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From: parnass@ihuxf.UUCP (Bob Parnass, AJ9S)
Newsgroups: net.audio
Subject: Re: difference between DC & AC
Message-ID: <2073@ihuxf.UUCP>
Date: Fri, 9-Mar-84 10:26:17 EST
Article-I.D.: ihuxf.2073
Posted: Fri Mar  9 10:26:17 1984
Date-Received: Sat, 10-Mar-84 12:35:11 EST
References: <1639@sdccsu3.UUCP>
Organization: AT&T Bell Labs, Naperville, IL
Lines: 25

x
       A recent	submission asked about the meaning of "DC  amplifi-
       ers" as this term relates to the	audio world:

	    A friend and  I  were  looking  over  the  new  Pioneer
	    catalog,  and  noticed  that  they have a line of "non-
	    switching amps". We	assumed	that this meant	a  DC  amp,
	    but	we weren't sure. In fact, we weren't even sure what
	    the	advantage of a DC to an	AC amp was.


       Isn't this term used to mean an amplifier which uses  direct
       interstage   coupling   rather	than  using  capacitors	 or
       transformers?

       The point of avoiding the use of	capacitors and transformers
       is  that	 they  tend  to	 act as	filters, limiting frequency
       response.

       Audio gurus, is this correct?


-- 
==========================================================================
Bob Parnass,  AT&T Bell Laboratories - ihnp4!ihuxf!parnass - (312)979-5760