Does anyone know where to obtain any good information on the subject?
Since a lot of people go through lots of trouble to get really low distortion in power amplifiers, why not do the same with the speakers?
Where should I start my search?
/Marcus
Since a lot of people go through lots of trouble to get really low distortion in power amplifiers, why not do the same with the speakers?
Where should I start my search?
/Marcus
Hi,
You must have read my mind...I dunno if you follow Lynn Olson. I do ...he can make something seem so easy.
Anyway Lynn has this thing about DHT triodes having very low intrinsic or inherent distortion. (Without feedback)...before I was never into distortion specs...who cares? I mean j-fets have low distortion but honestly who would use them for creating a musical illusion?
Let's just say Lynn changed my mind on this..and now I've been thinking of speakers....in the same way you have...
Now I have read about line array's or multiple drivers for a given frequency range having very low distortion as well. Because of the amount of drivers. So reading up on line arrays could be handy.
http://www.audiodiycentral.com/resource/pdf/nflawp.pdf
Secondly the distortion in the enclosures that the drivers are mounted is just as important? Here a dipole comes to mind...i.e. no-box, no colouration...(obviously an exageration)
Cheers,
Bas
You must have read my mind...I dunno if you follow Lynn Olson. I do ...he can make something seem so easy.
Anyway Lynn has this thing about DHT triodes having very low intrinsic or inherent distortion. (Without feedback)...before I was never into distortion specs...who cares? I mean j-fets have low distortion but honestly who would use them for creating a musical illusion?
Let's just say Lynn changed my mind on this..and now I've been thinking of speakers....in the same way you have...
Now I have read about line array's or multiple drivers for a given frequency range having very low distortion as well. Because of the amount of drivers. So reading up on line arrays could be handy.
http://www.audiodiycentral.com/resource/pdf/nflawp.pdf
Secondly the distortion in the enclosures that the drivers are mounted is just as important? Here a dipole comes to mind...i.e. no-box, no colouration...(obviously an exageration)
Cheers,
Bas
SL probably has the best treatment of distortion analysis that I've seen so far. He does a pretty exhaustive look at distortion in both woofers and mids when selecting the drivers for the Orion (and Phoenix for that matter)
http://www.linkwitzlab.com
http://www.linkwitzlab.com
If you have access to the Journal of the Audio Engineering Society, a good place to start could be
Mills P.G.L. , Hawksford M.O. Transconductance Power Amplifier System for Current-Driven Loudspeakers. Journal of the Audio Engineering Society,
Vol. 37, 1989, no. 10, p. 809-822
and all the references they quote. Searching this forum for Mills and Hawksford could also give some useful info.
Mills P.G.L. , Hawksford M.O. Transconductance Power Amplifier System for Current-Driven Loudspeakers. Journal of the Audio Engineering Society,
Vol. 37, 1989, no. 10, p. 809-822
and all the references they quote. Searching this forum for Mills and Hawksford could also give some useful info.
Thank you all for the great answers!
I realize that minimizing distortion in speakers will be more expensive than doing so in amplifiers. Or (for the horn-solution) require a bigger living room =)
/Marcus
I realize that minimizing distortion in speakers will be more expensive than doing so in amplifiers. Or (for the horn-solution) require a bigger living room =)
/Marcus
Hi Marcus,
Minimizing distortion does not have to be expensive. On the other hand it need not lead to good sound!? The converse is true as well. Horn's have a lot of distortion...but they sound good apparently...........go figure.
Cheers,
Bas
Bas Horneman said:
Nope, properly designed they have very low THD, IMD and FMD with the IMD esp being much lower than direct radiators.
Manufacturer specs for my compression drivers is <0.5% THD at 114dB.
Hi Brett,
Guess I have read to many "hi-fi" mags in my life..although I stopped around 10 years ago...I must have read a couple of times that horns --ie front loaded horns had massive distortion..!!!!
But I did some reading on the net...
http://www.ossaudio.com/hornbackgrounder.htm
And found out that someone must be lying!😉
Cheers,
Bas
Guess I have read to many "hi-fi" mags in my life..although I stopped around 10 years ago...I must have read a couple of times that horns --ie front loaded horns had massive distortion..!!!!
But I did some reading on the net...
http://www.ossaudio.com/hornbackgrounder.htm
And found out that someone must be lying!😉
Cheers,
Bas
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