On 6/19/2012 8:59 AM, Scott Manthe wrote: > Those are good recommendations, Joe.
A couple of other points. First, there's virtually no speech energy below 200 Hz -- anything the mic picks up in that range is hum, noise, and breath pops -- so it is good engineering practice to roll off (that is full cut) of the 50 Hz and 100 Hz band. Second, while I don't know the specifics of the Heil mics, I'd guess that there's a strong presence peak around 3 kHz to compensate the rolloff produced by crystal filters in both the TX and the RX. This is also good engineering practice, but taken too far can be too bright. The easy solution in the K3 is to use some cut on the highest (and perhaps next to highest) filters. Third, a little proximity effect goes a long way, and proximity effect is VERY sensitive to distance. Proximity effect also increases breath pops and handling noise. When you work a mic TOO close, proximity effect will cause the lows to get louder and softer with very small changes in distance from your mouth. I use a Yamaha CM500, and keep it a few inches above and to the side of my mouth so that breath pops don't hit it (and so that I can swig coffee). I have the TXEQ and compression adjusted for competitive contesting and DX audio, and I get reports of great audio. Like Joe and Scott, I'm a retired broadcast and pro audio engineer, and I own several dozen pro mics, but I use the $40 Yamaha in my ham station. 73, Jim K9YC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
