Douglas Self told us he was preparing a new book but who knew the subject ? So here it is, I didn't see it
announced yet :
Amazon.com: The Design of Active Crossovers (9780240817385): Douglas Self: Books
As Ihan said for Bob Cordell's book the first of august, I think we will be many looking forward it.
announced yet :
Amazon.com: The Design of Active Crossovers (9780240817385): Douglas Self: Books
As Ihan said for Bob Cordell's book the first of august, I think we will be many looking forward it.
This subject could be summed up in 10+ pages. I really do not think I need this book. If you are a little skilled, Linkwitz's webpage have all the information you need. And then some.
I bet I'll read something new to me.
This subject could be summed up in 10+ pages.
I'd like to see you try it.
You might like to know that the Table of Contents for the Crossover book can now be seen on my website at:
The Design of Active Crossovers by Douglas Self
It is being discussed in another diyAudio thread at:
http://www.diyaudio.com/forums/mult...ssovers-douglas-self-wants-your-opinions.html
If having looked at the Toc you feel there is anything missing, please let me know.
The Design of Active Crossovers by Douglas Self
It is being discussed in another diyAudio thread at:
http://www.diyaudio.com/forums/mult...ssovers-douglas-self-wants-your-opinions.html
If having looked at the Toc you feel there is anything missing, please let me know.
Another edition ?
I see Amazon mention a newer version of " The design of active crossovers" but not yet released. Higher priced at about $90 !
Whats new in this book that makes it so much more expensive than the older book ? Is this the price of the hard bound version or the paper back version ?
I see Amazon mention a newer version of " The design of active crossovers" but not yet released. Higher priced at about $90 !
Whats new in this book that makes it so much more expensive than the older book ? Is this the price of the hard bound version or the paper back version ?
The new Second Edition is a considerable expansion. It should be on the streets by about April 2018.
This is what I've written to go on the back cover of the new Second Edition:
The new material includes
● A much, much, broader palette of ready-made filter designs for crossover construction, including single-stage 4th-order Linkwitz-Riley filters, which make it possible to build a 2-way 4th-order active crossover with one dual opamp. (that’s just one stereo channel, obviously) Other additions are many new ways to make 4th and 5th-order filters, new 5th and 6th-order highpass filters, and more advanced filters such as the Tow-Thomas biquad, which allow greater precision in defining the response.
● More on notch filters, especially full design details and procedures for the extremely flexible and useful Bainter notch filter.
● Economical ways of making high-order bandwidth-definition filters.
● A big new chapter on distortion and noise in active filters, covering Sallen & Key, multiple-feedback, and Tow-Thomas filters.
● More on equalisation circuitry, including filter slopes of -3 dB and -4.5 dB/octave.
● More on different loudspeaker types and their specific crossover requirements. New stuff on speaker non-linearity and Doppler distortion, and sound absorption in air.
● A new section on MTM (d’Appolito) Tweeter-Mid configurations
● A full explanation of vertical line arrays of loudspeakers, including J-arrays and amplitude and frequency tapering.
● A whole new chapter on motional feedback loudspeakers and interfacing them with active crossovers.
● Instrumentation amplifiers as low-noise balanced inputs. They have long been praised for having superb common-mode rejection, but this has been hard to exploit in audio applications. I demonstrate how to do it, and get lower noise at the same time. Also, what I modestly call the Self variable-gain balanced input, which gives excellent channel balance on stereo inputs without using expensive parts.
● Much more on the ingenious but little-known technology of ground-cancelling outputs, showing how they can give a noise advantage over conventional balanced interconnections. Cunning ways of substantially reducing line output transformer distortion at near-zero cost are described.
● New material on achieving awkward resistor and capacitor values.
This is what I've written to go on the back cover of the new Second Edition:
The new material includes
● A much, much, broader palette of ready-made filter designs for crossover construction, including single-stage 4th-order Linkwitz-Riley filters, which make it possible to build a 2-way 4th-order active crossover with one dual opamp. (that’s just one stereo channel, obviously) Other additions are many new ways to make 4th and 5th-order filters, new 5th and 6th-order highpass filters, and more advanced filters such as the Tow-Thomas biquad, which allow greater precision in defining the response.
