Harbeth P3ESR metal tweeter


I am reading that the metal tweeter on the P3ESR can sizzle if someone has even slightly sensitive ears to brightness. Would the Luxman L-505U integrated tame this tweeter? thanks 
blackhawkskid6
One can only find the P3ESR to sound too smooth in the treble, in other words lacking in sparkle and excitement, or the sound is just right. It won’t sound bright even if you use the brightest sounding amp or cables on the P3ESR or any Harbeth for that matter.
Thanks for the interest and replies.

The room is approximately 15' x 12'

Tellurium Q black cables (bananas)  swapped out occasionally with LAT International (spades). No clue on what criteria to look for to create synergy. 
My P3ESRs are really easy to listen to. I've never found them bright or harsh, but they do offer a lot of detail. I have mine in kind of a near field setup in my computer room. I'm many ways, they are my favorite speakers. They're also the least expensive speakers I own. They shouldn't need any "taming".
They are easy to drive.They will play as loudly as you'd like with 50-60 watts.They won't have excess sibilance unless your speaker cables are a bad match.
I think any 50 watt amp is sufficient. They have a low sensitivity rating but they are easy to drive. What size room do you have?
I have read this in a number of different forums (Agon, AK, even the slanted HUG forum mentions degrees of sibilance). Thanks for letting me know that you have not experienced this. Do they require a large amount of power or are they easy to drive? thanks
Where did you read that? I’ve owned a few Harbeths and I have never found the P3 to sizzle. As a matter of fact I like the P3s better than the other Harbeths that I have owned!!