Plastic ring over tweeter opinion

Removing the grill is often a good idea. (But it varies, so you need to try it both ways.) But snipping off the tweeter's wave guide? Giving advice like that goes beyond stupid, to the borders of venal.

This is the same outfit that sells $24 Iso-nad cork blocks that may be procured at your local HVAC dealer for $4-5. Of course, Myrtleshat 'specially' tunes them. Some believe their recordings have not quite achieved near-mythical status as proclaimed on their catalog cover. But audiophile opinions are like ashholes, everybody got one.

BTW, tweeter diffusers are a good thing and an integral part of the driver design. Even the speaker manufacturer doesn't remove them! Then again, Pierre Is a former rocket scientist...

I wonder how they determined it was "as much as 100%"

Perhaps they have a special tweeter meter.

This sounds like a very, very bad idea to me.

Check out my archived thread on this topic and more such proclamations from Mapleshade...

You lost me at "as much as a 100% improvement in treble". Now how exactly did they quantify this benefit? What is this supposed to sound like? Also what is a plastic phase ring? I've seen some tweeters that have a plastic strip or series of strips which may help prevent damage but that wouldn't effect the phase of the driver. Smells like BS to me.