Originally Posted by JimP
At one time, I thought the only difference between the 450s and 370 was that the 450s had a nicer piano black finish. Bought both. Turns out that I was wrong (what else is new lol). The 450s really do sound better than the 370s. More detailed and broader dynamic range....regardless what the specs say.
As I recall, the AT dealer where I bought my 370s told me that the 450s are more dynamic, can play louder, and sound different than the 370s. I no longer have the Home Theater review of the 450, but from what I remember, the comparison in sound with the 370 was similar to what you state here. That being said, the 370s sound wonderful in our little HT room with the SVS sub.
As trivia for anyone that might be interested, the Suggested Retail Price (January 1, 1999) of the entire System 450THX Ultra was $5496.00 while the System 370 THX Ultra was $4296.00