Beryllium Tweeters

You could look for a pair of 2nd hand classic Yamaha NS-2000 speakers which use a Beryllium tweeter. I'm feeding a bit higher up the food chain & own a pair of Magico S5's which employ an excellent Beryllium dome.

I think the beryllium tweeter is nice as I had owned a pair of Paradigm Signature S2's V3 but found them too bright at loud levels. Sometimes harsh sounding. I was even running them with a hybrid tube integrated which smoothened things out a little but still not to my liking. Not for everyone. I switched to custom horns( Casta Acoustics model D8's). Love them. No harshness. Extremely clean, phase coherent, smooth midrange dynamic and fast.

I own Paradigm Signature 8s (v3). Yes ... they can sound bright, but I wonder how much is the fault of the source material. I say this because my new "tweak," a DEQX PreMATE tamed my S8s. They are now more time coherent and room EQ'd. Even still, some source material is "bright'ish" to me. I attribute this more to the source material than the Be tweeters. Presumably, as a result of the DEQX adjustments, my speakers should have a pretty flat FR.

Yamaha M1000

I own a pair of the Signature S6 v2. I never noticed them to be bright until I moved, and got an Emotiva pre to go with the Emotiva amp. It became harsh! I found, after 2 years of experimenting in which I finally started buying used speakers to get an idea of what's out there. I found that Paradigm is much closer to neutral than many others. I also found out that everything matters.

Speaker cable matters a lot at this level of quality, as do interconnects. I got all solid core, and it is much nicer/cleaner than fine strand. The difference here to my speaker cables was immediate and not subtle. It wasn't that I could tell that something was wrong and went on a cable search. I just experimented and discovered how good solid core is.

Same with interconnects. I ended up with solid core copper plated with silver by Morrow Audio. I can recommend without reservation. Imaging like crazy and a 3D soundstage I never knew my music had. My cables are MA3, and the speaker cable is Audioquest Type 4.

The other thing I did was replace the Emotiva entry level crap. Parasound Halo components, designed by the audio legend John Curl. the A21 and the P7 made my sound to the warm side of neutral. The mid range frequencies are amazing, vocals are jaw dropping with well engineered music.

Some people may be sensitive to higher frequencies, and want the highs drastically reduced. Most speakers out there will not work for them. BTW, I am not connected whatsoever to any of the brands I mentioned, they just really work well in my system.