Bill, Look for an efficient speaker, and a 4 ohm impedance will give you twice the audio power vs. an 8 ohm speaker. Most common speakers are 8 ohm. P=V^2/R - the driving stage determines the V^2 value (the LM380N is really a special high power op amp with a low output impedance, so the voltage developed at the output does not depend on the load until the load resistance is very low), but higher resistances mean less power will be developed across the speaker.
73, Don W3FPR > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of William E. > Twaddell > Sent: Sunday, March 06, 2005 2:00 PM > To: Elecraft@mailman.qth.net > Subject: [Elecraft] Outboard speaker > > > Looking for an outboard speaker for the K2 sr# 1837. > Any suggestions. > There is one in QST but it is very pricey. > tnx > 72 > Bill > N2DH > _______________________________________________ > Elecraft mailing list > Post to: Elecraft@mailman.qth.net > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com > _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
