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Back to Basics Audio - Julian Nathan

Back to Basics Audio

Paperback Published: 1st September 1998
ISBN: 9780750699679
Number Of Pages: 344

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Back to Basics Audio is a thorough, yet approachable handbook on audio electronics theory and equipment. The first part of the book discusses electrical and audio principles. Those principles form a basis for understanding the operation of equipment and systems, covered in the second section. Finally, the author addresses planning and installation of a home audio system.


Julian Nathan joined the audio service and manufacturing industry in 1954 and moved into motion picture engineering and production in 1960.
He installed and operated recording theaters in Sydney, Australia,
and set up similar facilities in Papua New Guinea and Hong Kong. Later he spent several years in cinema installation and service including audio visual theaters and government sound systems, then worked in the hi-fi- and professional sound equipment markets. His particular interest is home theater. He makes his home in New South Wales, Australia.
Notes on home theater systems, speaker placement and calibration
System planning, diagram analysis, and signal processing
Easy introduction to practical audio, acoustics, and electrical theory

'A practical and very accessible handbook on basic audio theory and practice, written not only for technicians but also for sales people and amateur enthusiasts who 'want to go into things seriously.'...It's all written and presented in a friendly way, with a bare minimum of maths and a lot of good down-to-earth practical advice. My impression is that it would be an excellent introduction to basic audio theory and practice, for anyone wanting to get into this area.' - Electronics Australia

"Back To Basics Audio is a thorough, yet approachable handbook on audio electronics theory and equipment."
- Front of House, March 2005

