Acoustics 201 : Loudspeaker measurements
Original price was: $99.99.$17.99Current price is: $17.99.
What you’ll learn
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Measure frequency response of a speaker or sound system.
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Make distortion measurements.
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Measure impedance and create impedance plots.
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Measure the Thiele / Small parameters of a speaker driver.
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Create FRD and ZMA files for crossover design applications.
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How to make anechoic frequency response measurements in your own room.
Learn how to measure frequency response
The first thing you will learn from this course is to measure the frequency response of a certain speaker driver, loudspeaker or sound system. The difficult part is to get an anechoic response without an anechoic chamber. Using different measuring techniques and with the help of intuitive software, you will learn how to measure the full frequency bandwidth anechoically in your own living room. This will help you set up your audio system using measured data, or it can be used to design crossovers for your particular DIY loudspeaker.
A little bit of electrical engineering
A sound system is a combination of both acoustical and electrical parts. You will also learn how to measure impedance and create impedance plots. Measure different electrical components like capacitors, inductors and resistors. Also, if you have an unknown speaker driver you will learn how to measure the Thiele / Small parameters without much fuss.
Dip your feet into crossover design
While this course will not teach you how to design a crossover, it will show you how to create FRD and ZMA files. These are frequency response and impedance files which are used in crossover design apps. At the end of the course I will show you how to load these files into such program, and tryout different circuits and see how adding crossover components behave. A comprehensive course about crossovers will be released in the near future.
Do I need certain equipment?
Yes, you will need 2 core pieces of gear :
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A measurement microphone (like miniDSP UMIK-1).
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A device for measuring impedance (like Dayton Audio DATS v2 (recently released v3 as of 2020).
These are roughly 100$ each, but you will get a more comprehensive list of the equipment needed inside the course. With alternatives that you can buy, or more cheaper options. Also, some accessories that will make your life easier are included in the list.
Software option
For the different acoustical measurements we are going to use Room EQ Wizard (or REW). This is a free to use software. Usually, acoustics software are quite expensive and difficult to follow. However, REW is free and quite intuitive to use. Pretty much a complete package. It only misses one function, which I consider important. Don’t worry, we’re are not going to step up to those complicated application. I devised an Excel spreadsheet which handles this shortcoming. You will find the spreadsheet inside the course.
Nov 2018 Update – Added English subtitles.
June 2019 Update – Corrected a measurement error for the 3-way speaker and added more info to that section
Jan 2020 Update – Update the equipment list
Who this course is for:
- Audiophiles who want to learn more about sound and speaker systems.
- DIY-ers who want to build their own loudspeakers.
- People who want to set up their audio gear using measurements.
- People who want to set the foundation for learning how to design a crossover.
12 reviews for Acoustics 201 : Loudspeaker measurements
Add a review
Original price was: $99.99.$17.99Current price is: $17.99.
Stefan Ertel –
An sich ein gutes tutorial. Die Phase hätte ich aber über die TimingReference ermittelt was die Anpassungen in X-Sim erspart. Damit hätte man auch das AcousticalCenter ermitteln können.
William G Hoffman –
Clearly walks through all the steps needed to measure speakers and how to get the data into Xsim.
Gerson Anthony Cedeno –
Yes, it was a good match for my level of understanding. Looking forward to the next lessons. The instructor explains every detail of the subject at hand and is extremely knowledgeable in this area.
Rafael Sanchez –
A very good explanation, with useful tips
Milan Baburaj –
Excellent course, In a couple of days I can start building and testing…If I would have start reading books it would take years to even understand the entire concept. By the time, the softwares would have upgraded with another learning Curve.
Mohammed Wasif –
Feels like treasure that I’ve been hunting since a very long time. Now I got the know-how to measure an after market speaker with no specs. 😉
Hope the procedure is same to do the off axis responses as well !
Pedro Oliveira –
Well explained and easy comprehension!
T Duraiselvan –
Awesome
Ashley Salmond –
as I am just looking for the first time,its a bit hard to tell. i thought some of the inputs may have be alittle vague, but still understand able
Gaurav Malvai –
Great course
Robert Cook –
Very clear instruction so far. Like the pace.
Mikołaj Grząślewicz –
Very practical. Now I know I did my previous measurements completely wrong..