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Posts posted by MicroMara

  1. 55 minutes ago, CECAA850 said:

    If I'm reading this correctly you're referring to the material that's damping the inside of the speakers.  I was wondering what you did to the ROOM acoustics you referred to in step 2.  That can have a very profound difference in what you ultimately hear.  Much more so that the material that you put in the cabinet.

    It's probably a matter of mutual understanding, my English probably doesn't always hit the nail on the head. The room acoustics were never changed, when I had the house remodeled, the drywall builders did a clean job for room acoustics, I have reverberation times of only 0.2 seconds, which corresponds to studio quality. Nei you understood correctly, by dramatic I meant the result of the new insulation material, the housing is now dust-dry, there is no airborne sound or structure-borne noise in the MK II housing. The basses are drier, faster, more precise in the illustration.


    The middle of the bass snaps into your face, the entire bass area plays more relaxed, harder, more merciless, the kickbass is extremely clean, the subbass rolls resonance-free through the music room, and the horn body is additionally damped do his job in peace. Never before has modification level 2 played so precisely across the entire frequency range. I couldn't believe it myself


    I forgot two other important aspects of phase 2 moddy. On the one hand, the air mass flow is now directly on the two reflex ports, there is no more air turbulence. On the other hand, the rear wall is now massively better damped, even on the left and right next to the bass reflex ports I have integrated snnake stripes and the crossover installed on the rear is massively decoupled. It is no longer subject to vibrations, so it can now process the impulses very cleanly.


    The picture shows the irritation of a coil by structure-borne noise



    Best regards Micromara



  2. 9 hours ago, billybob said:

    Forgot for a minute you are not in Great Britain. Just a title of a OO7

    Film...book, for your eyes only.

    Nothing derogatory intended, I can assure you. A bit frivolous at times, maybe. Nothing to apologise for. On the contrary, still rather enjoying the progress of your presentation here. Thanks for asking.

    That was Sheena Easton, wonderful theme song. Now I understand, thank you very much. My pleasure 😃

    • Like 1
  3. Once again a really very last statement regarding "Contact Enhancement"......


    Conditioning the contact surfaces with "CT" minimizes the contact resistance on all types of connectors (XLR / RCA / loudspeaker / digital etc.). The result - your hi-fi / high-end system plays to the point - precise, open, with a stage. "CT" achieves a significantly higher performance. And this with every system. Mostly, hi-fi and high-end combinations transmit signals less than 0.000001 volts. So incredibly small signals. A good MC phonotone cell e.g. produces maximum 0.4 mV. Assuming a dynamic range of 60dB, the smallest signal is less than 1 trillionth of a volt. Even with normal XLR or RCA connections, the smallest signal components are in the pico-volt range, i.e. at 10-12 or 0,000,000,000,001 volts.


    The decisive factor in the transmission of LF signals is that it is the last percent that really interests us. Because this last percent contains the sonically interesting details such as spatiality, fine coloring, fine dynamics. If these details are not transmitted, we will hear music. What touches, goosebumps, airiness, sense of space, grip is not felt.


    Best regards MicroMara

    • Like 1
  4. One last piece of information about the Contact Enhancer


    Before: Is between the two contact surfaces Dirt and oxide layer embedded, there is only a few direct contact points......

    After : The contact agent has removed the dirt and the missing parts with atoms refilled. Over the whole contact area is now a positive connection is established. The improvement in contact quality is considerable.



    • Like 1
  5. 16 hours ago, glens said:

    That's what I thought you'd said.  The coils could be painted or have anything non-magnetic smeared all over them and function the same.  You are aware of this?

    The coils were matt after 4 years, at least on the surface. However, current only flows on the surfaces of a coil. You would have to measure how and whether the current flow from an untreated to a treated coil changes. However, my focus is now to deal intensively with the new external crossover for the Rf7 MK II. The new, wider and deeper housings are already in the works, I think they will be completed in a good 14 days.

    • Like 1
  6. 35 minutes ago, glens said:

    While the cables look really nice, and I'm sure they also conduct electricity at least as well as needed, I'm still stuck on the use of the contact product on the drivers and crossover.  How so and why?  And what was the result, specifically?

    The "Contact Enhancer" linked by me is used as follows. As a stopper on the bottle there is a small swab in the liquid line at the end of the stopper. All Cichkabel / XLR cables are wetted on the plugs and sockets, both inside and outside. The same is done with his electronics ... on all Chinch / XLR / Digital / KoAx / Terminla pole terminals on the speaker, the contacts of the speaker cables, i.e. bananas, spades, angled banana plugs, etc. Also the cold device sockets to network players, CDP / AMP / Phono / so everywhere. Then reassemble the system  😂


    I do not give a sound rating, nor a guarantee that everyone will hear / perceive in his chain ... so I would like to know if someone of you tried it out, what happens there or not .....

  7. I thank you very much for your appreciation for the cables. I get the raw material from one of the leading manufacturers of industrial cables. The specialty of the loudspeaker cables and jumpers is that they all have a copper cable cross section of 12mm2 per phase, including the jumpers. Therefore my MK II is fired with a total of 4 x 12mm2 = 48 mm2. These speaker cables have no inherent sound but only transpose "energy" due to their cross-sections





    • Like 1
  8. 4 hours ago, CECAA850 said:

    Phase 2 was room acoustics.  What was done there?

    In phase 2 of the project, the original insulation material was exchanged for one of the insulation materials currently available, which binds air and structure-borne noise. As a result, the crossover built into the rear of the housing is less of a structure-borne noise than the mid-low woofer. The chassis have more interior volume, the damping factor of the new material has made the inner housing "dust". I would almost like to describe the positive acoustic effects as "dramatic".



    Dämmung 1.jpg

    Dämmung 3.jpg

    Dämmung Innen 1.jpg

    Dämmung Innen 3.jpg

  9. Dear Sir, it is a pity that the discussion here is still about the fluid. The modification of the RF 7 MK II consisted of 5 stages, the use of the fluid was, so to speak, only the point on the i. You only need to read the opening post again which expansion level had which weighting. Here is a link to a German HiFi online shop where you can buy it. It happens to be a good friend of mine.   


    Hope this link is working ......


      http://www.hifizubehoer24.de/epages/61644966.sf/de_DE/?ObjectPath=/Shops/61644966/Products/"Contact Enhancer 2ml"




    But don't order them all at once, if you want to try it out for yourself, I don't know the stocks .....


    Keep in touch .........

    • Like 2
  10. 8 hours ago, CECAA850 said:

    I was under the impression that it's made to be applied to contacts that open and close like a relay.  That's why I'm confused.  Well......one of the reasons I'm confused.

    Hello CECAA850 🙂 what confuses exactly, I try to answer all ambiguities ... but I'm not a physicist. Everything I modify with the RF 7 MK II is based on my personal experience, well over 40 years in private use. I am not (yet) doing this professionally, but would be an option ...

    • Like 1
  11. 7 hours ago, Randyh said:

    he cleaned all the boards  , the copper coils and the contacts of all the resistors and the capacitors  with the NASA Contact Enhancer.   that stuff is somewhat similar to DEOXIT ,  if I am not wrong here -

    Hello Randyh 🙂 It is not a deoxite ... I do not know the chemical composition of the fluid, but my wife is a qualified chemist by profession and comes from physical chemistry, so the use of chemical fluids to optimize the flow of electrons in copper structures is not a voodoo for her. These fluids are used in many technical areas today ... Thanks and regards

    • Like 1
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