Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site drufl.UUCP Path: utzoo!watmath!clyde!burl!ulysses!mhuxl!houxm!hogpc!drutx!drufl!pmr From: pmr@drufl.UUCP Newsgroups: net.audio Subject: Re: difference between DC & AC Message-ID: <868@drufl.UUCP> Date: Fri, 9-Mar-84 15:45:00 EST Article-I.D.: drufl.868 Posted: Fri Mar 9 15:45:00 1984 Date-Received: Sat, 10-Mar-84 13:06:28 EST References: <1639@sdccsu3.UUCP>, <2073@ihuxf.UUCP> Organization: AT&T Information Systems, Denver Lines: 16 AC coupling not only limits the frequency response at the low end but also is necessary in some types of amplifier designs to maintain the correct voltage levels (bias) for the next gain stage. The types of capacitors used also effect the quality of the signal passed to the next gain stage. Plastic dielectric capacitors have less reverse leakage and more linear impedances at higher frequencies than the commonly used non-polar electrolytic capacitor. Using plastic dielectric capacitors like polystyrene or metalized polypropylene, although debated by some as to their audibility, helps improve the overall sound. Yours for higher fidelity, Phil Rastocny AT&T-ISL ..!drufl!pmr