Has anyone heard the new North American products preamp and amp?

gdhal, why would you say this? It is true that there are many who haven't heard it but many other than me have. None have had anything bad to say about it. Does that bother you as it does someone else on this thread?

Tbg wrote,


"Geoffkait, so what is best for music isolation or draining vibrations and why?

Geez, how long have you got? I could write a book. I have a funny feeling you’re looking for something short and sweet, though.

"Somebody on this thread some time ago sold "Brilliant pebbles" in a bottle and later decided that having them in a bag was better. Was science and measurement involved. Incidentally, someone else on this thread thought that they did some good."

Yup, that somebody would be your humble scribe. And, yes, there is science behind Brilliant Pebbles. There are also measurements involved, such as figuring out where exactly in a given room the various sizes of BP should be placed. For example, in room corners on the floor I measured around 6 dB higher sound pressure level than the average SPL in the room, so that would be a good place for the large BP.  Power to the Pebble is the explanation for the pebbles and can be found on my web site at,

machinadynamica.com/machina17.htm

cheerios

geoff kait
machina dynamica

geoofkait

Pebble is the explanation for the pebbles and can be found on my web site

Interesting stuff -

Geoff,

You didn't answer the prime question in the first sentence. Also what measurements were made to decide what pebbles should be used?

Tbg wrote,

"Geoff,

You didn’t answer the prime question in the first sentence. Also what measurements were made to decide what pebbles should be used?"

well, obviously I am quite fond of mechanical springs, and I can now isolate anything between 1 lb and 250 lb or more as they are scalable. I am also a fan of using roller bearings in conjuction with springs, you know, to extend the number of directions of motion that are isolated. I am also a big fan of bungee cords, believe it or not. My Promethean and Nimbus iso stands, no longer on production, came with Tekna Sonic dampers attached to the top plate, which were use to quiet the top shelf. I also at one time used viscoelastic damping for the larger springs I used to sell, that have evolved into the smaller and lower profile springs. I also cryogenically treat springs these days and have a number of different springs to choose from depending on load requirements. In many cases the springs can be placed directly underneath the component as they are inherently higher in lateral stability than the older larger springs. I am a big fan of using the NASA grade ceramic cones from Golden Sound not only as support cones but as node dampers on speakers, components, top plate, etc. I also have a very specialized constrained layer damper (VibraBlock) for damping  large transformers and the top plate of iso platforms.  I sell natural cork for isolating, well, technically damping, printed circuit boards from the deleterious physical effects of the transformer. I also use natural cork strips to suppress the natural inclination for capacitors to vibrate during operation as well as the physical influence of the transformer. Who’s idea was it to bolt down the transformer and the printed circuit boards, anyway? Lol As the energy requirements get scaled back from the room corners to less demanding applications I use smaller and smaller BP; so for windows, in proximity to small tubes, on connectors of interconnects, etc. I use what I refer to as the Mirko, the smallest BP. Each Mikro contains a number of different types of mineral crystals, tiny crystals, which each have a certain bandwidth of operation, as it were, based on it’s unique crystal structure. Brilliant Pebbles debuted at the London Hi Fi Show (OMG has it really been 10 years ago?!) and I was informed by the exhibit’s organizer that many attendees in the room exclaimed that particular exhibit was not only the best sound at the show but the best sound they had ever heard. There was one Large Brilliant Pebbles in each room corner and one Large BP on the top of each speaker cabinet.

geoff kait
machina dynamica
we do artificial atoms right!