Hello! Like you I've been thinking of doing the same. I have a 4B(NRB) driving a pair of Swans. Upon audition they were driven by the 7B(ST's). Haven't sounded the same since.
The past few days I have been e-mailing various high-end stores to get some input on my thoughts. Also spoke with James at Bryston. My idea is to upgrade my NRB to either the SST or purchase a used ST to go in its place. Then purchase a 3B of that series and bi-amp.
GOOD NEWS
For those of you who love tubes, you can use the 4B on the bass and drive the uppers via a tube amplifier.
Here is an excerpt from a reply by James Tanner:
"As for passive byamping usually the woofer requires more power than the mid
or tweeter so 1/2 power is fine. The thing to be careful about is the 'GAIN'
of the amplifiers have to be the same. The gain on the NRB is 30 dB the gain
on the ST and SST is 29 dB. So you would be better to get another NRB 3B to match."
Hope this may be of some use to some people.
Jarrod
The past few days I have been e-mailing various high-end stores to get some input on my thoughts. Also spoke with James at Bryston. My idea is to upgrade my NRB to either the SST or purchase a used ST to go in its place. Then purchase a 3B of that series and bi-amp.
GOOD NEWS
For those of you who love tubes, you can use the 4B on the bass and drive the uppers via a tube amplifier.
Here is an excerpt from a reply by James Tanner:
"As for passive byamping usually the woofer requires more power than the mid
or tweeter so 1/2 power is fine. The thing to be careful about is the 'GAIN'
of the amplifiers have to be the same. The gain on the NRB is 30 dB the gain
on the ST and SST is 29 dB. So you would be better to get another NRB 3B to match."
Hope this may be of some use to some people.
Jarrod