Tweeter Diffraction

[Stratmangler]

Noting posts made on the Trade section of the forum, I was intrigued by the idea of tweeter/baffle interaction (tweeter diffraction).

Today I spotted self adhesive felt on sale at Tesco - I bought a couple of packs (@ £2.00 a pack - the stuff is sold as furniture feet).

Having cut the larger pieces of felt to size and fitted them around my HF drivers, and noting a major difference (note difference, not improvement), I decided to remove the large felt pieces from my speaker baffles and apply some of the multitude of dots in the felt packs.

I like what I'm hearing so far - longer term listening will prove whether or not I persist with this line of experimentation.

I'll do photos if there is a demand.

All I suggest is give it a go.

Chris

[Filterlab]

Definitely try Jim's product out, I did and it transformed my system (note: improvement not just difference ) so I can thoroughly recommend it. It costs pennies too.

[Alan]

Ditto Rob, improvement not difference. Other people have had varying degrees of success with this line of tweakery, it is speaker dependant. I would recommend Jim's surrounds as he has put in a large degree of R&D & has received tons of feedback. It is cheap, and there is a money back trial period. Try them compared to your efforts - it would be interesting to see how they match up and I for one would be interested in your thoughts.

[The Grand Wazoo]

From the Grave

I thought some folks might be interested to hear how Chris got on with these pads - did he keep them on?
Has anyone else tried something similar?

[andreime]

I have a felt-type ring around my tweeters. I like the sound with it on.
Also have another set of speaker with the baffle covered with leather - slight differences before and after the leather.

In speaker building the baffle design is one of the most important aspects. This includes driver placement, depth of each unit and even the material the baffle is covered with. All this impact on the final sound and can give measurable results.
Also, you can try with something less dense similar to velvet with double sided tape - choose one that comes off easy

[YNWaN]

Many years ago I tried foam around my tweeters and preferred it. A few years later I changed it to a slightly thinner, grey, version (about 8mm) that also goes around the mid/bass driver (it's held on with double sided tape) - this definitely makes a worthwhile improvement.

I didn't buy these solutions though - I made them myself.

[John]

I used this in past with standard speakers and made a difference to long term but not look great Do not need them with speaker design I have now

[MartinT]

I used these Focus Rings on my previous JM Lab Mezzo Utopia speakers and it made a useful improvement to treble quality, purity and soundstage.

http://www.russandrews.com/product.a...CVCKNYNWOQNYJF

[Puffin]

Noting posts made on the Trade section of the forum, I was intrigued by the idea of tweeter/baffle interaction (tweeter diffraction).

Today I spotted self adhesive felt on sale at Tesco - I bought a couple of packs (@ £2.00 a pack - the stuff is sold as furniture feet).

Having cut the larger pieces of felt to size and fitted them around my HF drivers, and noting a major difference (note difference, not improvement), I decided to remove the large felt pieces from my speaker baffles and apply some of the multitude of dots in the felt packs.

I like what I'm hearing so far - longer term listening will prove whether or not I persist with this line of experimentation.

I'll do photos if there is a demand.

All I suggest is give it a go.

Chris

Have you got a link to the article in Trade.

[Stratmangler]

From the Grave

I thought some folks might be interested to hear how Chris got on with these pads - did he keep them on?
Has anyone else tried something similar?

No, eventually the pads were removed.
The pads had a definite effect on sound dispersal, but after a couple of weeks I decided to remove them.
And I didn't miss their effect, so they stayed off.