[Elecraft] OT: Yamaha 'phones specs: has the world gone mad?
After all of the discussion on here about WHY some guys might perceive noise where others do not, why are 'phones with these specs even being considered for a K3 (unless your own hearing cuts off at 4kc). Frequency Range 20 Hz - 20 kHz Microphone Type Dynamic Mic Frequency Response 100 Hz - 20 kHz Impedance Headset: 120 Ohms Microphone: 600 Ohms Give me 'phones designed for communication any day of the week (EG: Kenwood HS-5, which is what I've have used for ham radio for ever). de Doug KR2Q __ 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
Re: [Elecraft] OT: Yamaha 'phones specs: has the world gone mad?
We've been through this before. Where have you been? --- On Mon, 1/11/10, DOUGLAS ZWIEBEL doug...@gmail.com wrote: From: DOUGLAS ZWIEBEL doug...@gmail.com Subject: [Elecraft] OT: Yamaha 'phones specs: has the world gone mad? To: Elecraft Reflector elecraft@mailman.qth.net Date: Monday, January 11, 2010, 11:10 AM After all of the discussion on here about WHY some guys might perceive noise where others do not, why are 'phones with these specs even being considered for a K3 (unless your own hearing cuts off at 4kc). Frequency Range 20 Hz - 20 kHz Microphone Type Dynamic Mic Frequency Response 100 Hz - 20 kHz Impedance Headset: 120 Ohms Microphone: 600 Ohms Give me 'phones designed for communication any day of the week (EG: Kenwood HS-5, which is what I've have used for ham radio for ever). de Doug KR2Q __ 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 __ 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
Re: [Elecraft] OT: Yamaha 'phones specs: has the world gone mad?
No Doug, the world has not gone mad :-) What you seem to overlook is that reproduction (even in communications) has to be linear. Be it from 50-8000Hz or from 300-2700Hz or 400-600Hz, that's not important. Within the chosen passband response,filters and transducers should be linear for faithfull reproduction of signals. If you buy a radio with variable bandpass and TX/RX EQ, the headset imho shouldn't limit your options. And a 20-2Hz headphone *may* perform better at linearity... 73' Paul PD0PSB DOUGLAS ZWIEBEL wrote: After all of the discussion on here about WHY some guys might perceive noise where others do not, why are 'phones with these specs even being considered for a K3 (unless your own hearing cuts off at 4kc). Frequency Range 20 Hz - 20 kHz Microphone Type Dynamic Mic Frequency Response 100 Hz - 20 kHz Impedance Headset: 120 Ohms Microphone: 600 Ohms Give me 'phones designed for communication any day of the week (EG: Kenwood HS-5, which is what I've have used for ham radio for ever). de Doug KR2Q __ 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 -- View this message in context: http://n2.nabble.com/OT-Yamaha-phones-specs-has-the-world-gone-mad-tp4287088p4287899.html Sent from the Elecraft mailing list archive at Nabble.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
Re: [Elecraft] OT: Yamaha 'phones specs: has the world gone mad?
On Mon, 11 Jan 2010 12:22:07 -0800 (PST), Paul, PD0PSB, wrote: No Doug, the world has not gone mad :-) What you seem to overlook is that reproduction (even in communications) has to be linear. Exactly right, Paul. The late Dick Heyser, inventor of Time Delay Spectrometry, among other things, and an engineer working on communications for the space program at JPL, once said that describing a system using only its frequency response was like trying to write poetry with a single word in your vocabulary. The same could be said about antennas and SWR. The numbers for frequency response in the original post failed to include one of the post important parts of the response spec -- the TOLERANCE in +/-dB for the stated response. Furthermore, bandwidth is limited within the K3 by a lowpass filter at the output of the DSP, AND there is a graphic equalizer within the DSP that you can access with RXEQ and set as you like for your ears, loudspeakers, and headphones. FWIW, I always use top quality high fidelity headphones with my ham rigs, including my K3s, and I'm quite pleased with the result. The only time I was happy was with a Ten Tec Omni V, which lacked the low pass filter, and thus sounded hissy. The headphones in my shack are Sony MDR7506 and MDRV-6, Yamaha CM500 (for when I want a boom mic), Etymotic Research ER4, and two Shure in-ear models. 73, Jim K9YC __ 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
