Diffraction elimination

[Ali Tait]

Jim,do you make any for 5ft. electrostatics?

[jimdgoulding]

Well, I could, but quite obviously, Ali my man, you won't be needing them.

Alan, you are a highly perceptive young man. Thank you and enjoy. I know you will.

[jandl100]

Review the 3rd .....

I've been playing some more with JimG's anti-diffraction baffles. My latest hodgepodge of available parts has the tweeters on my Bowers Active Ones surrounded by the rectangular baffle originally intended to fit around a ribbon tweeter, and a selection of offcuts butchered from baffles intended for a small midrange unit to go around the mid cones (sadly too small for the 6 inch mids on my Actives).

Effective as the tweeter baffle is, I suspect the biggest improvement is from surrounding the midrange cones with anti-diffraction baffle segments.

See pic below for current arrangement.



Hmmmm ..... I'm really not sure I can live without these baffles now. Remove them and the sound seems diffuse, smeared and badly focussed. Damn, but these things work well!

_____

Jim also sent me a set of baffles specifically tailored for the Actives' tweeters, but *shock*horror* they are light-ish grey, rather than the rather fetching black of my original baffles (purchased for my abortive attempt at owning ProAc Future Point Five speakers). Just a no-go aesthetically, for me - I listen with the speaker grilles off and the light grey slabs on the black speaker baffles is just too eye-catching and off-putting. They do sound marginally better than the 'ribbon baffles' though.
Shall I send 'em back to you , Jim?

[Filterlab]

Hmmmm ..... I'm really not sure I can live without these baffles now. Remove them and the sound seems diffuse, smeared and badly focussed. Damn, but these things work well!

I tell you mate, these things are a MUST for everyone using cone driver speakers!

[jimdgoulding]

Jerry- Good news. Better listening through simple science. You are in good company. Dunlavy, Vandersteen, Wilson, Escalante, Green Mountian Audio (fantastic two ways), and going back as far as the Rogers BBC Monitors which I once owned are progenitors of the use of compressed wool felt on the surface adjacent to tweeters. The leading edge and upper end of our midrange is produced by our tweeters and this is how instruments are rendered in sound and image. Minus early refection off our baffles, all will do a better job of this. Space becomes more intelligible, too. My contribution is to make this available as a high quality after market product custom fitted to practically any conventional speaker.

You can help promote my product and theory over at WigWam if you will. All you guys using my product can if you visit that site. I happen to know that Jerry does. You may give your "too grey" surrounds to a friend. Preferably one who contributes to that forum if you have one.

I'm always happy to hear positive feedback. I've had a lot but never tire of it.

Thanks, mate.

[Marco]

I'm glad that Jerry's tried them and 'seen the light', so to speak. I knew Jim's product would work because Rob waxed lyrical about its benefits and he's not often wrong

Marco.

[jandl100]

OK. I've just put a review thread on the Wam. I only do this for products I really believe in - so you should feel honoured indeed, Jim!

Apart from anything else, I expect quite a lot of flak will be coming my way! Prepare to repel boarders!! - lots of doubting-Thomases who fancy themselves as technical gurus are on the WigWam! Lots of talented/knowledgable folk, too, mind.

[jimdgoulding]

I do feel honored and I thank you. I will register there today. No worries about flak. It's an opportunity to turn water into wine. I think I'm up to it. We'll see, shalt we.

[jandl100]

Careful Jim - you may need to register as a dealer - and that's a £50 a year tarrif. You risk getting banned otherwise. Drop James (Wigwam admin/owner) a PM/email - james@hifiwigwam.com to make sure all is well.

[shane]

Prepare to repel boarders!!

How do you repel Boarders?











Stop changing the bed linen!

(Old Goon Show joke...)