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Contents Vol.14, No.11; November 2001 www.siliconchip.com.au FEATURES 6 Defining The Ideal PA Loudspeaker Public address loudspeakers are usually the poor relations in sound reproduction but they don’t need to be – by Philip Vafiadis 12 Virtual Reality At DaimlerChrysler DaimlerChrysler’s unreal world – cutting manufacturing costs and improving car design PROJECTS TO BUILD 20 100W RMS/Channel Stereo Amplifier, Pt.1 This no-holds-barred audio amplifier is rated at 100W RMS per channel and has very low distortion – by Greg Swain & John Clarke 100W RMS/Channel Stereo Amplifier – Page 20. 32 A Neon Tube Modulator For Cars Simple circuit connects to the sub-woofer output and modulates a neon light to the beat of the bass – by Rick Walters 54 A Low-Cost Audio/Video Distribution Amplifier Easy-to-build unit can distribute six channels of composite video (& stereo audio) or three channels of S-video – by Jim Rowe 64 Short Message Recorder & Player You program it with a wave file up to 4s long via your PC’s parallel port and replay it at the press of a button – by Leon Williams Neon Tube Modulator For Cars – Page 32. COMPUTERS 38 Computer Tips AMD Processor Runs At The Wrong Speed; Video Cards & Shared IRQs; Checking Your Email From Another Computer; Getting Rid Of The Log-on Password; ICS & Thin Ethernet Networks; Internet Connection Sharing & Chat Programs; Freesco – A Simple Internet Gateway For Linux SPECIAL COLUMNS 40 Serviceman’s Log Ring every day until it’s fixed – by the TV Serviceman 80 Vintage Radio Video Distribution Amplifier – Page 54. Test instruments for vintage radio restoration, Pt.1 – by Rodney Champness DEPARTMENTS 2 3 53 74 77 Publisher’s Letter Mailbag Subscriptions Form Products Showcase Circuit Notebook www.siliconchip.com.au 88 91 94 96 Ask Silicon Chip Notes & Errata Market Centre Advertising Index Message Recorder/ Player – Page 64. November 2001  1