Duane:
The NHT ST4's will give you a noticeably different sound than the B&W's. I always found the B&W 600 series a little dry sounding, with a tendency to emphasize the treble end of the spectrum. The NHT's are going to sound warmer and somewhat more musical. I have also found NHT's (as well as NHT designed speakers, like the Acoustic Research 303 classic series from the mid-90's) to partner well with Adcom equipment. I have not owned the same model numbers as you, but I owned the Adcom 545/500II combination for 13 years and currently own the AR 302's for the last 4 years and the NHT SB2's for the last year ... so I am pretty familiar and satisfied with the "house" sound, so to speak.
The NHT ST4's have side firing woofers , so you should be getting a lot more "gusto" with these speakers. They were reviewed in The Absolute Sound . As your add to your system, keep in mind a used SONY SCD 333ES or 555ES SACD changer. They both do a great job with SACD's and are pretty respectable with redbook CD's.
Good luck.
Regards, Rich
The NHT ST4's will give you a noticeably different sound than the B&W's. I always found the B&W 600 series a little dry sounding, with a tendency to emphasize the treble end of the spectrum. The NHT's are going to sound warmer and somewhat more musical. I have also found NHT's (as well as NHT designed speakers, like the Acoustic Research 303 classic series from the mid-90's) to partner well with Adcom equipment. I have not owned the same model numbers as you, but I owned the Adcom 545/500II combination for 13 years and currently own the AR 302's for the last 4 years and the NHT SB2's for the last year ... so I am pretty familiar and satisfied with the "house" sound, so to speak.
The NHT ST4's have side firing woofers , so you should be getting a lot more "gusto" with these speakers. They were reviewed in The Absolute Sound . As your add to your system, keep in mind a used SONY SCD 333ES or 555ES SACD changer. They both do a great job with SACD's and are pretty respectable with redbook CD's.
Good luck.
Regards, Rich