Introductionp. xiii
Electrical Principlesp. 1
Audio's Three Partsp. 1
Electronics and Electricityp. 1
An Electrical Circuitp. 2
Electrical Principlesp. 3
Ohm's Lawp. 4
Using Ohm's Lawp. 4
Voltage Dropp. 5
Introduction to Measurementsp. 6
Inductance, Capacitance, and Impedancep. 7
Resonancep. 8
Line Impedancep. 9
Magnetism and Speaker Driversp. 10
Speakers and Electric Motorsp. 11
The Inverse Square Law and Speaker Designp. 12
Bi-Polarityp. 13
Direct and Alternating Currentp. 13
Graphical Representation of Waveformsp. 14
Meters and Electrical Measurementsp. 17
Multimetersp. 17
Voltage Measurementp. 18
Current Measurementp. 19
A Word of Warning about Meter Current Rangesp. 21
Resistance Measurementp. 21
Using Analog and Digital Multimetersp. 22
Accuracy of a Meterp. 22
Meter Sensitivityp. 25
Additional Features Available in Multimetersp. 26
Oscilloscopesp. 26
Oscilloscope Experimentsp. 28
Amplifiers and Transmission Linesp. 29
Power Amplifier Lines and Loadsp. 29
The Input Circuitp. 30
The Output Circuitp. 31
Avoidable Failuresp. 32
Speaker Impedance Matchingp. 33
Constant Voltage Linesp. 34
RMS Voltage and Currentp. 36
Powerp. 38
Amplifier Output Power Measurementp. 39
DC Offset Voltagep. 41
Catastrophic Failuresp. 43
Dummy Loadsp. 44
Cascading Power Amplifiersp. 45
Line Amplifiersp. 46
Voltage Amplifiersp. 47
Audio Linesp. 48
Coaxial Transmission Linesp. 49
Hearing-Aid Induction Loopsp. 50
DC Coupled Amplifiersp. 51
Sound Waves and Decibelsp. 53
The Audio and Electromagnetic Spectrap. 53
The 630 Hz Toolp. 54
Frequency and Wavelengthp. 57
Propagationp. 57
Audio Measurementsp. 58
Noise and Distortion Thresholdsp. 60
Decibels and Powerp. 63
Decibels Further Explainedp. 65
Case Historiesp. 68
Shutting the door after the horse has boltedp. 68
Hazards of arbitrarily adding an insert pointp. 69
Transfer Characteristic and Networksp. 75
Transfer Characteristic and Distortionp. 75
Electro-Mechanical and Acoustic Transferp. 80
Preparing for Unavoidable Transfer Errorsp. 81
Networksp. 81
Attenuatorsp. 83
Variable Attenuatorsp. 84
Loss Padsp. 85
Filters and Equalizersp. 86
Resistances in Series and Parallelp. 92
When to Use a Fixed Equalizerp. 92
Cautions Regarding Equalizer Usep. 93
Recovery Amplifiersp. 94
Active Crossovers and Speaker Processorsp. 95
Speakersp. 99
Speaker Power Ratingsp. 99
Estimating the Power to a Speakerp. 101
IEC Speaker Power Ratingp. 101
Directional Properties and Stereo Imagep. 102
Stereo Surroundp. 103
Poor Man's Surroundp. 104
Using Speaker Directional Propertiesp. 105
Frequency Response of Speakersp. 108
Response Limits of Speakersp. 109
Standing Wavesp. 111
Efficient Bass Speaker Placementp. 111
Speaker Bafflesp. 112
Bass Box Designp. 113
Intermodulation Distortionp. 115
Phase Response of Speakersp. 116
Speaker and Driver Phasingp. 116
Speaker Efficiencyp. 118
Theater Speaker Evolutionp. 119
Importance of Theater Speaker Dispersion Anglep. 121
Recent Developmentsp. 122
Cinema High-Frequency Roll-Offp. 123
Auditorium Response Limitationsp. 125
Monitor Speakersp. 126
Limited Monitorsp. 127
Auditorium and Monitor Calibrationp. 127
Speaker Response Measurementsp. 132
Auditorium and Monitor Levelsp. 134
Why Do Commercials Sound Louder?p. 135
Headphonesp. 136
Tape Recorders and Monitor Selectorsp. 137
Magnetic Recordersp. 138
Recorder Features and Typesp. 141
Simplifying Complicated Conceptsp. 142
General Purpose Monitor Selectorsp. 144
Introduction to Studio Monitor Selectorsp. 148
Monitor Selectors for Studio Mixersp. 149
Drop-Edits and Insert Recordersp. 151
Zero Level and Line Levelp. 152
Recorder Line-Up Tonep. 153
Tape Recorder Alignmentp. 153
Mixersp. 157
Introduction to Mixersp. 157
The Difference between Speech and Dialogp. 160
Dialog Processingp. 161
Dialog Equalizer/Compressor Combinationp. 163
Where Not to Use Dialog Processingp. 166
Background Suppressionp. 167
Bandpass Filtersp. 168
Dip Filtersp. 172
Points to Consider when Mixingp. 172
The Effects Channelsp. 173
Digital Sound Processing and Equipmentp. 175
Unlocking the Noise Gatep. 176
Acousticsp. 179
Rooms and Acousticsp. 179
Reverberation and the Absorption Spectrump. 179
Sound Isolation and Acousticsp. 180
Equalizing the Absorption Frequency Responsep. 181
Acoustic Control by Diffusers and Resonatorsp. 181
Sound Isolation Constructionp. 186
Overcoming Building Noisesp. 190
Planning and Supervising a Building Projectp. 193
Silencing a Generatorp. 194
Audio Cablingp. 197
Balanced and Unbalanced Linesp. 197
Short Run Audio Wiringp. 200
Long Balanced and Unbalanced Linesp. 200
Reducing Noise Interference at Sourcep. 204
Safetyp. 205
Connections to Various Types of Equipmentp. 206
Cable Segregation and Rack Terminationp. 208
There-and-Back Cable Terminationp. 208
Pre-Measured Cable Runs and Junction Boxesp. 210
Prefabricated Cable Loomsp. 210
Keeping RF Out of Systems and Cablesp. 211
Transformers and Power Suppliesp. 215
Transformersp. 215
Auto-Transformersp. 220
Making Auto-Transformers to Orderp. 221
Transformer Frequency Responsep. 221
The Electricity Supply Mainsp. 222
Rectifiers and Power Suppliesp. 223
Regulatorsp. 226
Voltage and Current Regulationp. 227
Zener Diodesp. 228
Regulator Noisep. 228
Switch-Mode Power Suppliesp. 229
Three Dollar Testerp. 229
Power Supply Faultsp. 230
Batteries and Chargersp. 231
Lead-Acid Batteriesp. 232
Precautions with Acid Batteriesp. 233
Nickel-Cadmium Batteriesp. 234
Choice of Batteryp. 235
Control Systemsp. 237
Basic Control Groupsp. 237
Relaysp. 238
Relay Timer Circuitsp. 241
Motor Reversingp. 242
Solid State Control Devisesp. 243
Relays Versus Electronic Controlp. 245
Solder and Assembly Methodsp. 247
Solderingp. 247
Toolsp. 247
Soldering Techniquesp. 248
Using Additional Fluxp. 252
Troubleshooting, Inspection, and Re-Solderingp. 253
When Not to Re-Solderp. 254
Choosing and Fitting Connectorsp. 254
Solderless and Crimp Connectorsp. 257
Wire Wrapp. 258
Installation Planningp. 259
Diagramsp. 259
How Far to Go with Drawing Detailp. 264
Drawing a System Block Diagramp. 264
Patchbay Layout and Wiringp. 268
Racks and Panelsp. 270
Examples of Standard and Special Racksp. 276
Communicating Ideasp. 276
Front Opening Racksp. 282
Panel Designp. 282
Control Groupingp. 284
Laying Out a Panelp. 287
Lettering, Styling, and Engravingp. 287
Scales for Potentiometers and Switchesp. 288
Before Starting Work on a Panelp. 289
Materials and Panel Thicknessp. 290
Panels for Membrane Switchesp. 291
Brackets and Shelf Units for Mobile Equipmentp. 292
Drilling Precision Holes in Metal and Plasticp. 294
Home Theater Soundp. 297
Real Theater Sound at Homep. 299
Surround Speaker Positionp. 300
Equalizing the Center Channelp. 301
Case Historyp. 302
Bass and treble OK, but sound is badp. 302
Adding a Sub-Bassp. 304
Bass Distortion and Power Lossp. 306
Maintaining Program Dynamic Rangep. 307
Working with Formulae - Practical Examples of Common Calculationsp. 309
Calculating Voltage Drop Resistancep. 309
Calculating Amplifier Output Powerp. 310
Calculating LED Resistor Valuesp. 310
Calculating AC Transformer Secondary Voltage for a Given DC Rectifier Outputp. 311
Diagram Symbolsp. 313
A Mechanical Design Exercisep. 321
Making a High Gain Video Projection Screenp. 321
Consequential Design Stepsp. 324
Estimating Power to Speakersp. 327
How Much Power is Going to the Speakers?p. 328
Field Assessment of Power to a Speakerp. 328
Glossary
Indexp. 331
Table of Contents provided by Syndetics. All Rights Reserved.

ISBN: 9780750699679
ISBN-10: 0750699671
Audience: General
Format: Paperback
Language: English
Number Of Pages: 344
Published: 1st September 1998
Country of Publication: US
Dimensions (cm): 23.37 x 15.24  x 1.85
Weight (kg): 0.49