[Elecraft] [K3] Audio circuit distortion

[David Gilbert]

I have to admit that I didn't realize mechanical vibrations at the wall 
socket were such a problem.

http://www.revolutionpower.com/p/Oyaide+WPC-Z+Faceplate/58/ ($249.00)

Actually, I respect this company for it's audacity and for the economic 
Darwinism it promotes.    ;)

73,
Dave   AB7E



On 7/23/2013 3:07 PM, Wes (N7WS) wrote:
> Speaking of P.T. Barnum, here are his offspring: 
> http://www.revolutionpower.com/o/Oyaide/
>
> I'll bet that the people who buy this crap would be aghast to know 
> that the power company has supplied their AC power through oxidized 
> aluminum wire and some of those electrons came from nuclear power 
> plants and are radioactive!!!.
>
>
>
>
>
> On 7/23/2013 2:50 PM, Brian Hemmis wrote:
>> 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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