Path: utzoo!attcan!uunet!cs.utexas.edu!wuarchive!udel!mmdf From: pmorris@bbn.com (phil morris) Newsgroups: comp.sys.amiga Subject: Re: Speaker on the XT bridgeboard? Message-ID: <15287@snow-white.udel.EDU> Date: 28 Mar 90 20:22:31 GMT Sender: mmdf@udel.EDU Lines: 27 >>Could someone tell me the exact jumpers I need to connect on the >>IBM XT bridgeboard to have a little 8ohm speaker playing on it? >>I think I saw people talking about this before, but any messages >>pertaining to it have ran off my system and I can't read them. >>Thanks for any help. Craig Lemon writes:> >You can't. Period. There is some sort of design bug in the audio circuits >which does not allow it to drive a speaker. I had a fix for this but it >involved replacing a part and cutting a trace (I believe?). Sound is >available at line level (suitable for amplification) at the two pins about >3/4 of the way back at the top of the board. Two wires can be attached to >this pins and run to an RCA (stereo type) jack mounted onto a spare >backplate (usually the one removed when you installed the Bridgecard) which >is then mounted in an unused slot. This can then be connected to the >monitor audio inputs or merged into the Amiga sound at your stereo amp. >Hope you know what I'm talking about... I don't really understand, but I just connected a cheapo RS speaker to the J2 jumper at the top of the board about 3/4 the way back and get the usual PC beeps and such. Phil -------- Phil Morris (pmorris@dgi0.bbn.com) Disclaimer: ME? I'm only a non-smoking cat; can't believe a word I meow.