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Diffraction and its effects . . Effects Pedals, Units & Accessories
Old 8th September 2011
Gear Head
jimdgoulding's Avatar

Diffraction and its effects . .

is something I've made a study of and custom make an affordable after market product for its removal. For those of you who don't know, diffraction is the reflection of waveforms shorter in length than the width of your speaker cabinets or those produced by your tweeters. This is not something owners of Gallo speakers, for example, or any baffleless speaker to include planars, need be concerned with. It is for the owners of box speakers with right or near right angles. Diffraction in action:

Those green and red circles in the illustration by Al Ludwig are not a part of any recording that you own and are additive in your frequency and time domains. They are late arriving, out of time and phase. Some speaker manufacturers, not very many, compensate for a rise in the frequency domain caused by diffracted waveforms summing in by reducing the tweeters output just above of the crossover, but the time and phase anomaly persists to the detriment of the clarity and dimensionality inherent in good recordings.

I use organic wool and individually fit to the dimensions of most any speaker baffle and offer with a 30 day trial period. You should give it a try. You just might find that it is the best value audio investment you've ever made.

Some user and reviewer comments can be seen on the back page at my website:

Thank you and see you in the forums .
Old 23rd September 2011
Gear Nut
magnuspater's Avatar

What's the name of the song in the quotes & pics page?

Page Title
Old 25th September 2011
Gear Head
jimdgoulding's Avatar

Originally Posted by magnuspater View Post
What's the name of the song in the quotes & pics page?

Page Title
Hi, Magnus, it's from a Todd Gustavsen Trio album on ECM, Being There.
Old 11th November 2011
Gear Head
jimdgoulding's Avatar

A wee bump for the prosperity of your end game, what your system is working to deliver.
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