[Elecraft] [K3] Audio circuit distortion

[Brian Hemmis]

Now they are even selling high end FUSES for your audio gear !
PT Barnum was right ...

Brian K3USC



On Jul 23, 2013, at 5:47 PM, Ron D'Eau Claire <ron at cobi.biz> wrote:

> And there are those who spend hundreds of dollars on a-c power cords for
> their audio systems that have been cryogenically treated to "align the
> copper crystals to avoid turbulence in the a-c power flowing through the
> cord from the wall outlet". 
> 
> The problem is that human perception determines satisfaction, and perception
> is not always based on objective data. 
> 
> 73, Ron AC7AC
> 
> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net
> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Doug Person
> Sent: Tuesday, July 23, 2013 2:25 PM
> To: elecraft at mailman.qth.net
> Subject: Re: [Elecraft] [K3] Audio circuit distortion
> 
> I once wired a guy's $20K audio system with RG8.  He claimed it made all the
> difference.  He also claimed that vinyl was vastly superior to CD's.  I told
> him he had a wonderful imagination.  The very best and cleanest vinyl with a
> radial tracking arm turntable and a top of the line cartridge could just
> barely make a 40db s/n.  Digital audio can do 100db anytime.  Many years of
> selling audio gear taught me about the psychology of hearing.  It takes an
> experienced ear to appreciate a truly flat response. Most people prefer a
> very unbalanced equalization.  
> I got lots of chuckles switching between a $300 system and a $3000 system
> and having most people prefer the cheap setup.
> 
> Having designed loud speakers professionally (of which 1,000s were sold), I
> am equipped with very refined and experienced hearing. Unless you were
> listening to FM broadcast, how could you possibly appreciate a .3% THD?  I
> always assumed anything less than 1% was more than adequate for our kind of
> communications.  If we get down to this level of performance, we'll need to
> work on the 50% or so of stations that only concern themselves with output
> power - not audio quality.  There is a lot of dreadfully distorted signals
> on 20 meter SSB.  Nothing beats working a station that is s9+20 and barely
> understandable because he has compression and mic gain pushed up so he sees
> 1500 watts on his output meter all the time.
> 
> So, IMHO, the K3 has absolutely splendid audio when I have a chance to work
> another station whose audio is actually adjusted correctly.  It amazes me
> that most rigs today have a monitor function.  Must be the most unused
> feature of all time.
> 
> 73, Doug -- K0DXV
> 
> 
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