I, too, had a question about this. I have my speakers set to larget and they certainly are not large...B&W DM601 s3's. I know this is probably not the best setting for them, but there's a reason I did it. The reason is due to 2 channel direct listening. Now, am I wrong to do this? I did this because I thought that if I set it to small, it would only send information to my speakers down to 80hz, with everything below that being sent to the sub...but in direct mode, there is no sub, only fronts. Does this hold true? If I set them to small, am I diminishing frequencies sent in direct mode? Or, when you put it in 2 channel, does it bypass these crossover settings altogether and send all frequencies to your speakers? I just don't want my 2 channel listening to be affected when I put it in direct. Does anyone know how this works? I'm using a Marantz SR8400. Thanks.