Yamahaluver : <font color='#000000'>Hi,
The poisonous speakers you mention are the berrilyum mid/tweter NS-1000
one of the truest speakers around and I am a proud owner of a rare NS-1000x which featured pure(not composite) carbon fiber woofer unlike the more common paper coned NS-1000M.
Why not get the NS-777 which is a truer match for your 2400,for now give the NS-555 a second chance, move them to nearfield listening postion away from the walls and closer to your ears, feed them some Jazz from Meola, Getz or Armstrong and if possible, bi-wire them and prepare for a pleasent surprise, the Yamaha appears to be bass shy at first but soon you realize that it is giving you true bass and not any exagerration, same goes for its treble. The Yamahas have always suffered from poor room acoustics, and acoustical coupling has been their bane. They need careful placement to bring the best out in them.
As for the HX, check out Steve J. advice on where to get them, he has them and is quite pleased with them and he did audition many others before settling for them. Sadly Yamaha marketing has the worse strategy when it comes to marketing their seperates and high end amps and speakers, they just dont wish to take that step and this has been from the very begining. While I was looking for the Yamaha amp and speakers in NY, there were only a handful of dealers selling their power amps whlie you could find myriads selling their lower end HT stuff, this didnt do Yamaha any favor as people only associated them with low end HT whereas Yamaha has also made some fantastic amps and speakers, Japan till today continues to get their fantastic power amps as well as the NS-1000M speakers while to get the HX series speakers in the US, one has to pray, however the HX speakers are available in Canada quite freely. Another gem which Yamaha never bothered to bring to US was their award winning NS-200/300 speakers which were qutie a success in Europe, your NS-555/777 feature the woofers from that range, they were pearl mica injected poymers and they are also used in Yamaha's studio monitor speakers like MSP-5/10.
All of us interested in getting Yamaha to start selling their high end stuff have to bombard Yamaha USA with emails asking them to abandong their jaundiced attitude and start selling what they show on their web site.</font>