For a church or concert hall organ we usually recommend a console from Magnus Organs in Poland, or Renatus in Devon, both of whom specialise in this kind of installation. They can also provide custom-built sound systems tailored to your particular building.
Please note that a Hauptwerk Public Installation Licence would normally be necessary for this.
Our two large Magnus demonstration organs, having done over a year's temporary duties at Rochester Cathedral (Kent) and Wakefield Cathedral (Yorkshire) while their pipe organs were out of action, are now looking for new homes - either temporary (minimum 6 months) or permanent.
See here for pictures:
Both of these organs come with a Hauptwerk Public Installation Licence, the Hereford Cathedral Willis sample-set and six large loudspeaker cabinets. Please contact us for pricing information - you might get a pleasant surprise!