Go for it - why not! MM

oh man, are the 28s and Theatre not bassy enough! I mean, yeah why not add a 19 I guess, but I'd be very surprised if your current setup is not already on the bass heavy side. Am I missing something?

I checked some specs and the 19 goes down to 18Hz as opposed to 27/28 for the theatre and BL28s... maybe it'll make a difference. the theatre is supposed to adjust everything... so I guess I'll be OK...

My dealer seems to be suggesting that the with the Theatre redirecting bass to the 19 instead of sending all to the 28s and 1s, the overall sound would be improved.

My opinion, is that the Theatre is a great leveller. I don’t think people should get hung up in speaker envy. If you have Beolabs and a Theatre, go for it and enjoy! It will be a great AV system and envy of many.

sure, up to a point. But if one was a watcher of action movies etc (with all the associated effects), I'd have thought height channels offer a more meaningful performance delta.  

With that combination of speakers, you might try placing the 19 behind your listening position. I really like having a nice balance of bass surrounding me -- such as what I have with 2 BL9s as fronts, 2 BL9s as rears, and just using the BL1s as sides. The BL1s are so lacking in bass and have such a shrill sound that I think they might sound annoying as rears. I also think the great height of the BL1s might bother you when using them as rears so close to your ears.

I have never found the 1s shrill, although I know many others do. I have found them very warm. I used them as rears for years with a BV7 and 9s, until I moved them to be fronts in another room. At the time my wife was nit happy as she loved them as rears, as did I.  With the Theatre I have returned them to the room as rears. The sound is amazing! I was thinking of the 19 possibly being in the rear. But, the more I listen to the system, the less I think I need a 19.  The bass is incredible already.  Also, I read on Geoff Martin’s blog that if a 19 is connected to a Beovision with BL9s, the the 19 will receive no sound as the BV will direct all bass to the 9s as they have a better sub in them. With 28s as fronts I am seriously wondering if the 19 would add much if anything. I wonder what would happen if I connected one of my 9s to the Theatre but told the Theatre it was 19? LOL. Just for fun and as a test of course.

https://www.youtube.com/watch?v=7VduKLZX2lM Shared bass across all loudspeakers to even out room-related issues.