I have had a java A45 for a long time now and it's very good on my YAS 62.
These horns are generally considered quite bright (if they are, mine isn't significantly bright). But the Java did fatten and warm up the sound the sound. Not a hint of stuffiness either.
Just so you know where I'm at, it's my 3rd best piece.
I have an RPC90R which increased everthying I said about the A45 but with too much power for my home usage in 2nd place.
A GW NYMC #8 slots right down the middle of those 2 and is therefore my favourite. If you consider this option go a hint wider than normal.
http://tinyurl.com/akx7mh