Which Sub or smaller subs would you recommend to go with 2 Bose L1 Compacts? I would also want to use a crossover...any recommendations?
No external crossover. I go from either my Hercules RMX or Denon MC6000 directly to the QSC KW-181, and from there to each of the L1's. The "band loss" due to the mismatched mixing of brands is minimal and on the the very low end...hardly noticeable. The whole issue is discussed in awesome detail here: http://start.mobilebeat.com/showthread.php?58347-BOSE-Dual-L1s-with-an-External-Powered-Sub/page2&highlight=bose+qsc+kw-181Thanks for the input Steve. Reason I ask is because I want to get 2 Compacts for ceremonies and cocktail hours...but would like to use them for certain events 100 People or less just for carrying convenience. I wouldn't use them alone (I know some DJs do) but would like a little low end reinforcement. Which brings me to the next question...do you use a crossover with your QSC KW-181?
I think I'd be looking at a sub that has a built-in variable crossover. However, in light of the "NEW" info posted by djmm (see below), it might not be a bad pairing because IF the L1's can get down to 110hz, then the "frequency hole" is minimized to between 97hz and 110hz ...... I still doubt the overall response will be flat at the point of crossover but it would hardly be noticeable considering the harmonics.
If you have the Bose subs connected, then the L1's go down to 200. If you do not have the Bose subs connected, they go down to 110.
I have been using them for 5 years and I am 100% positive on this. STRAIGHT FROM THE BOSE WIKI: L1® Classic and L1® Model I
Frequencies above 110 Hz are sent to the L1 Cylindrical Radiator™ This is less of a "crossover" and more of a cutoff just because there's no point sending frequencies to the L1 that it can't reproduce.
It doesn't mean that if the L1 cutoff is set to 110 Hz, you won't hear anything from the low E string. Our perception of tones is based not only on the fundamental (in the case of the low E at 82 Hz it is lower than 110 Hz), but it is also based on the harmonics we will hear in multiples of the fundamentals (2 x 82, 3 x 82, 4 x 82).
Add the B1 (with all four conductors working) and the PS1 does this:
Frequencies above 180 Hz are sent to the L1 (the crossover is moved up).
Frequencies from 40-180 Hz are sent to the B1 (and some processing (EQ) is applied to the 40-180 Hz range) to optimize things with the design of the B1.
For reference, 40 Hz gets us into the range of the low E string on an Electric Bass (an octive below our low E on an Acoustic Guitar).
Here's a bit more from Hilmar-at-Bose about the really low notes:
As always I recommend this test to determine if a sub cuts it or not ...... Play the first three notes of Outcast's "I Like the Way You Move". If the sub produced that third note with any punch at all, then you've got a winner. My old EV SBA-750's wouldn't cut it but I hear the SBA-760 upgraded version does. But since moving to a Dynacord powered 315 ..... no problem. I also just purchased a full EV ZXA1 system (2 tops, 2 subs) and for up to 150 people, this thing ROCKS.
Why not give a listen to the new Bose B2's .... rumor has it they're killer but I haven't heard one yet. Of course if you want a small sub that you'll no doubt have to turn down, try the KV2 EX2.2