Sub- Direct or internal crossover

[twoz]

I recently purchased a sub and have a few questions. I am new to alot of this but learning.
I have a velodyne sub & Denon reciever. Reciever crossover was set @ 80hz as well on the Sub. My question is should I be using "internal crossover" or "subwoofer direct"? They both produce completely different sound for the room. If I do sub direct- it sounds as if other sound in addition to LFE is coming from the sub. If I use internal crossover- it sounds very deep and I need to turn the volume up on the sub to achieve the bass I am looking for. Since I am not familar with EXACTLY what a true sub should sound like I am flipping back and forth between options and driving me and my wife crazy. Please advise on which setting should be used to recieve the most optimal bass management and explain the differences between direct and internal crossover.

Thanks in advance.

 

[MDS]

Am I correct in assuming 'internal crossover' and 'subwoofer direct' are settings on the sub itself (I don't own a Velodyne)?

If so, you want to use 'subwoofer direct' if you are using the receiver's bass management and have set a crossover frequency in the receiver's setup menus.

When you use 'internal crossover', the sub's crossover is active and you now have two crossover's in the signal path (one from the receiver and one in the sub). You can do it that way if you turn the sub's crossover to a higher frequency than that which you set in the receiver (to get it 'out of the way' so to speak). But since the sub has a means of defeating it's internal crossover ('subwoofer direct') you should use that setting when using the receiver's crossover.