I've been real happy with Sennheiser PC350 headset/boom mike.
Features
* Noise isolationg earcups
* Noise cancelling microphone
* E.A.R. system for critical location of audio cues
* Replaceable earpads
* Connects to PC soundcard via dual 3.5mm jacks
Technical Data
Cable length 9.8 ft. (3 m)
Connector Two 1/8�?� / 3.5 mm plug
Distortion < 0.1%
Frequency response 10 Hz �?? 26,000 Hz
Frequency response 50 Hz . 16,000 Hz
Headphone Around-the-ear, closed
Impedance 150 Ω
Pick-up Pattern Noise cancelling
Sensitivity 108 dBSPL
Sensitivity -38 dBV at 94 dBSPL
Speaker data Dynamic, 38 mm, Nd magnet
Not exactly the 200 or so that I guess the K3 wants to see, but close
and they are very much more comfortable than the Proset's or JBL's,
even after 4 or 7 hours in front of the K3.
MSRP is over $200 but with some looking and searching you can find them
for around $150.
73 Hank K8DD
Paul Christensen wrote:
However being that you mention the K3 you'll want to either ensure you
use higher impedance headphones or ensure that you change the series
caps in the headphone circuit from 10uF to 100uF.
Not too many high-end headphones will be available with an average Z of more
than 100 ohms across the audio spectrum. With the stock 10uF caps in the
K3, one would need to find a set in the area of 200-ohms or so to extract
decent low-end response. When you get up in that Z range, the available
headphone options quickly diminish.
Several SMD replacement caps exist for the K3's headphone coupling caps at
C9, and C13, but Mouser P/N 647-UUD1A101MCL (made by Nichicon) is a good
choice at only 65-cents each.
Paul, W9AC
______________________________________________________________
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