● More on notch filters, especially full design details and procedures for the extremely flexible and useful Bainter notch filter.
● Economical ways of making high-order bandwidth-definition filters.
● A big new chapter on distortion and noise in active filters, covering Sallen & Key, multiple-feedback, and Tow-Thomas filters.
● More on equalisation circuitry, including filter slopes of -3 dB and -4.5 dB/octave.
● More on different loudspeaker types and their specific crossover requirements. New stuff on speaker non-linearity and Doppler distortion, and sound absorption in air.
● A new section on MTM (d’Appolito) Tweeter-Mid configurations
● A full explanation of vertical line arrays of loudspeakers, including J-arrays and amplitude and frequency tapering.
● A whole new chapter on motional feedback loudspeakers and interfacing them with active crossovers.
● Instrumentation amplifiers as low-noise balanced inputs. They have long been praised for having superb common-mode rejection, but this has been hard to exploit in audio applications. I demonstrate how to do it, and get lower noise at the same time. Also, what I modestly call the Self variable-gain balanced input, which gives excellent channel balance on stereo inputs without using expensive parts.
● Much more on the ingenious but little-known technology of ground-cancelling outputs, showing how they can give a noise advantage over conventional balanced interconnections. Cunning ways of substantially reducing line output transformer distortion at near-zero cost are described.
● New material on achieving awkward resistor and capacitor values.
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Looks interesting. I'll book a copy ! I hope it's a paperback . Don't like to pay extra for hard bound copies.
I believe it will be available in paperback, hard back, and electronic formats.
Amazon US:
Paperback: 672 pages
ISBN-10: 1138733032
Shipping Weight: 1.1 pounds
$90
Hardcover: 672 pages
ISBN-10: 1138733024
Shipping Weight: 1.7 pounds
$190
Late April (you can pre-order now).
eBook not listed yet, but unless Doug objects, Amazon is sure to want to eBook it.
Paperback: 672 pages
ISBN-10: 1138733032
Shipping Weight: 1.1 pounds
$90
Hardcover: 672 pages
ISBN-10: 1138733024
Shipping Weight: 1.7 pounds
$190
Late April (you can pre-order now).
eBook not listed yet, but unless Doug objects, Amazon is sure to want to eBook it.
Attachments
I just ordered the second edition, available on the 16th of April :
The Design of Active Crossovers: Douglas Self: 9781138733039: Amazon.com: Books
I should receive it around the 6th of May.
The Design of Active Crossovers: Douglas Self: 9781138733039: Amazon.com: Books
I should receive it around the 6th of May.
I'd like to see you try it.
There's a challenge...
wrt the sections on Instrumentation amps and Ground Cancelling outputs: Do the sections go beyonfd the sections in the "Small Signal" book ? ( I have that ).
Cheers.
●
Instrumentation amplifiers as low-noise balanced inputs. They have long been praised for having superb common-mode rejection, but this has been hard to exploit in audio applications. I demonstrate how to do it, and get lower noise at the same time. Also, what I modestly call the Self variable-gain balanced input, which gives excellent channel balance on stereo inputs without using expensive parts.
● Much more on the ingenious but little-known technology of ground-cancelling outputs, showing how they can give a noise advantage over conventional balanced interconnections. Cunning ways of substantially reducing line output transformer distortion at near-zero cost are described.
Cheers.
●
Instrumentation amplifiers as low-noise balanced inputs. They have long been praised for having superb common-mode rejection, but this has been hard to exploit in audio applications. I demonstrate how to do it, and get lower noise at the same time. Also, what I modestly call the Self variable-gain balanced input, which gives excellent channel balance on stereo inputs without using expensive parts.
● Much more on the ingenious but little-known technology of ground-cancelling outputs, showing how they can give a noise advantage over conventional balanced interconnections. Cunning ways of substantially reducing line output transformer distortion at near-zero cost are described.
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