No LFE on subwoofer in playback

Question

I am compressing a final cut edit with some LFE sounds from apple loops. When I bring this into compressor, I enable LFE and choose 2.1 from the menu. But after I burn a DVD in DVDSP, the LFE sounds are garbage and don't activate the sub.
Anything else I should be doing.

Answer 1

Actually, I was mistaken in my last post - 2/1 for Compressor is 2 front, 1 surround. (I was thinking 2.1 and that's wrong)
Anyways, I do not believe that the Dolby Digital Encoder in Compressor can do anything less than 3 (full-range) channels in order to enable a distinct LFE channel.
But to answer your question directly - when you import your .ac3 file into DVDSP, selecting it in the Assets tab means that the Inspector will provide a detailed read-out of details like file format (.ac3), sample rate (48,000) and channel listing (2/1+LFE).
Another issue might be how you export out of STP - when I have a non-standard configuration (like what you're attempting) I have better luck with exporting Mono files (from STP). That allows me to play the LFE.aif file to make sure there actually is content in there. Then I plug only the channels I need into Compressor's Surround Sound Group input, slap on the DD Auto setting, then adjust for my channel number and LFE.