[AMRadio] Speaker


W7QHO at aol.com W7QHO at aol.com
Fri Jul 29 20:54:26 EDT 2005


In a message dated 7/29/05 4:12:42 PM, hwr79 at chilitech.net writes:


> Anyways was wandering what some of you guys are useing that are not useing 
> matching speakers for there receivers. Also the Hammarlund calls for 4 ohm 
> speaker and was wandering if the audio fidelty would still be OK useing an 8 
> ohm speaker of some sort?
> 

Herb,

Well, I use a pair of Hammerlund speakers with my 51J4 and R390A.   Also, a 
cheap "Hi-fi" speaker with my AR-88 and a Hallicrafters R-42 with my HQ-180.   
Other combinations as required. Four, 8, 16 ohms speaker/reciever impedances 
-- mix them all up and I, at least, can't tell any difference (am sure there 
will be some comment on this).   Impedance matching does become an issue, 
though, with the military stuff which usually has 600 ohm outputs (my R390A audio 
has been modified for 8 ohms).   Some of the old Hallicrafters sets had 2000 and 
5000 ohm outputs the these require a matching transformer which was included 
in Hallicrafters speakers of the period.

Dennis D. W7QHO
Glendale, CA



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