Just wondering...  What clearance is needed by different bryston compenents.    Is it different for the SP3 and the amps?  Is it different for the monoblocks compared to the 4B-SST2,  and different again for the 6B-SST2 or the 9B-SST2?
Are the older models needing more or less space?
I realise that the manual will have a minimum specification,  but how different is that from recommended distance,  and is there an even more generous optimum distance?