I am a Scansonic Dealer and am happy to help. PM me if you want to discuss prices.
The MB 3.5B and MB 5B are fundamentally different designs and several factors are accounted for in the price. The 3.5B has two, side firing 6.5" aluminum drivers while the 5B has two 4.5" carbon fiber bass drivers.
Few things -
-The CF drivers are much pricier than the aluminum drivers. This is a practical incremental cost
- The cabinet on the 5B is both taller and deeper than the 3.5B. Even small changes can have an impact due incremental material costs and challenges in machining. I can do a 15" x 7" x 11" cabinet that is half the price of an 11'' x 11" x 11" due to raw material sizes and how they lay out.
- R&D costs. The front firing designs getting achieving a 2 hz difference in bass response with 4.5" drivers vs 6.5" drivers is nothing short of miraculous. I am certain that was not easy and took a LOT of time to get right which has to be recouped.
In terms of performance - In practice, these speakers are best with 9' of space between them. The 3.5Bs require a minimum of 4' in incremental space to either side. This means the smallest room they work in is 17' and 20' is better. The 5Bs can be place right effectively against the wall and be just fine so an 11' wide room is fine.
Finally, the bass, although not as deep, is going to be a bit more refined with the 5Bs.
The MB 3.5B and MB 5B are fundamentally different designs and several factors are accounted for in the price. The 3.5B has two, side firing 6.5" aluminum drivers while the 5B has two 4.5" carbon fiber bass drivers.
Few things -
-The CF drivers are much pricier than the aluminum drivers. This is a practical incremental cost
- The cabinet on the 5B is both taller and deeper than the 3.5B. Even small changes can have an impact due incremental material costs and challenges in machining. I can do a 15" x 7" x 11" cabinet that is half the price of an 11'' x 11" x 11" due to raw material sizes and how they lay out.
- R&D costs. The front firing designs getting achieving a 2 hz difference in bass response with 4.5" drivers vs 6.5" drivers is nothing short of miraculous. I am certain that was not easy and took a LOT of time to get right which has to be recouped.
In terms of performance - In practice, these speakers are best with 9' of space between them. The 3.5Bs require a minimum of 4' in incremental space to either side. This means the smallest room they work in is 17' and 20' is better. The 5Bs can be place right effectively against the wall and be just fine so an 11' wide room is fine.
Finally, the bass, although not as deep, is going to be a bit more refined with the 5Bs.