Yamaha's latest subwoofers, the NS-SW300 and NS-SW200 pack some interesting technology into an attractive package. Priced at $550 and $450 respectively, and boasting "twisted flare" ports and Yamaha's YST II servo technology, do these subs deserve a spot on your Christmas wish list? Keep reading to find out. Discuss "Yamaha NS-SW300 & NS-SW200 Subwoofer Preview" here. Read the article.