Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!cs.utexas.edu!wuarchive!swbatl!texbell!swpyr2!ammrk
From: ammrk@swpyr2.sbc.com (Mike R. Kraml)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: A1000 filter
Message-ID: <60@swpyr2.sbc.com>
Date: 25 Mar 91 02:13:44 GMT
References: <48599@nigel.ee.udel.edu>
Reply-To: ammrk@swpyr2.UUCP (Mike R. Kraml)
Organization: Southwestern Bell Tele. Co. - Finance Dept. - St. Louis, Missouri
Lines: 27

In article <48599@nigel.ee.udel.edu> Dickson@system-m.phx.bull.com (Paul Dickson) writes:
>> It it the audio-filter I am talking about.  If I am not totally
>> mistaken the low-pass filter on a A1000 is permanently on and it
>> can't be turned off as is possible on all the other Amigas
>> unless you do some hardware fixing.  In other words you are
>> stuck with a poor sound output.
>
>There is no audio filter on the A1000.  The filter was added to the
>other Amigas to reduce aliasing noise on the audio output, but can be
>turned off by software.
>
>          -Paul Dickson
   Try again!!!  Yes, the A1000 does have an "always enabled" 7kc audio
   filter.  Its plainly in the service manual, and I have personally 
   disabled a few myself.  There was a hack put out by AC computing a
   few years back that allowed you to attach it to the LED similar to 
   the way the 500/2000/3000 work, if someone is interested I'll look
   through my old Amazing mags.  

												  Later, Mike...


-- 
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  Mike Kraml - Manager-Separations Mechanization - SWBT - Finance Department
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