Bill, I also experienced a very quality system at a friend's house ~ 1976 and it was amazing. A wall of speakers and beautiful volume, concert level and able to talk. Reminds me of my Dynaco A60 speakers and amp. This was the best audio at the time and I starved to save $'s to purchase this audio equipment, while stationed in Germany, from the PX. In the Signal Corp we were trained techs in audio for the passing of traffic to and fro from Korat AFB to Viet Nam and other linked stations. We learned a ton about audio and equalization and worked diligently to stay within parameters in our multiplexed signals with the best audio equipment for the military and probably anywhere. ( My experience is frozen in memory so I understand what you are writing about. ) A truly fantastic experience. Yes, I can still hear with damage done from shooting ranges, concussion grenades and 105 dB alarms at the site when parameters failed. Other than that, life now is good.
73, Bill K9YEQ -----Original Message----- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bill Frantz Sent: Saturday, December 31, 2016 8:30 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Amplifiers in general A group of about 5 of my friends and I noticed this effect at a early 1970s Grateful Dead concert at the San Francisco Cow Palace. They were testing a new sound system which came to be called "The Wall of Sound". While the music was definitely loud, very loud, we could have a normal conversation with each other, something we had never been able to do at other concerts. We concluded that the very low harmonic and IMD distortions of the sound system made it easier to decode the (undistorted) acoustic speech. This experience makes me very interested in the level of audio distortion in amateur radio audio chains. The 10% quoted for HTs is much too much for optimum copy. Copy is better if the audio chains are hifi quality for distortion. 73 Bill AE6JV On 12/31/16 at 11:51 AM, caut...@montac.com (Clay Autery) wrote: >I submit that all "noise" is not equal. I'm guessing that you can hear >a radio transmission mathematically below the apparent noise level >because it is "atypical" or "organized noise" as opposed to the "noise" >in the S2 noise floor which is "disorganized". ------------------------------------------------------------------------- Bill Frantz | Re: Hardware Management Modes: | Periwinkle (408)356-8506 | If there's a mode, there's a | 16345 Englewood Ave www.pwpconsult.com | failure mode. - Jerry Leichter | Los Gatos, CA 95032 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to k9...@live.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
