Yes, it's interesting to note (if you wanted to know - and I suspect you do) that the extra Sub doesn't change the overall sound of the L1 and make it too Bass heavy.

To explain - the extra sub gives you more headroom, but no matter how many subs you attach to a system (say 1, 2 or even 4 with the extra Paclite Amp) the system "self EQs" to be foolproof and maintain a consistency of sound (maintaining a stable Bass-to-treble ratio). At first I didn't really like this idea as I felt it takes the "choices" away from me, but then I realised two things.

1. I am a fool, so being foolproof is not a bad thing, or to be more serious, it's hard to get a Bad sound from whatever number of B1s you have.

2. You still have complete EQ control over the system via your Mixing desk (through The T1 or other mixer) so you really CAN "mess up" the sound as much as you want.

Anyway I probably didn't explain that very well so here's a more useful cut n paste from Bose's online Forum regarding the Auto EQ feature:

" This is based on the design goal that 'You should always sound the same; no matter how much Bass stuff is attached' "

or to go further:

"What this complex behavior does is the following. No matter if you attach 1, 2, or 4 B1s, you will get pretty much the same balance between all combined B1s and the L1s. It’s a little off for 3, 5, 6, 7 & 8 B1s, but still reasonably close.

It’s true that the user doesn’t have to re-EQ our systems if you add more B1s or even a PackLite with another pair of B1s. But that’s unique to our system, because we were actively measuring the number of B1s attached. So re-EQ is required, but the system is doing it by itself without any user involvement required. "

I find that reassuring and kind of cool - there's all sorts of smart Electronics/Processing going on behind the scenes with the L1........