How to set up 3.2 system with Yamaha CXA 5100 and MXA 5000.

[KUSHAAL SUBRAMONY]

I have the following:
4 X Yamaha NS-8930s Towers.
1 X Boston Acoustics A225c center channel.
2 X Bic America F-12 subs.

In the MXA 5000 amplifier, I have assigned Channel 3 to Channel 2. That way I can get all four towers to channel 2.

How do I activate the center channel and make it a 3.2 system?

 

[agarwalro]

What are you using as the source?

You will need a pre-pro to make 1:1 connections with the amp inputs. Something like this,

 

[lovinthehd]

He's got the CX-A5100 pre-amp per the thread title. Why do you want to only do a 3.2 system since you have speakers sufficient for 5.2?