Index

Find the post you are interested in, by browsing through this index :

Enclosure design

1. Enclosure types
2. Sealed enclosure
   1. How to build a sealed subwoofer box
   2. How to design a sealed subwoofer box using the excel spreadsheet
   3. Sealed vs Bass Reflex
3. Bass reflex
   1. Bass reflex alignments
4. Transmission line
   1. DIY Transmission line subwoofer
5. 4th order bandpass
6. 6th order bandpass
7. Folded horn
8. Passive radiator
   1. How to tune a passive radiator
9. Isobaric design
   1. Isobaric examples
10. 2 way bookshelf speaker build guide
11. Port air velocity calculator
12. Magnetic speaker grill build
13. Hornresp Tutorial – How to design a transmission line

Audio / Electrical measurements

1. Measure speaker frequency response
2. Quasi anechoic loudspeaker measurements Part 1
3. Quasi anechoic loudspeaker measurements Part 2
4. SPL measurement far-field using Soundeasy
5. Near field speaker measurement using SoundEasy
6. Full range loudspeaker frequency response measurement using SoundEasy
7. SoundEasy impedance measurement
8. Loudspeaker impedance measurement using a multi-meter
9. Measuring Thiele Small parameters part 1
10. Measuring TS parameters part 2
11. T/S parameters measurement using SoundEasy
12. Measure harmonic distortion (THD) using Room EQ Wizard (REW)
13. Step response measurement and explanation
14. Group delay
15. Speaker acoustic center / offset
16. How to measure Thiele Small Parameters using your sound card

Electrical engineering

1. Passive crossovers
2. Passive crossover designs with circuit diagrams
3. Poor man’s passive crossover
4. How to build a passive crossover
5. Speaker electrical characteristics
6. Speaker equivalent circuit
7. Impedance curves explained
8. Impedance equalization circuit / Zobel network
9. Notch filter design
10. Audio peak filter circuit / parallel notch filter
11. Thiele / Small parameters
12. Thiele Small parameters equations
13. 3 way passive crossover using XSim
14. Types of capacitors
15. Types of inductors
16. BMS wiring diagram – 18650 battery pack
17. DIY Bluetooth speaker amplifier – High power 2 x 100W – 8h playtime

Acoustical engineering

1. How to calculate decibels (dB)
2. Total Hardmonic Distortion (THD)
3. Spatial loading
4. Speaker break in
5. Speaker baffle design and diffraction
6. Baffle step calculator – baffle step compensation circuit (BSC)
7. Impulse response
8. Cumulative spectral decay CSD – waterfall plot
9. Speaker lobing and polar response
10. How to create a FRD file
11. How to create a ZMA file
12. Internal standing waves – how to eliminate them

SoundEasy Tutorials

1. SoundEasy probe build
2. SoundEasy measurement box
3. SoundEasy impedance measurement
4. T/S parameters measurement using SoundEasy
5. SPL measurement far-field using Soundeasy
6. Near field speaker measurement using SoundEasy
7. Full range loudspeaker frequency response measurement using SoundEasy
8. Hilbert Bode transform
9. SoundEasy enclsoure design
10. SoundEasy crossover design
11. Ladder delay network

Car Audio

1. OEM enclosure vs custom enclosure
2. Car resonant frequency
3. High output subwoofer enclosure matched to car cabin gain
4. Audison bit ten tuning – time alignment

Reviews

1. Dayton Audio KAB-250v3 review
2. Arylic Up2Stream 2.1 mini amplifier

Builds

1. DIY boombox plans – 2 x 100 watt – 12 hours playtime
2. 3 way floor standing speakers build guide
3. MTM Floor standing speakers
4. High-end portable speaker build