On Tue,3/22/2016 8:36 AM, Bill Davis via Elecraft wrote:
I use RX equalization AFTER I find a speaker that I can live with.
I suspect that the frequency response of the Motorola speakers are carefully shaped for maximum speech intelligibility in a noisy environment, and their response may be peaked a bit in the upper speech range. In the years when those loudspeakers were developed, Motorola was the premier 2-way radio company on the planet, and full of great engineers.
IMO, the BEST speakers and headphones for ham radio are those which have FLAT response (that is, equal at all frequencies) within the speech range (100 - 5,000 Hz) and low distortion. If they have wider response (like hi-fi speakers), that's still good. And if their low frequency response is rolled off, that's even better!
I would adjust RXEQ WHILE choosing an external speaker, tweaking settings for each one as you try it. If, for example, peaky response of a particular loudspeaker bothers you but it's a good quality (low distortion) loudspeaker, RXEQ can be used to reduce that peak to make your ear/brain happy.
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 Message delivered to [email protected]
