Anyone know where the subwoofer is located on the 350L? Was it omitted?

The sub was not omitted. I have a 350L with the ML system and it definitely is there. You can Google it, but the sub is on the driver's side rear in the cargo area. It is an 8" sub. Google Mark Levinson RX350L and you should should find it.

Can anyone tell me if the Lexus 450hL has a subwoofer with the ML audio package. If it does, where is it? It's not in the same location as the non-L version....

never mind... i found it. Unlike the the non hybrid, the sub is located in the back floor next to the spare tire tools. In the regular RX its on the driver side rear quarter panel.

As near as I can tell, in my non-hybrid 350L it is also on the floor on the driver's side rear area, not in the quarter panel. I didn't take a really close look though so I could be wrong.