Attempting to configure 5.1 with current gear and new Anthem unit-

Thanks for all thoughts. Previous Arcam was indeed a 5.1. as is the brand new Anthem model- Currently, the way the tech was attempting to set up---he was using the CJ Pre and Power amps to power left and right Vandersteen Quatros.  Attempting to use Anthem for Center and rears.  Hasn't worked out so well.  He is having issues getting Anthem to direct sound to left and right in surround mode. Will not switch.
Again, attempting to use Anthem for switching, as I did with previous Arcam. There is no customer support I can call for Anthem.  Again, my recollection is that Arcam had a different configuration??  I may be wrong.  Unless Arcam was set up to power all speakers for video and dvd, and I was only using CJ units for 2 channel. I did not have any peripheral hardware ---as I said, I am not a tech, and 
hoping to figure this out so I can get five channel sound.  One thing--we did not EQ room---not sure this matters as again, cannot figure out how to use the Anthem to direct sound to all five speakers I am using in that room.   Thanks.

What is the model of your CJ Pre-amp? Just curious if it has an HT Bypass/Processor Loop input?

If it worked before, it is likely that there was a pair of RCA interconnects running from the L&R front pre-out channels on the Arcam, into some input on the CJ Pre-amp (HT bypass input, Processor Loop Input, or other vacent analog input). When that input was selected on the CJ Pre-Amp, the front L&R channel signal from the Arcam would go into the CJ setup and the sound would come out of the speakers connected to the CJ 2-channel rig.

It can be done, it's just a matter of "how simple is it to operate". A unity gain HT bypass or Processor Loop simplifies things.

No time to add more at the moment. But I'm happy to answer questions later in the weekend. Gotta go for now......

Thanks for all input----again, not being a tech person, a lot of this is way beyond me.  And will consult with my tech assist, with all people have shared.   He is very good----I am just baffled as to what changed from previous work around with CJ equipment, and where I am now---of course I have no recognition of what was done previously, and/or the Arcam could do something in relationship to the CJ gear that the Anthem cannot?  Not thinking so.   
As a part time musician, I still prefer a real piano to any of the keyboards I play--

Unless the Anthem is not working properly, this should be no problem for any “tech” person to figure out.  It’s just not that hard.  Call Anthem — they should be willing/able to help. 

I wonder if he is using the ARC.  I am not sure how that would
d work with 2 amps in the system.  I think the OP is a bit clueless here and probably should seek out an installer who has familiarity with Anthem, as I suspect his does not and is probably unwilling to admit this to his customer