I am setting up my new Triton 2+ to use with an Exposure 1020S2D integrated amp and OPPO BDP-103D universal disc player. In the OPPO 'Setup Menu' - 'Audio Processing' - 'Crossover' - I can select from 40Hz to 250Hz. There is no 'Off' position.

Any recommendations? I didn't notice any differences even between the of extremes of 40 and 250Hz. Is this mainly for use if I had a seperate sub-woofer/LFE?

Hi MitchZ, and welcome to the forum.
I will let someone with the 103 answer you more effectively, specifically, but the crossover that would make a sound difference would be in your receiver, the one where you can select whether to output full range sound to your T2+ or to send the bottom end frequencies to a subwoofer (or to the LFE input of your T2+ IF you had them connected). In your Oppo it is probably bypassing that crossover choice somewhere else, and that is the reason you heard no difference.
How does music sound? If it sounds great, then no harm no foul.
Hope this helps, but others can and probably will help more.
Be welcome here, happy listening, you have great speakers,
God Bless,
Wayne

MitchZ wrote: I am setting up my new Triton 2+ to use with an Exposure 1020S2D integrated amp and OPPO BDP-103D universal disc player. In the OPPO 'Setup Menu' - 'Audio Processing' - 'Crossover' - I can select from 40Hz to 250Hz. There is no 'Off' position.

Any recommendations? I didn't notice any differences even between the of extremes of 40 and 250Hz. Is this mainly for use if I had a seperate sub-woofer/LFE?

For two channel playback there is no audio processing. Your left/right analog outputs should be full range, in the setup menu all speakers other than left/right main should be set to No.