All pumps vibrates. They shake with different amplitudes depending on design. TechDAS has multiple layers of soft absorber in the chassis to reduce the vibration transmitting outside. If your pumps shake too much for Reactio to handle, you should put Symposium Ultra on top of Reactio to take some of the shaking away to within the limit of Reactio. I think it will work.
Seismion - new active isolation platform from Germany
- Thread starter TLi
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Fixing all cables to the top-plate is an excellent way to get the best performance from active isolation. Another neat way is to use some juggling balls filled with millet, sand etc. They are small, cheap and effective. For thick cables one has to fill some bags with granular material.
Sebastian
I agree, put the Symposium Ultra on top of the Reactio, it should be about 10kg and will reduce the maximum vibration amplitude of the pump due to its mass. It is like this:
Force = Mass * Acceleration --> Acceleration = Force / Mass
thus the acceleration of the top-plate will decrease if you increase the mass. The force (reaction force) generated by the pump is not affected by all this.
Sebastian
I heard system that sounded grainy and harsh with too many active isolation. The problem is not caused by active isolation, or I can put it like this, resonance harmonics of the system covers the inherit harshness. When resonance harmonics is removed by active isolation, the sound seems dry. When the cause of graininess is corrected, the sound will be much better.Wouldn’t that make it sound grainy?
another alternative is 'unweighting' any heavy cables. especially heavy phono, power, speaker, or interconnect cables. those cables hanging off the side of active devices 'dampen' and 'reduce' the performance as they pull down the top plate (reducing the 'action'). agree that cables that are light and loose add to resonance too so the taping can be effective. those are two separate issues to solve.
this definitely improved audible performance for me with the Tana/Herzan devices. assume the Seismion would react similarly.
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The
at the end was suppose convey the joke of having millet or other grain as a dampening material… and would that make it sound grainy.The joke analogy here would be to use a humidifier in the room, so that the active isolation doesn’t make it sound too dry.
Seriously though, If it does actually sound dry, then in my mind that is probably better. It is harder to get a system quiet, than to get it thick sounding.
More details about the company and the latest developments at Seismion
Seismion was founded in 2021 with the goal to develop high-performance active vibration isolators both for industry as well as for audiophiles. An active vibration isolator is a complex, multiphysics device. It consists of highly sensitive piezoelectric sensors, which detect even the smallest vibrations, an all-analog electronic control circuit and voice-coil actuators that generate the required compensation forces to stabilize the isolator against ambient disturbances.
For optimal performance, all these subcomponents need to be tuned accordingly. Seismion has developed all crucial components in house.
The Atlas-series was launched for heavy payload systems in the field of semiconductor production, and the Reactio-series for metrology applications and high-end audio systems.
Recently, the Reactio 2 has been introduced as the latest and highest performing model. Beside the pure isolation it also features an automatic leveling and a locking function. It has been totally redesigned to fit in all high-end systems. The production and assembly takes place in our company site in Hannover, Germany.
Our active vibration isolators offer extremely demanding sub-Hertz isolation, and realizes a vibration reduction of 40 dB in the audible frequency range. Due to selected choice of Operational Amplifiers and other components, the noise floor is extremely low, which yields a perfectly clean and silent background.
The result is a pure and natural sound reproduction rarely experienced before.
Active vibration isolation is beneficial for nearly all kinds of equipment, both analog and digital, like turntables, pre- and power-amps, streamers and even cables.
The Reactio 2 has first been introduced at the High-End exhibition in Munich, and later on at the Singapore Hi-End Asia International Audio Visual Show.
Seismion was founded in 2021 with the goal to develop high-performance active vibration isolators both for industry as well as for audiophiles. An active vibration isolator is a complex, multiphysics device. It consists of highly sensitive piezoelectric sensors, which detect even the smallest vibrations, an all-analog electronic control circuit and voice-coil actuators that generate the required compensation forces to stabilize the isolator against ambient disturbances.
For optimal performance, all these subcomponents need to be tuned accordingly. Seismion has developed all crucial components in house.
The Atlas-series was launched for heavy payload systems in the field of semiconductor production, and the Reactio-series for metrology applications and high-end audio systems.
Recently, the Reactio 2 has been introduced as the latest and highest performing model. Beside the pure isolation it also features an automatic leveling and a locking function. It has been totally redesigned to fit in all high-end systems. The production and assembly takes place in our company site in Hannover, Germany.
Our active vibration isolators offer extremely demanding sub-Hertz isolation, and realizes a vibration reduction of 40 dB in the audible frequency range. Due to selected choice of Operational Amplifiers and other components, the noise floor is extremely low, which yields a perfectly clean and silent background.
The result is a pure and natural sound reproduction rarely experienced before.
Active vibration isolation is beneficial for nearly all kinds of equipment, both analog and digital, like turntables, pre- and power-amps, streamers and even cables.
The Reactio 2 has first been introduced at the High-End exhibition in Munich, and later on at the Singapore Hi-End Asia International Audio Visual Show.
Yeah, I wonder how a self-leveling function would work with a turntable on top of it. Not sure I'd want it doing its thing after any power interruption, or what have you. I've got the Reactio Plus under my TT; not sure I'd move to the Reactio 2 in that position.
no. one must first place the tt on top of the Reactio 2, activate it, then perform the final level process on the platter top.
@jbrrp1
with the Taiko Tana (Herzan TS based) you level the tt platter top after the active device does it's own leveling thing. the active device top plate might be level, but you have a plinth that might not be level. so until the tt is on the active device and it's activated you can't level the platter exactly. hopefully the tt desgn offers a process to do that. or that you get lucky and it's fine. you can always shim the plinth feet if necessary. best to not assume anything.
just the normal tuning process at this level.
of course; it's possible that 'leveling' = weight balancing in marketing-speak (yes, i see that the support docs claim is different). but no way to know exactly what is going on until you measure the platter top state of level.
I get that. My concern is that it might find a new "level" after a power interruption, and then you have to re-level your TT, because no automated process is actually perfect. This could happen without my knowing it, and then I just have to be diligent on checking TT level. Might play havoc with one's OCD side...
I’m guessing I just missed a few things. Do these come in different sizes? Are there different models for different things, like turntables vs floor standing speakers? What is the pricing? Are these UL listed?
Thanks in advance.
Thanks in advance.
So many questions! Post #138 by @JEB42 in this thread has some of the answers, but if you’re really curious (Ouch!), taking the time to read through the whole thread would certainly be worth your time, IMO.
Correct. Level your stand as best possible. The Reactio 2 will level the top relative to the base it is place on. With a turntable, fine levelling is done with the table.
Currently the Reactio 2 is only in the 500x400 size. There will be a 600x500 size. Both have a load limit respecting the centroid of 65 kg. The units are CE certified. The outboard power supplies provided are UL us and c approved. The unit itself is 12v internally.
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