How many Ares would be needed to disable a capital shield, can a single S7 do the job?

Capital ships and their shields come in many shapes, sizes and types. Capital items are tailored to their ship due to lack of modularity, so there is no "standard" capital shield to measure against. Both the 890 and the Javelin are considered capital ships, but as you can imagine, they demand very different numbers to kill their shield emitters.