B&W 683's- Use another center or HTM 61?

Ideally you should choose a center from the same manufacturer and series (in the case B&W 600 series) to match your L/R mains. Manufacturers voice match speakers in a given series for multi channel applications. So I would definitely mate the HTM 61 with the 683's.

Surrounds are not as critical to match from same manufacturer as they do not receive nearly as much content in a movie or concert as the center and mains do. Hope this helps. Good luck.

I'm kinda on same boat. I honestly would like to use 1 684 as a center. Also have a chance to buy a used nautilus htm1 but not sure if I should spend the money on a old speaker plus have to add an amp to push it.

Thanks for the input. I noticed the B&W CMC2 has an extra mid range driver, but not sure if it is compatible with the 600 series fronts. I am going to call B&W and if it is I will go that route. Otherwise, looks like the HTM61.

thanks- Toni