The Pin 1 Problem

Mirrored from www.pin1problem.com

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The purpose of this page is to share information about what is known or more accurately "UNKNOWN" as a PIN 1 PROBLEM in the audio industry. The term "Pin 1 Problems" was first coined by Mr. Neil Muncy in his June 1995 paper Noise Susceptability in Analog and Digital Signal Processing Systems.

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You might be surprised to find out that all that humming, buzzing, and noise coming out of your PA & monitor system is being caused by poorly designed gear! In many cases, there isn't anything you can do besides replace the offending gear with well designed gear.

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Related Links:

• Jim Brown's paper part 1

• Jim Brown's paper part 2

• Jim Brown's paper on SCIN - part 1

• Jim Brown's paper on SCIN - part 2

• Rane's page on the Pin 1 Problem

• Jensen paper on How to build a "Hummer" to test for a Pin 1 Problem

• Peavey article on Pin 1

• Article by Philip Giddings

• Audio Systems Group PDF on the Pin 1 problem & HAM radio

• Tony Waldron's (of CADAC) article on EMC - part 1

• Tony Waldron's (of CADAC) article on EMC - part 2

• Tony Waldron's (of CADAC) & Keith Armstrong's article on correct shield bonding

• Rane's version of Jim Brown's paper in a different format

• Henry Ott's technical articles on EMC,EMI, proper grounding, etc...

• Henry Ott's tech tips on EMC,EMI, proper grounding, etc...

• Bill Whitlock's - AES 05 "An Overview of Audio System Grounding & Shielding"

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If you have any corrections or comments regarding the information presented on this site, email rabyn@rabyn.com.