Hi Jim,
Thanks for the detailed response!
73s and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Technical Specialist
ARRL Volunteer Examiner
ARRL OOC for Oregon
On 3/24/19 7:54 PM, Jim Brown wrote:
On 3/24/2019 4:41 PM, Dave Cole (NK7Z) wrote:
Have you found a good speaker for the K3? If so, which one is it?
For any serious operating, I always use headphones. Speakers are for
casual monitoring. If I were to recommend a speaker, it would be: 1)for
one with very smooth frequency response between 400 Hz and 5 kHz; 2) 4
ohm impedance; 3) a small diaphragm, and 4) high voltage sensitivity.
Contrary to popular misconceptions, wider range response is not a bad
thing.Smooth response in the speech region is important. 4 ohm impedance
means it will receive more power from the K3. A smaller diaphragm
provides smoother off-axis frequency response, high voltage sensitivity
means it will be louder. BUT -- #3 and #4 are conflicting design specs
-- smaller diaphragms have lower voltage sensitivity.
I've used small hi-fi and pro loudspeakers and like the sound, but they
burn too much space on my operating desk now that I have three video
monitors (two P3s, and an extension of the computer's desktop). I
replaced them with little black cubes a few inches that I bought as a
box of 10 at a Chicago area hamfest about 15 years ago. They're plenty
good enough for my needs. I also use them in the car for my
dual-transceiver FM rig, strapped to the two posts on my headrest (two
of them so that I can tell which transceiver the audio is coming from).
73, Jim K9YC
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