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  1. S

    Seismion - new active isolation platform from Germany

    In fact, our Reactio plus does not feature an indication if the load adjustment is in the optimal range or not. However, there is only the two conditions a) top-plate is free to vibrate and b) top-plate is clamped and not able to move. It can easily be identified by touching the top-plate with...
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    Seismion - new active isolation platform from Germany

    Hello Jazzjunkie, as TLi wrote, the Reactio plus is capable to adapt to uneven weight distribution. While the maximum payload for a centric mass is about 100 kg (actually slightly more than that), this value reduces a little bit if the center of gravity (COG) is out of the middle. Think of it...
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    Seismion - new active isolation platform from Germany

    We are glad to announce that Seismion's new Reactio plus vibration isolator will be featured in the darTZeel America room (1210, 576) at the upcoming AXPONA show (April 12-14)! This will be a great opportunity for the american audio community to get a first-hand experience of the influence of...
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    Seismion - new active isolation platform from Germany

    High end audio usually requires high quality signal and power cables. These cables are so stiff, that they can be a major path of vibration transmission. Active isolation is about active stabilisation, thus it will suppress all incoming vibration into the top plate. This behaviour is somehow...
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    Seismion Reactio Plus

    Hello Markus, Europe is served directly by Seismion (for now). The prices are Reactio (standard): 500x400 mm: 4.800 Euro 600x500 mm: 5.600 Euro Reactio plus 500x400 mm: 6.400 Euro 600x500 mm: 7.345 Euro Prices excluding VAT and excluding packaging (50 Euro for 500x500 mm and 60 Euro for...
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    Seismion - new active isolation platform from Germany

    I can inform you they are already on the way to you :) BTW, @TLi has just received his two Reactio plus and shared his first impressions in a new thread: https://www.whatsbestforum.com/threads/seismion-reactio-plus.37873/ We are happy to answer your questions and to post more detail...
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    Seismion - new active isolation platform from Germany

    Hello Markus, the isolation performance is typically given as the ratio of remaining vibration amplitudes on the isolated part and the vibration amplitudes on the base (the transmissibility of the isolator). Due to the dynamical behaviour of the mechanical structure and the control loop, this is...
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    Thorens New TT

    Totally got your point. I just wanted to add a few technical details about what is included in the 'isolation package', since it might not be obvious from what was published up to now.
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    Seismion - new active isolation platform from Germany

    The active vibration unit integrated into the Thorens New Reference is not our standard Seismion Reactio, but it features several improvements and modifications, such as - higher isolation performance - adjustment to a higher payload range - adaptive leveling with precision of approx. 20 µm -...
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    Thorens New TT

    The active vibration isolation unit from Seismion, which is built into the Thorens New Reference, is not the same as our Seismion Reactio. The general principle is the same, but there are several modifications/improvements: - higher isolation performance - adjusted to a higher payload range -...
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    Seismion - new active isolation platform from Germany

    Hello CKKeung, yes, this is indeed the new product that will be presented to the audience at the Munich High-End Exhibition by Thorens! I think with all respect we can say that Seismion added some core parts to this new Turntable. It features our fully active vibration control know from our...
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    Seismion - new active isolation platform from Germany

    SEISMION AT HIGH-END EXHIBITION IN MUNICH FROM MAY 18-21 Hello guys, we are excited to inform you that Seismion will be co-exhibitor at the upcoming High-End in Munich. We can be found in booth H3, M06. There will be a Seismion Reactio active isolator available to see and experience the...
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    Seismion - new active isolation platform from Germany

    Hello Greenfish, we tested our isolators on various bases, from stiff metal frames to rather shaky tables, and we did not observe any big influence of the surfaces upon isolation performance. Beside that, an industry client tested our active isolator on an airspring table. This airspring can be...
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    Seismion - new active isolation platform from Germany

    Yes, under most conditions all axes should be labelled correctly, I totally agree to that. However, in this case (and just in this case), the graph should only serve as an illustrative comparison between the general behavior of active isolators and airspring isolators. While the properties of...
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    Seismion - new active isolation platform from Germany

    We design and optimize our isolators model-based. In this way we can check all parameter influences before building them up. Afterwards we make real measurements, and we can compare simulations and measurements. Typically, they show very good agreements. All other graphs (transmissibility...
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    Seismion - new active isolation platform from Germany

