Telos

Isolation


Platforms


Minus K Technology: 100-BM8

1/2Hz Isolation Platform - Passive

Low frequency vibrations come from many causes such as seismic activity, highway traffic, airports, building HVAC systems, etc. They are particularly troublesome for mechanical audio components and transports. Low and ultra low frequencies are more prevalent, as they can travel over long distances, from numerous constant sources, through buildings and into environments such as audio listening rooms. MinusK have solutions to isolate from these vibrations.

Minus K Technology was founded in 1993 by Dr. David Platus, and specializes in ‘patented negative-stiffness technology’. In simple terms, this type of platform utilizes spring mechanisms in a completely mechanical configuration to isolate a support plate. This contrasts with the use of counteracting force approaches employed in active isolators such as electronic force-cancellation systems.

www.minusk.com shows a comprehensive level of information that includes videos of how these isolators work in real world conditions. Predominantly used for scientific laboratories and research facilities to isolate electron-microscopes and other sensitive measurement equipment the Audiophile world has sat up and taken notice of how well they work under turntables, cd-transports, DAC's and preamplifiers.

MinusK Negative-stiffness isolators provide a simple, reliable, and highly effective isolation solution for sensitive instrumentation at the low frequencies and amplitudes of floor and building vibrations. They are relatively small, light weight, stable, and cost-effective.

Minus K negative-stiffness isolators are completely mechanical; for special applications, an optional electronic auto-adjust system is available. Isolation is achieved using an arrangement of springs and negative-stiffness mechanisms.

These systems provide isolation in 6 degrees of freedom with resonant frequencies as low as 0.5 Hz or lower. For a 0.5-Hz system, isolation begins around 1 Hz and is 50-100 times better than most high-performance air tables in the 5-10 Hz range which is so important in buildings.

Minus K's negative-stiffness technology has been successfully implemented for sensitive instrumentation loads from a few pounds to many tons. The isolators are easy to use and adjust. They can be more economical than air systems, take up less space, provide better isolation at very low vibration amplitudes, and require no maintenance.

They consistently outperform active and air systems.

SPECIFICATIONS:

Weight: Approximately 40 lb. (16 kg)

Dimensions: 18” W x 20” D x 4.6” H     (457mm W x 508mm D x 117mm H)

Approximate payload weight range:

Model Payload Range

25BM-8           10 - 30 lb (4.5 - 14 kg)

50BM-8           25 - 55 lb (11 - 25 kg)

100BM-8          50 - 105 lb (23 - 48 kg)

125BM-8          90 - 130 lb (40 - 59 kg)

150BM-8         125 - 155 lb (57 - 70 kg)

175BM-8         150 - 180 lb (68 - 81.5 kg)

200BM-8         175 - 205 lb (79.5 - 93 kg)

225BM-8         200 - 230 lb (90.5 - 104 kg)

250BM-8         225 - 255 lb (102 - 115.5 kg)

Performance

Horizontal frequencies are weight dependent.

Horizontal frequency of 1.5 Hz (or lower) is achieved at the upper limit of the payload range.

At the lower limits of the payload range the horizontal frequency is approximately 2.5 Hz.

Vertical frequency is tunable to 0.5 Hz throughout the payload range.

Simple Set-Up and Adjustment

We have implemented MinusK solutions globally in many high-end audio systems with dramatic effects. Most users start with a CD-Transport or Turntable application in mind and quickly realise how sensitive Preamplifiers and DAC's are to vibration.

Loudspeakers generate floor born vibration often close to the equipment used for playback. This feedback loop can be broken by adding MinusK platforms under your audio gear.

Stunning differences. Cleaner bass, more "air" in the soundstage. It's not subtle!

Reviewers love MinusK!

http://www.6moons.com/audioreviews/minusk/platform.html

http://dagogo.com/minus-k-100bm-1-vibration-isolation-platform-review



Minus K Technology: 250-BM1

1/2Hz Isolator Passive

Low frequency vibrations come from many causes such as seismic activity, highway traffic, airports, building HVAC systems, etc. They are particularly troublesome for mechanical audio components and transports. Low and ultra low frequencies are more prevalent, as they can travel over long distances, from numerous constant sources, through buildings and into environments such as audio listening rooms. MinusK have solutions to isolate from these vibrations.

Minus K Technology was founded in 1993 by Dr. David Platus, and specializes in ‘patented negative-stiffness technology’. In simple terms, this type of platform utilizes spring mechanisms in a completely mechanical configuration to isolate a support plate. This contrasts with the use of counteracting force approaches employed in active isolators such as electronic force-cancellation systems.

www.minusk.com shows a comprehensive level of information that includes videos of how these isolators work in real world conditions. Predominantly used for scientific laboratories and research facilities to isolate electron-microscopes and other sensitive measurement equipment the Audiophile world has sat up and taken notice of how well they work under turntables, cd-transports, DAC's and preamplifiers.

MinusK Negative-stiffness isolators provide a simple, reliable, and highly effective isolation solution for sensitive instrumentation at the low frequencies and amplitudes of floor and building vibrations. They are relatively small, light weight, stable, and cost-effective.

Minus K negative-stiffness isolators are completely mechanical; for special applications, an optional electronic auto-adjust system is available. Isolation is achieved using an arrangement of springs and negative-stiffness mechanisms.

These systems provide isolation in 6 degrees of freedom with resonant frequencies as low as 0.5 Hz or lower. For a 0.5-Hz system, isolation begins around 1 Hz and is 50-100 times better than most high-performance air tables in the 5-10 Hz range which is so important in buildings.

Minus K's negative-stiffness technology has been successfully implemented for sensitive instrumentation loads from a few pounds to many tons. The isolators are easy to use and adjust. They can be more economical than air systems, take up less space, provide better isolation at very low vibration amplitudes, and require no maintenance.

They consistently outperform active and air systems.

SPECIFICATIONS:

BM-1 Bench Top Vibration Isolation Platform

Weight: Approximately 80 lb (36 kg)

Dimensions: 24" W x 22.5" D x 9" H

(610mm W x 572mm D x 216mm H)

Load Capacities (approximate):

Model Payload Range

100BM-1           60 - 100 lb (27 - 48 kg)

150BM-1           90 - 155 lb (41 - 70 kg)

250BM-1          180 - 270 lb (82 - 123 kg)

350BM-1          290 - 370 lb (132 - 168 kg)

500BM-1          360 - 525 lb (164 - 239 kg)

650BM-1          500 to 680 lb (227 - 309 kg)

850BM-1          630 - 900 lb (285 - 408 kg)

1000BM-1        890 to 1050 lb (403 - 476 kg)

Performance

Vertical natural frequency of 1/2 Hz or less can be achieved over the entire load range.

Horizontal natural frequency is load dependent. 1/2 Hz or less can be achieved at or near the nominal load.

See Performance for a typical transmissibility curve with 1/2 Hz natural frequency.

Simple Set-Up and Adjustment

We have implemented MinusK solutions globally in many high-end audio systems with dramatic effects. Most users start with a CD-Transport or Turntable application in mind and quickly realise how sensitive Preamplifiers and DAC's are to vibration.

Loudspeakers generate floor born vibration often close to the equipment used for playback. This feedback loop can be broken by adding MinusK platforms under your audio gear.

Stunning differences. Cleaner bass, more "air" in the soundstage. It's not subtle!

Reviewers love MinusK!

http://www.6moons.com/audioreviews/minusk/platform.html

http://dagogo.com/minus-k-100bm-1-vibration-isolation-platform-review