Cab block

The Cab block has 70 factory (stock) cabs and 50 user cab slot for external IRs.

Each Cab block can use the X/Y feature to switch between sets of parameters.

So why do two Cabinet blocks in parallel rows sound louder than a single Cabinet block?
Bakerman: "It depends on how you're panning. Assuming a mono signal sent to cabs: Stereo cab w/ Pan L and Pan R fully left & right will be the same output level as 2 mono cabs w/ balance L & R. If pans/balances are centered the 2 mono cabs will be 6 dB louder. Balance elsewhere would be between 0 and 6 dB louder, and balance doesn't correspond 1:1 to pan L/R for the same placement. Balances will need to be further toward -50 or 50." Source