Biamping question: "Small" or "Large"

[C J T]

Hello guys..I have a question and I would really like some expert advice about biamping and system set up.

Recently I did an experiment with my system. I have Polk RTI 12's in the front and use a Denon 3805 receiver and a Behringer EP 2500 amp. I tried running the Behringer on the RTI 12's with straps on, full range and then tried biamping. I found the bass was significantly better in a biamp configuration using the Denon on the highs and mids and I also had better balance with my Csi5 centre with the receiver running the front soundstage.

My question is regarding crossovers, and setting speakers to large or small. I don't understand what the point of biamping, or even using an amp at all on the fronts is if I set my fronts to "small". I find my system sounds better on small and the bass is routed to my HSU STF-3 so is the amp useless? Should I be setting my fronts to "large" to get any benefit of the added power to the drivers?

I also noticed a difference when I turned the low pass filter to "off" on the Behringer EP2500.

I have learned recently that my RTI 12's have an internal crossover of 120hz. Should that have any bearing on where I set my receiver crossover point? I like it at 80hz.

I know people will say, adjust it to your liking, but I just want to know if I am setting it in the most efficient way. How would the "experts" set up my system?

I also have RTI 6's in the back. Denon 2910 DVD player.

Thanks very much

CJT

[ben62670]

Set them to large for music. They can handle going all the way down. Are you using a sub? If so You should set them manually to 60 or 80hz.
Enjoy your system. I'm glad your receiver, and amp match well.

Ben

[C J T]

Thank you. Yes I am using a sub. A Hsu STF-3. Very big sub.

[Deadof_knight]

Set them for lage guy Im running a denon 3300 and set your sub out for the higher of the two choices. let the sub cross it over manually Im running a velodyne 15" under my staircase .....its the best way