Engineering Notes
Engineering Notes are useful resources to enhance or refresh knowledge, covering a broad spectrum of subjects they are available to download, as required.
Index to Engineering Notes
Measuring Noise Voltages
Measuring Sensitivity of a Loudspeaker
Matched Microphone Attenuator
Methods of Measurement V1
Fuses for Mains Circuits
Methods of Measurement V2
Insulation Resistance
100V Line Dummy Load
Optimising Overall Efficiency
Installation Instructions
Loudspeakers, impedance and power
'Power' tappings on 100 V line transformers
'Earthing' of loudspeakers
Fire alarm monitoring techniques
CE-marking terms
Rectifier filter capacitors
Measuring Thiele-Small parameters of a loudspeaker
Balanced circuits and differential amplifiers
Optimum number of turns for an AFILS loop
Supply current requirements for a PA/VA installation
Measuring AFILS with pink noise
Capacitors in series with loudspeakers
New AFILS standard – how strong is your magnetic field?
Sound System Test, Alignment, and Certification – Part 1
Sound System Test, Alignment, and Certification – Part 2
Sound System Test, Alignment, and Certification – Part 3
Automatic gain control, limiting and compression
Finding the earth fault on an induction loop
Analogue or Digital?
The dynamic range of a microphone
Where did the wind blow my sound?
Don't put a sock in it!
Free and low-cost software
Calculating loudspeaker line losses using LTspice and MiscEl
Coverage angle and coverage area of a ceiling loudspeaker
Headphone 'peakers'
Where do I put my induction loop?
AFILS and the 'ideal rabbit'
What about Skin Effect?
A method of measuring speaker load impedance without an impedance meter
Two ways of looking into things
USB C Technical Note
