jimdgoulding
08-06-2010, 07:12
not to mention harmonic integrity of instruments and voice. I have a commercial interest. So shoot me. The moderators and old guys know this and because of Filterlab's trying what I made for his speakers in the early stages of TAofSF tolerate me. Here is copy of a blog elsewhere to save my time and yours-
"I've been at this for a very long time and listen as much today as ever. I have a very large collection of LP's and compact disc's. Formerly, I listened using Acoustat Model Three electrostatic speakers (and a few others before that) with some SS monoblocks and an ARC tube pre but moving to a much smaller room necessitated my downsizing. I opted for some active Meridian M20's and they work about perfectly in my size room. I still use the same pre and phono stage. I did replace their factory stands to put their tweeters at about ear level. If you don't know, they are MTM configured.
One of the speakers I had owned were Rogers LS3/5a's and I remembered that they used felt around their tweeters. This was to keep waveforms from being redirected by the raised edges of their enclosures. Perhaps you can get an idea about what this would do to the truth contained in your recordings*. Dunlavy did this, too. I began reading about this and decided to apply felt pads around the tweeters of my Meridians. There was a noticable improvement on virtually every recording I played. Images seemed to shape up and where there was depth of field in a recording it became more obvious. Space expanded, in other words, and images appeared more three dimensionally and palpable. The measure of added realism to things was very exciting to me and continues to be. Transients are cleaner and detail finer and things sound more harmonically correct. It's the removal of diffraction effects and their summing in with what we hear that makes this possible.
Diffraction is the reflection of waveforms shorter than the width of speaker enclosures. I have found that it is best to do two things: 1) use a soft and absorbant material so the short and spreading waveforms are absorbed when they make contact**; 2) cover the entire culpable area to capture all of the bandwidth of waveforms shorter in length than the width of a speaker enclosure. An enclosure does not need to have raised edges, right or near right angles do the very same thing.
Very high grade organic wool is the proper material and it needs to be little deep. Synthetic substances or fiber cannot do the job that needs to be done. Inexpensive aftermarket products in the form of rings are nothing more than a bandaid or worse. One supplier's product is made from a cheap bouyant substance. And the only way to take the entire transaction out of the equation requires custom fitting to a specific speaker.
I do that and use a high grade of natural wool in sufficient depth. I fit to any shape of enclosure. There is testimony to the results with a variety of speakers you may read at my site and what I make recieved a Golden Ear Award from REG at TAS in '08. I offer with a money back guarantee if you are not satisfied for any reason.
My site address: www.diffractionbegone.com
Hope you will visit and try this for yourself.
Thank you.
Jim Goulding
*or, as I like to say, what the microphone captured and your system is working in earnest to deliver
**be assured they are, waveforms radiate spherically from conventional drivers"
Me small contribution has improved the listening experience of conventional box speaker owners on all continents whose inhabitants are not penguins, it pleases me to say, but I'm on a mission. Don't be bashful or too self contented. I'll answer any questions here or in a PM. Boy, do I wish I had a barman who would pull me a Fuller's.
"I've been at this for a very long time and listen as much today as ever. I have a very large collection of LP's and compact disc's. Formerly, I listened using Acoustat Model Three electrostatic speakers (and a few others before that) with some SS monoblocks and an ARC tube pre but moving to a much smaller room necessitated my downsizing. I opted for some active Meridian M20's and they work about perfectly in my size room. I still use the same pre and phono stage. I did replace their factory stands to put their tweeters at about ear level. If you don't know, they are MTM configured.
One of the speakers I had owned were Rogers LS3/5a's and I remembered that they used felt around their tweeters. This was to keep waveforms from being redirected by the raised edges of their enclosures. Perhaps you can get an idea about what this would do to the truth contained in your recordings*. Dunlavy did this, too. I began reading about this and decided to apply felt pads around the tweeters of my Meridians. There was a noticable improvement on virtually every recording I played. Images seemed to shape up and where there was depth of field in a recording it became more obvious. Space expanded, in other words, and images appeared more three dimensionally and palpable. The measure of added realism to things was very exciting to me and continues to be. Transients are cleaner and detail finer and things sound more harmonically correct. It's the removal of diffraction effects and their summing in with what we hear that makes this possible.
Diffraction is the reflection of waveforms shorter than the width of speaker enclosures. I have found that it is best to do two things: 1) use a soft and absorbant material so the short and spreading waveforms are absorbed when they make contact**; 2) cover the entire culpable area to capture all of the bandwidth of waveforms shorter in length than the width of a speaker enclosure. An enclosure does not need to have raised edges, right or near right angles do the very same thing.
Very high grade organic wool is the proper material and it needs to be little deep. Synthetic substances or fiber cannot do the job that needs to be done. Inexpensive aftermarket products in the form of rings are nothing more than a bandaid or worse. One supplier's product is made from a cheap bouyant substance. And the only way to take the entire transaction out of the equation requires custom fitting to a specific speaker.
I do that and use a high grade of natural wool in sufficient depth. I fit to any shape of enclosure. There is testimony to the results with a variety of speakers you may read at my site and what I make recieved a Golden Ear Award from REG at TAS in '08. I offer with a money back guarantee if you are not satisfied for any reason.
My site address: www.diffractionbegone.com
Hope you will visit and try this for yourself.
Thank you.
Jim Goulding
*or, as I like to say, what the microphone captured and your system is working in earnest to deliver
**be assured they are, waveforms radiate spherically from conventional drivers"
Me small contribution has improved the listening experience of conventional box speaker owners on all continents whose inhabitants are not penguins, it pleases me to say, but I'm on a mission. Don't be bashful or too self contented. I'll answer any questions here or in a PM. Boy, do I wish I had a barman who would pull me a Fuller's.