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August 13th 09, 02:32 PM
posted to rec.radio.amateur.equipment,rec.radio.amateur.misc
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Best external speaker for SSB phone?
Dennis Whatley wrote:
With aging ears, the frequency response above 8 kHz is not considered by the medical trade. If you have a recognized HF imparement then what are we talking about? Above 1 or 2kHz? This is not so uncommon. There are several tricks you can use, your ears may be impared, but not your brain. For example, use one or more of the following: 1 - Use stereo HiFi headphones - also good for blocking out external noise and increasing concentration. Communications headphones have a restricted response, which is NOT what you want. 2 - Use your HiFi system graphic equalizer - works wonders with aging ears. Can make any speaker/headphone more suited to just your ears. People are throwing these things away at the moment. 3 - Although designed for CW use, a hi-pass filter feeding the left-hand channel and low-pass filter feeding the right-hand channel of stereo headphones/speakers also work wonders. It spreads the AF spectrum out as a frequency image across the viewing area in front of you. Each CW station can be heard in a different physical location. Cost is about $2 for the components. Using this technique SSB can become more understandable, since CW and other interference is often positioned at very specific points in the stereo image and can be more easily ignored, just like advertising plackards on the motorway, or commercial breaks on the telly. If you proof as to your brains ability to filter, then just try listing all the adverts you saw on the TV last night, or saw on the motorway. You probably saw 60+ on the TV, or 200+ if you went on a "shopping trip" downtown, but if you can remember four of them then you are doing well. DW Killer advice. FB. |
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