[Mass. Wine Guy]

I read about these and they appear to be a cheap upgrade, but only if they work. Has anyone tried them?

[Tone Depth]

What felt pads?

[Don_S]

Is Mass. an abbreviation for "massive quantities"?    A critical piece of information is missing from your post.   

I read about these and they appear to be a cheap upgrade, but only if they work. Has anyone tried them?

[eclein]

The invisible ones you have pictured???

[Mass. Wine Guy]

Oh right. A link would help:

http://www.diffractionbegone.com/newblankcontact.html

[Jim N.]

Quite a few AC'ers have tried them since they are made by Jim Goudling, a member here. Great service, great price and they work for me on my Loreleis.

[Wind Chaser]

One of the best, inexpensive tweaks.  Apart from ground loops, there isn't anything that will make such a difference / improvement for the money.  Highly recommended!

[dangerbird]

One of the best, inexpensive tweaks.  Apart from ground loops, there isn't anything that will make such a difference / improvement for the money.  Highly recommended!

+1--Jim is very meticulous and very customer friendly

[Letitroll98]

I haven't used Jim's products, but I've been putting felt padding around my tweeters since the seventies.  So I endorse the use of heavy felt padding as an anti diffraction measure.

[Mass. Wine Guy]

Sounds very fine. Do you have to use the pads with speakers grilles off?

[SlushPuppy]

Sounds very fine. Do you have to use the pads with speakers grilles off?

Unless the manufacturer specifically states that the speaker was voiced with the grilles on, for critical listening it's best to leave them off. This product should make a positive difference either way, but I'm sure Jim could provide you with the best answer.

[jimdgoulding]

Unless the manufacturer specifically states that the speaker was voiced with the grilles on, for critical listening it's best to leave them off. This product should make a positive difference either way, but I'm sure Jim could provide you with the best answer.

Wine Guy-  Hi.  I recommend that you do for critical listening tho I have fitted for listeners who prefer to return their grills.  Feel free to send me an email with your type speakers and I can be more specific.  Cheers.