Use for Audio Work: How flat are they (freq curve)?

[bearcatsandor]

Folks,

I'm interested in building a full-range audio workstation for surround sound work in Ambisonics and using the phantoms for that purpose.

How flat are the phantoms?  

Does anyone have any speaker measurements?  

Would anyone recommend them for editing and mastering work? 

For what it's worth, i'd be hard wiring them to avoid and drift.

Thanks,

Bearcat M. Sandor
Feline Soul Systems LLC