Jon and the prodigy preferes to use D&B audiotechnik speakers for both Front of House and Monitor's.
D&B speakers can only be driven by D&B processors and amplifiers as everything is intergrated.
For front of house the prodigy use the J-Series array, however Jon doesnt use the J-Subs as he doesnt feel they are up to it!
Usually directy under the main arrays there are J-INFRA subs (141 SPL) with a continuous row of B2 subs (139 SPL) along the front of the stage.
For monitors, the side fills consist of a compbination of B2 subs on the bottom end with C-series box's on top.
The same arrangment is also used for Liam Howlett's personal rear fill.
Floor wedges used I beleve to be D&B M6's.
If you want more information on the D&B speakers you can go to
http://www.dbaudio.com/ where all the specs are available.
Another point to remeber, if its a Prodigy gig, its likely the team will deploy a full D&B system- but when the Prodigy are playing at multi-artist events, such as festivals, then the front of house system may be something different to D&B, L'Acoustics for example being a very popular choice. However the prodigy will usually deploy there own monitor systems, along with the rest of there on stage set.
Hope this helps a little,
All the best
Phil