Nuforce REF9 v2 noise and RF interference levels

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dlite

  • Jr. Member
  • Posts: 7
Nuforce REF9 v2 noise and RF interference levels
« on: 7 May 2007, 07:17 am »
Hi Jason,
One thing I am particularly interested in, is has the interference generated by the REF9 been reduced significantly in the version 2? 
This was the only reason why I did not buy the REF9.02, because it severely interfered with FM and TV reception.  Please tell me this is no longer a problem in V2.  As I considered this a major design flaw I hope it was addressed.

Thanks 

nuforce-casey

  • Industry Participant
  • Posts: 357
Re: Nuforce REF9 v2 noise and RF interference levels
« Reply #1 on: 7 May 2007, 06:11 pm »
V2  has lower noise floor and RF energy are 20dB lower.   

In a general sense, V2 has no FM compatibility issue, but it's subject to everyone's unique situations:

The bottom line is fairly simple, it's a matter of Signal vs. Noise.   Switching amplifier has more RF energy, and it increases the 'FM noise floor', so the FM tuner sees less Signal.  A weaker station may get interference, while a strong station would seem immune.  A more selective FM tuner have better ability to 'pick up' signals, and the location of the antenna (The energy deteriorates exponentially, so the further away the antenna, the better S/N selectivity). 

dlite

  • Jr. Member
  • Posts: 7
Re: Nuforce REF9 v2 noise and RF interference levels
« Reply #2 on: 8 May 2007, 12:38 am »
Thanks Casey.
Thats great to here I will give NF another chance and get a pair to try at home.

My situation was quite severe and airborne interference, was travelling at least several metres away and through a double brick wall. I have my suspicions that the use of 240 volt over here may increase the RFI. 

rustydoglim

  • Industry Contributor
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    • www.nuprimeaudio.com
Re: Nuforce REF9 v2 noise and RF interference levels
« Reply #3 on: 8 May 2007, 05:20 am »
So far dealers who received V2 reported that the RFI on FM is no longer an issue.
You can take a look at the RFI plot at the end of this page: http://www.nuforce.com/plots_ref9V2.htm