A2490

Noise - An Overview
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Noise – A Review of All Types

The various type of car audio noise are presented in a Question and Answer format. Differences in components, installations, and vehicles are discussed. System design for no noise.

A2576

Troubleshooting RFI
$3.5

Noise – Broadcast RFI

A master article on debugging and solving Radio Frequency Interference problems. A description specific problems and solutions are presented.

A2541

Multi Channel Inducted Noise
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Noise – Cable Related

This benchmark article describes how the signal cables in a system actually pick up noise and bring it into the audio. Transformers, UTP cable, balanced line drivers, and signal level is mentioned. This article is 11 pages with many drawings.

A2402

Coaxial Cable Coupling Noise
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Noise - Cables

In car audio, just connecting the components together can cause noise to couple into the system. This article looks at noise from RCA barrel connectors and Y-Cords and presents solutions.

A2486

Mapping Ground Currents in the Car
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Noise – Car Chassis Related

Since the car’s chassis is basically one big wire, the electrical accessories are all connected to one common wire. An inexpensive method of mapping the route of the ground currents is presented. Alternator whine, and locating “quiet” grounding points are discussed.

A2526

Working on David Crosby's BMW 750iL
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Noise – Complex Systems

David Navone worked on a large noise problem for musician David Crosby. The system contained many sources, processors, and amplifiers. Follow David through the troubleshooting and re-installation process. One drawing of system.

A2406

Quantifying Turn On-Off Noises
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Noise - Components

Components are tested for turn-on and turn-off noises and the electrical noises are converted into formulas for acoustic energy. How much turn-on/off noise is acceptable?

A2455

Current, Voltage and Resistance
$3.5

Noise – Grounding, Alternator, Power Wiring

A benchmark article on power grounds, alternator charging, IR-Drops, alternator ripple, and how to optimally ground components in a car audio system.

A2471

Horn Contact Noise in Car Audio Systems
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Noise – How to Solve Horn Pops

A description of the problem of horn contact noise is presented. The problem is explained and solutions are discussed.

A2517

Tracking Induced Noise
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Noise - Inductive

How the noise on the car’s chassis can be traced with the small, hand-held amplifier. Considerations for installation.

A2589

Testing For Cable Induced Noise
$3.5

Noise – Inductive Coupling

An article on a method of mechanically inducing noise into a set of signal cables and then reading and measuring the noise. Some cables are quieter than others. Learn about the differences.

A2445

Avoid the Noise
$3.5

Noise – Loop Area Signal

A step-by-step description of troubleshooting a noise problem in a competition car. Loop area noise is described and solutions presented.

A2505

Testing for Power Supply Isolation
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Noise – Practical tests for component problems

This article explains how some components are prone to noise due to poor power supply isolation. A method of quickly checking for isolation is prented.

A2608

AM Noise
$3.5

Noise - RFI

A look into how a car audio amplifier can cause problems with AM reception.

A2558

Innovative Produce of the Show
$3.5

Noise – Shielding

The differences between electromagnetic, magnetic, and electrostatic shielding are presented. Shield effectiveness is considered. Real life car audio situations are discussed.

A2484

Ground Loop Isolators
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Noise – Signal Path Related

Premier article on how using a typical ground loop isolator (1:1 isolation transformer) can increase noise in a system. Solutions are presented. Photographs, schematics and drawings included.

A2472

How Complicated Can It Get
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Noise – System Design

How power supply and charging noise can get into a car audio system. How to design a system for minimal noise.

A2476

If You Have To Ask
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Noise – The end of Coaxial Cables in Car Audio

This article predicts the end of coaxial signal cables in car audio systems. The noise benefits of using twisted pair signal cables are stressed.

A2436

Turn Right and Hit the Brakes
$3.5

Noise -- Troubleshooting

The basic steps to troubleshooting a car audio problem are detailed in a practical example.

A2508

The Gods of Car Audio
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Noise – Troubleshooting

This article discusses in-line noise filters, ground loop isolators, and a method of substituting “known good” components to solve the noise problem.

A2477

Inductive Noise Update
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Noise – Twisted Pair cables vs. Other Cable Types

This article describes the use of home-made twisted pair signal cables. Since there were no manufactured twisted pair cables, some savvy installers made their own. Test results are presented.