    This is just an exemplary simulation of the free vibrations after impuls excitation. The vibration amplitudes on the y-axis are normalized, so they don't have any numbers. The intention of this graph is to compare the vibration amplitudes of a passive airspring and our active "Reactio". You can...
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    Seismion - new active isolation platform from Germany

    Don‘t worry the Pure Mode will turn it fully off (actually disconnect from power supply). I‘m planing to cover display and interface buttons behind a darkly tinted acrylic glas panel, you won‘t even notice that could be a display.. I‘ll upload some renderings in the next weeks. Sebastian
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    Seismion - new active isolation platform from Germany

    O.k. interface and connectors will be generally placed on the longer sides.. So: 1st version Reactio Ultra 500mm wide and 400mm deep - payload 80-90kg max. payload. Target isolation >=60dB. Does 600mm x 500mm and 160kg payload fit the very most audiophile turntables? Maybe a bit larger is...
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    Seismion - new active isolation platform from Germany

    O.k. At which side should the display and buttons be places, the longer or shorter? Sebastian
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    Seismion - new active isolation platform from Germany

    O.K. back to our original topic - active isolation and the new audiophile Reactio Pro and probably the Reactio Ultra. So I need some input from all of you about the size and payload, because I would like to design only one size in the beginning. My first guess is 600mm wide and 500mm deep and...
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    Seismion - new active isolation platform from Germany

    Here it is, it is actually a patent https://patents.google.com/patent/JP7104389B1/en?oq=7104389 Sebastian
  22. S

    Seismion - new active isolation platform from Germany

    I believe that‘s the aim of this thread ;) I took a look at the construction of the babel. What I see are many mechanical connections and screws. A point to consider in mechanics, when it comes to sub-micron scale, is the noise generated by friction in each mechanical connection. Espesially...
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    Seismion - new active isolation platform from Germany

    Probably the graph we showed above with the spectrum given in RMS velocity is a bit difficult to read/understand for some users. In metrology, the spectra are typically given in RMS velocity of third-octave bands, and the abbreviation 'VC' refers to 'Vibration criteria'. You find several...
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    Seismion - new active isolation platform from Germany

    The Reactio A-Pro will be something based on our industry Reactio Pro version, which means auto leveling, better than 40dB reduction and diagnosis of inner vibration control. Special about it is the sub 1 Hz isolation, which you won‘t find in other commercial products. The price tag of these Pro...
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    Seismion - new active isolation platform from Germany

    Ok, I see.. So I‘m going to make a special Audio-Pro version. The current Reactio is fully analog, there is only linear circuitry inside. The LED is driven by analog comparators. Do you suggest the Audio-Pro also to be fully analog without any microcontrollers, displays and so on? This would...
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    Seismion - new active isolation platform from Germany

    Due to some valid criticism of the Reactio not showing the saturation of the sensors, I am thinking to add an indicator of saturation into the already mounted LED. How about letting the LED flash in different sequences in order to indicate saturated/overdriven sensors. This would require an...
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    Seismion - new active isolation platform from Germany

    Our Isolators aren't specifically designed for microscopes. They are made to enable the most challenging requirements for vibration reduction, and I believe they do their job very well. Please compare the attached measurement of the standard Reactio, taken in our basement, with the worlds best...
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    Seismion - new active isolation platform from Germany

    Hello ICUToo, generally, we ship our isolators worldwide. Currently we offer our Reactio isolators in sizes 500x400 mm and 600x500 mm. Our prices are 4.800 Euro and 5.600 Euro for these models (plus VAT and shipping). They are 100% made in germany. Currently there are still a few 500x400 ones in...
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    Seismion - new active isolation platform from Germany

    This is Sebastian from Seismion, I am going to add some aspects on active isolation of turn tables, since these devices benefit most from active isolation. First of all the unwanted self-noise or rumble will be reduced by an active isolator, since the active isolator is like a damper for...
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    Seismion - new active isolation platform from Germany

    Hello guys, we from Seismion (my co-founder Sebastian, and me) are checking this forum on a not-regular basis, and we have seen some speculations and questions recently arising, which I would like to comment on. You might call us a bit biased towards active isolation ;) but we try to be as...

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