This answer seems to be off-topic. There won't be any speaker sitting on a metal plate, so what is the point mentioning this...
Seismion - new active isolation platform from Germany
- Thread starter TLi
- Start date
When @TLi suggested using a metal stand in his post below:
Your response was:
So, I learned from you that you're going to use a metal stand. Metal or not it's not important. Placing speakers over a stand is my point. My prior answer is in the center of topic because it directly affects evaluating the effectiveness of seismion. @Kingrex shared his concerns regarding speaker manufacturers' responses about using one speaker and my response was related with that suggesting that there shouldn't be any concern about using one speaker. Maybe all have been misunderstood.
Last edited:
This is Sebastian, I want to add that the main idea of doing this new approach was by Gregor a friend of Aldo (Sigma Acoustics) and Marcus and me. He is taking care of the acoustics in Aldo's listening room. He is well aware of the disadvantages of putting the speakers higher, however, everything is a trade off and one has to decide what gives the best overall result.
His point is that in the exhibition listening rooms it is not possible to play music at higher volumes because of the strong vibrations of the walls and floors and interference respectively. Also it is not possible to reduce low frequency vibration with carpets and light weight wood constructions, only heavy walls and floors would help to reduce their acceleration and sound emission respectively. This is mainly due to structure-borne sound transmission. The idea is to cut this transmission path between the speakers and the floor.
However, it is not possible to do this with a passive isolations system, because the speakers would excite the resonance of the isolator and one would get a forward and backward moving speaker. This would lead to modulations and doppler-effects in the sound basically at 4Hz, which is most critical and audible by the human ear, all not acceptable. Thus we have to use the Seismion Atlas system, which has very high damping and isolation performance and virtually no movement, this you will see at the high-End show - the difference between On and Off.
What we hope to achieve in the listening room at High-End is a perfect bass and midrange reproduction. I also think that the amount of bass won't be affected much by putting the speakers 15cm higher (the speakers have a hight of 185cm), because the bass loudness is significantly affected by the listening volume, I think much much more than by the distance to the floor.
His point is that in the exhibition listening rooms it is not possible to play music at higher volumes because of the strong vibrations of the walls and floors and interference respectively. Also it is not possible to reduce low frequency vibration with carpets and light weight wood constructions, only heavy walls and floors would help to reduce their acceleration and sound emission respectively. This is mainly due to structure-borne sound transmission. The idea is to cut this transmission path between the speakers and the floor.
However, it is not possible to do this with a passive isolations system, because the speakers would excite the resonance of the isolator and one would get a forward and backward moving speaker. This would lead to modulations and doppler-effects in the sound basically at 4Hz, which is most critical and audible by the human ear, all not acceptable. Thus we have to use the Seismion Atlas system, which has very high damping and isolation performance and virtually no movement, this you will see at the high-End show - the difference between On and Off.
What we hope to achieve in the listening room at High-End is a perfect bass and midrange reproduction. I also think that the amount of bass won't be affected much by putting the speakers 15cm higher (the speakers have a hight of 185cm), because the bass loudness is significantly affected by the listening volume, I think much much more than by the distance to the floor.
Last edited:
Seismion at the High-End in Munich
We are excited to announce that Seismion has its latest models of active vibration isolators on display at the following rooms:
- Atrium 4.2, F 213: as co-exhibitor with darTZeel
- Hall H 2, H 07 / J 11 as co-exhibitor with Extreme Audio
Beside that, also the New Reference turntable, a result of the cooperation between Thorens and Seismion, will be shown at the Thorens booth
H 3, M06/N05/M06N05
Our isolators are used under various equipment like turntables, DAC's, amplifier and even loudspeakers. We also present some premiers of new products, so please come over to experience what a difference high-quality vibration isolation can make.
We are looking forward to meet you there in person!
We are excited to announce that Seismion has its latest models of active vibration isolators on display at the following rooms:
- Atrium 4.2, F 213: as co-exhibitor with darTZeel
- Hall H 2, H 07 / J 11 as co-exhibitor with Extreme Audio
Beside that, also the New Reference turntable, a result of the cooperation between Thorens and Seismion, will be shown at the Thorens booth
H 3, M06/N05/M06N05
Our isolators are used under various equipment like turntables, DAC's, amplifier and even loudspeakers. We also present some premiers of new products, so please come over to experience what a difference high-quality vibration isolation can make.
We are looking forward to meet you there in person!
Summary of Munich High-End, part 1
Sebastian and I are just back from Munich. It has been a busy week, but overall it was simply a great experience. We were also glad to meet some of you in person and have a closer discussion.
Let's start with the active stabilizer that we placed below the Sigma Acoustics MAAT speaker. In cooperation with Aldo Zaninello we tried for the first time our ATLAS units, which are originally designed for heavy payload systems in semiconductor industry, below his loudspeakers. It started as an experiment with unknown outcome. But very soon all participants realized what a huge improvement the active stabilizers achieved.
The Atlas units serve two functions: isolating the speakers against vibrations from the floor, and more importantly stabilizing them against vibrations generated by the speakers themselves. Typical active vibration isolators known in high-end audio would not be capable to achieve this result, since their active control forces are too small.
Certainly the ATLAS units are overdesigned for this task, but they showed what is possible. The bass was definitely much sharper, and booming was strongly reduced. The introduction of vibrations into the floor was eliminated, which means other objects like chairs, tables and boxes did not resonate. The improvement was so strong that Aldo did not want to miss them for the rest of the show.
In the near future, Seismion will bring out an high-end audio compatible product based on this.
Sebastian and I are just back from Munich. It has been a busy week, but overall it was simply a great experience. We were also glad to meet some of you in person and have a closer discussion.
Let's start with the active stabilizer that we placed below the Sigma Acoustics MAAT speaker. In cooperation with Aldo Zaninello we tried for the first time our ATLAS units, which are originally designed for heavy payload systems in semiconductor industry, below his loudspeakers. It started as an experiment with unknown outcome. But very soon all participants realized what a huge improvement the active stabilizers achieved.
The Atlas units serve two functions: isolating the speakers against vibrations from the floor, and more importantly stabilizing them against vibrations generated by the speakers themselves. Typical active vibration isolators known in high-end audio would not be capable to achieve this result, since their active control forces are too small.
Certainly the ATLAS units are overdesigned for this task, but they showed what is possible. The bass was definitely much sharper, and booming was strongly reduced. The introduction of vibrations into the floor was eliminated, which means other objects like chairs, tables and boxes did not resonate. The improvement was so strong that Aldo did not want to miss them for the rest of the show.
In the near future, Seismion will bring out an high-end audio compatible product based on this.
It was so nice to meet Marcus and Sebastian in the show. They brought over 15 isolators and were demonstrated in three rooms.
Major brands like darTZeel, Rockport speaker and Sigma Acoustics were using Seismion isolators. They didn’t get enough to satisfy the demand. The result was undeniable. They didn’t want to turn them off.
Major brands like darTZeel, Rockport speaker and Sigma Acoustics were using Seismion isolators. They didn’t get enough to satisfy the demand. The result was undeniable. They didn’t want to turn them off.
Last edited:
The CSPort turntable was also sounding great on top of a Reactio Plus. Wouldn't have been possible to play vinyls at such high volumes, as Francois did, without active sub Herz isolation and stabilisation!
Sebastian
Sebastian
Similar threads
 | Steve Williams Site Founder | Site Owner | Administrator |  | Ron Resnick Site Co-Owner | Administrator |  | Julian (The Fixer) Website Build | Marketing Managersing |