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power conditioner manufacturer on why cleaning Mhz noise is important

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https://www.lotusgroupusa.com/blog/whats-up-with-noise-reduction-in-the-megahertz-range-and-why-does-it-matter

 

I will note that this guy makes $15-$20K power conditioners. Hard for me to understand how such a device can cost so much. Even in audiophiledom with high end parts, seems like it should cost no more than a fraction of that.


Main listening (small home office):

Surge protector +_iFi  AC iPurifiers >Isol-8 Mini sub Axis Power Conditioning+Isolation>CAPS IV Pipeline Server + Sonore 12V PS >SOtM Lan Isolator>Bricasti M5 Network Player >Kii Control>Kii Three >GIK Room Treatments.
 

Secondary Listening: CAPS Pipeline>IFi iOne DAC>Schiit Freya>Kii Three . Also 2 SBT and an SB Boom. 

All absolute statements about audio are false :)

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I will only address this part of their advertising blurb.

 

Quote

So what happens when two frequencies in the megahertz range are within beating distance? They behave in exactly the same manner as two strings.

 

Signals in the megahertz range powerful enough to result in measurements like these are only likely to come from nearby A.M. radio stations which have a mandated separation in  Australia, and many other countries of 9kHz, and should not result in the LF beat notes as described, as their licences also require a very high high frequency stability. Likewise, FM Stereo transmissions in Australia in the 87.6mHz to 108mHZ are separated by 200kHz.

Shortwave AM radio transmissions have a separation of 5kHZ but there is virtually no chance of 2 Shortwave transmitters being located physically close enough to generate beat notes at any meaningful level.

 The RF/EMI from SMPS powered LED lighting etc. is more likely to cause problems than high powered Broadcast transmitters, and only locally at quite a low level which should be rejected by competent design.

Comments on this from qualified members such as Mansr are welcomed.

 

Alex


"If you can't hear the difference between an original CD and a copy of your CD,

you might as well give up your career as a tester. The difference between a reconstituted FLAC and full size WAV is much less than that, but it does exist. - Cookie Marenco"

 

PROFILE UPDATED 31-10-2018

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On 4/6/2019 at 10:04 PM, sandyk said:

I will only address this part of their advertising blurb.

 

 

Signals in the megahertz range powerful enough to result in measurements like these are only likely to come from nearby A.M. radio stations which have a mandated separation in  Australia, and many other countries of 9kHz, and should not result in the LF beat notes as described, as their licences also require a very high high frequency stability. Likewise, FM Stereo transmissions in Australia in the 87.6mHz to 108mHZ are separated by 200kHz.

Shortwave AM radio transmissions have a separation of 5kHZ but there is virtually no chance of 2 Shortwave transmitters being located physically close enough to generate beat notes at any meaningful level.

 The RF/EMI from SMPS powered LED lighting etc. is more likely to cause problems than high powered Broadcast transmitters, and only locally at quite a low level which should be rejected by competent design.

Comments on this from qualified members such as Mansr are welcomed.

 

Alex

Alex is quite correct here. This is another case of a  seller “inventing” a problem for his product to solve. Yeah, it’s conceivable that this could happen, but it’s not very likely. And if your audio equipment can’t filter this problem out of your mains supply on its own, then a decent one-to-one isolation transformer for a couple of hundred bucks (or less, depending on how big it needs to be for your purposes) should certainly be sufficient to block frequencies that high from getting past it in the first place.


George

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