boy that idea takes you back,, some surplus (ww2) receivers used dc on the filaments so when you ran them on ac there was residual hum and a series cap in the speaker lead took care of that bob K3DJC
rb On Sat, 20 Nov 2010 09:35:01 -0800 Jim Brown <[email protected]> writes: > On 11/19/2010 6:23 PM, Luis V. Romero wrote: > > These Orions are really bassy. > > I understand. Makes you appreciate the K3 even more -- no need for > the > W2IHY unit, or for external EQ. > > Take a look at the simple circuit that Joe, W4TV, posted yesterday. > > It's a very old broadcast engineering technique that we both > remembered. > I've used the series capacitor when I wanted to use other pro mics > with > ham rigs that lacked mic EQ, and it worked quite well. You'll see > that > in the Ham Interfacing tutorial that I posted to my website several > > years ago. The cap is for LF rolloff, not DC blocking (which is not > > needed). The only trick is finding the small cap needed to fit > inside > the connector. > > 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 > > ____________________________________________________________ Get Free Email with Video Mail & Video Chat! http://www.juno.com/freeemail?refcd=JUTAGOUT1FREM0210 ______________________________________________________________ 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
