will seal it with acrylic glue from the inside.In the other picture you see the monochrystalliene 2 x 2 mm 2 internal wiring, which I installed 3 years ago in the MK II.


    Bye for now!



    Alpha Kupferkleiner.jpg


    Terminal 1kleiner.jpg

    • Like 1
  7. So gentlemen, I will find little time to post in the next 14 days, my RF 7 MK II has been out of service since yesterday and is being prepared for phase 6 of my moddy. Then I start soldering the external crossover. Once I have completed this, I have to assemble 8 single wire 12 mm2 cable sets and equip them with WBT 0610 OFC copper angled banana plugs, that is 32 pieces. The external crossovers also each have 8 WBT 0708 pole terminals. The entire concept is based on a bi wire solution. Spent over $ 1,000 on plugs today. I got Yamaha 2 way speakers from the children's room into the music room to be able to listen to some relaxed music while working, well, in contrast to my phase 1 to 5 modified RF 7 MK II sound cruel. But will I survive ... somehow ...I hope it doesn't end with me .....


    Best regards MicroMara

    der verarmte audiophile.gif


    der verarmte audiophile 2.jpg

    • Haha 2
  8. Yes ..... very, very sad to have already read that in Germany in the sports news. Since Dirk Novitzki became a basketball star in the USA, this sport has also become very popular in Germany.

  9. 1 hour ago, Randyh said:

    why do you promote the RF 7 MKII , is there anything special that makes that speaker so desirable

    It is certainly also due to my electronic chain that my MK II plays so extraordinarily wonderful, because it is played with a Marantz PM 11-S3 amplifier and a Marantz SA 11-S3 SACDP / DAC. This is a wonderful combination of timbres with the diction of a tube amplifier and the power of a bull.

  10. 9 minutes ago, Randyh said:

    The P 39 F was selling for 20k$ in the USA , and some new pairs at end of production sold for 10k$ -I think you would be impressed


    13 minutes ago, Randyh said:

    The P 39 F was selling for 20k$ in the USA , and some new pairs at end of production sold for 10k$ -I think you would be impressed

    I know the F 37 and had heard it once, my wife thought it was terrible .... the WAF, you know what I mean...😎

  11. 48 minutes ago, glens said:


    I see the use of (low-value) bypass caps being espoused all over the place, with description of how they alter the sound, yet my logical thought process leads me to believe the described results can only be imagined.  The low values only allow current to flow in any meaningful way at frequencies much too high to possibly create the effects usually described.


    Who can justify the discrepancy?

    he German Silver Mica that I use have an excellent reputation in Europe. To determine whether and how a positive sound influence takes place or not, I will set up the external crossover with the Silver Mica from the beginning. After a few weeks I will solder them out again to determine whether they really have a decisive influence on the sound harmony of the RF 7 MK II in the high-mid range. The project will not be finished with the completion of the external crossover.Of course, I could also mount the crossover without a mica and solder it in after a few weeks, but these mica capacitors take about 300 hours burn-in. At least that's what they told me.


    Regards MicroMara

  12. 38 minutes ago, Randyh said:

    why do you promote the RF 7 MKII , is there anything special that makes that speaker so desirable


    Well, I've owned many, and certainly much more expensive speakers. So far, no loudspeaker in this price range has managed to impress me even after 4 years. Friends of mine own e.g. Jm Lab, Tannoy, Dali, B & W, Dynaudio and so on, when you listen to music with me you are simply speechless like a loudspeaker from this price range can play so enormously well. However, this requires good room acoustics and a huge volume of space. The example mentioned with "AMG" or "BRABUS" tuning was only used to illustrate my procedure on the RF 7 MK II. Of course, an AK6 Khorn is cool, but costs a good $ 22.000 in Germany the pair.


    Regards MicroMara

    • Like 1
  13. 2 hours ago, MechEngVic said:

    Ha! I was just joking with deang, making a reference to the tv show "The Mandalorian", where a group of characters has to keep their identities a secret from the world and their creed is "This is the way". 


    What deang was explaining was matching the original DCR of your coils, which you seem to already know, and also maintaining their mutual inductance values. In other words, since the original coils are so close together, they are going affect each other, and their measured values will differ from their rated values. The measured values are what matter, so if you are using the same rated values in your new crossovers, you will have to place the coils close enough together to be within at least 10% of the measured mutual inductive values of the original coils.


    Thanks for sharing the diagram. 


    Didn't know that the DRC in American English is exactly the same as in Germany.


    Yes, the DRC values of the wax coils and the resistors do not match the original Klipsch values. They don't have Silver Mica Bypass Caps in there either. There are also other modification options regarding the horn if it should play too dominantly due to the wax coils. So far, I think, thought of everything and then, hopefully, be prepared for everything. I will also measure everything and publish the diagrams here, but that will take a few more weeks. In principle, my crossover is a fundamentally different concept.


    Regards MicroMara

    • Like 2
  14. 17 hours ago, MechEngVic said:

    MicroMara, When you can, can you make a diagram with values of the rf7 ii crossover? I have yet to find one.


    Two days ago you wrote to DranG to keep the secrets, now you ask me?  I'll tell you something: Yes, I will send it to you in a few hours via the Message Portal.


    Nevertheless, you make a mistake in thinking. You can't bridle a horse from behind. Crossover tuning is the last measure to be carried out on the RF 7 MK II. She has to be prepared for the crucial moddy. My modification phase 1 to 5 is a chain of changes where one link engages in the next, and with the crossover basis it can give you so much more pleasure than ever before. I've had the same experience over the past few weeks, but if I just tuned the crossover, it wouldn't be the same.


    I would like to explain this to you using the following example: You buy a wonderful Mercedes, everything is perfect. Then there are tuning companies like "AMG" or "BRABUS". They don't just install an engine with more horsepower. No, the electronics, the shock absorbers, the chassis, the brake lines, the aerodynamics, the design,everything is readjusted, only then is the more powerful engine installed. Only then is everything perfectly coordinated and the vehicle is at a higher level and can perform its best performance.


    Regards MicroMara


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