Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!uwm.edu!zaphod.mps.ohio-state.edu!samsung!uunet!dino!ux1.cso.uiuc.edu!tank!mimsy!mojo!cyliao
From: cyliao@eng.umd.edu (Chun-Yao Liao)
Newsgroups: comp.sys.apple2
Subject: Re: Apple IIGS Rules! (vs IBM and Mac)
Message-ID: <1990May8.184135.15142@eng.umd.edu>
Date: 8 May 90 18:41:35 GMT
References: <2561@crash.cts.com>
Sender: news@eng.umd.edu (The News System)
Organization: College of Engineering, Maryversity of Uniland, College Park
Lines: 29

In article <2561@crash.cts.com> lhaider@pro-sol.cts.com (Lawrence Haider) writes:
>In-Reply-To: message from cyliao@eng.umd.edu
>>    here, one thing to say... the GS DOES stereo, shame on Apple that did
>>    not build the stereo line to the headphone jack. Don't believe me?
>>    After reading the GS hardware ref, my friend built his own stereo
>>    card by using 3 transistors and one audio amplifier. The stereo hard
>>    ware is IN the GS, but all you need are 3 transistors to correctly
>>    send the sound to different channel, that's it!
>
>Ok, let's get this gadget into production!  I'd gladly pay $10-$20 for such a
>setup to get stereo sound from my headphone jack, or even a separate jack!

Quite a lot people sent me mail asking for a schematic diagram of the circuit..
Now, here, not a too good news, but I am trying.

First of all, my friend lives in Argentina... the country where I came from...
The ARG mail is nothing like US mail.  Last time it took over 2 months to get
here, well, sometimes it took just about 1 month.  I send him letter over a
month ago before I posted the above message, so hopefully I will get his mail
withing few weeks. I will post the circuit ASAP. BTW, since we are not very
into audio circuit, the amplifier part might not be that good.. but at 
least theoretically the channal is separeted, and we tested it... worked!


--
cyliao@wam.umd.edu     		o NeXT :  I put main frame power on two chips.
      @epsl.umd.edu		o people: We put main flame power on two guys.
      @bagend.eng.umd.edu       o ::::::::::::::::::::::::::::::::::::::::::::
 xxxxx@xxxxx.xxx.xxx (reserved)	o RC + Apple // + Classic Music + NeXT = cyliao