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- Newsgroups: rec.audio
- Path: sparky!uunet!sun-barr!cs.utexas.edu!sdd.hp.com!elroy.jpl.nasa.gov!decwrl!decwrl!world!DPierce
- From: DPierce@world.std.com (Richard d Pierce)
- Subject: Re: PNP vs NPN Output Stages
- Message-ID: <BxGEJK.2FL@world.std.com>
- Keywords: Lock
- Organization: The World Public Access UNIX, Brookline, MA
- References: <1992Nov9.113458.16272@EE.Surrey.Ac.UK>
- Date: Mon, 9 Nov 1992 14:50:07 GMT
- Lines: 32
-
- In article <1992Nov9.113458.16272@EE.Surrey.Ac.UK> R.Bish@EA.surrey.co.uk (Rob Bish) writes:
-
- >Here at ExtrAudio we have recently been studying the comparative merits of
- >PNP vs NPN transistor audio output stages. The results are indeed
- >interesting. PNP transistors were found to have preferable characteristics
- >owing to their warmer more precise sound which listeners believed created
- >a sound reproduction environment more suited to the rendition of
- >quintessentially romantic lyricism, but NPN transistors were more at one
- >with the idiom of Baroque counterpoint.
- >
- >***** if you like Bach use NPN *****
- >***** if you like Chopin use PNP ***
- >
- >We are currently working on an output design that allows the audiophile to
- >switch between NPN and PNP output stages depending upon taste and source
- >material, with a hybrid NPN/PNP transistor for those who like Elgar.
- >
- >We believe this effect owes to the higher speed of electrons through an
- >N-type junction being relativistically effected (by the uncertainty
- >principle) leading to noise and distortion, particularly noticeable at low
- >frequencies.
- >
- >Has anyone else observed this effect, and can they shed any light on the
- >cause?
-
- PLEASE, GOD, LET THERE BE A SMILEY FACE SOMEWHERE IN THIS POSTING!
-
- --
- | Dick Pierce |
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