LFE vs High-level subwoofer connection, for FIDELITY

@ricred1  Since you have more than one sub, have you experimented with stacking them? 

Right right,  Paul knew something that cavemen like Dr. Brian Ding (Rythmik), Dr. Hsu, etc didn't.....NOT

Nonsense. Paul McGowen also highly recommends High level connection as does anyone in the world of subwoofers!!

It's so simple even a caveman should be able to understand. Your amp has a dynamic characteristic. High level connection you will get that. If you only connect to the pre-amp you bypass the amp and don't get what your amp is putting out.

If you want FIDELITY this is the best way..BY FAR!

Thought some of the issue is that LFE is made for movies, it's an "effects" channel. Some decoders do not do bass with music properly? 

For me using LFE I can tell there are subs in use (2 stacked), and constantly messing with the bass levels, as some sources have almost no bass, and others want to knock things off the walls. 

Moving to speaker level inputs, one I now have stereo bass (not sure how important that is) my subs have been set it and forget it. If I want more or less bass I just move my bass knob on my pre-amp, I almost never touch it. 

For my system, hi-level inputs sounds more blended, it's more even, my subs disappear along with my speakers. They sound more cohesive, in synergy. Plus they are easier to setup over LFE.

For me hi-level feels more analog, LFE is more digital. Think in the end it's all gear and setup dependent.  

Well, reminder that no AI can actually hear a damn thing.  Whatever your AI is using it’s subject to whatever garbage it found here or on Reddit.  Also every AI I know of is trained to be conversational and invent text that sound like they were typed by a person, without necessarily having a bit of evidence for their statement.  Just like a person but with less responsibility. 

I personally think that a major benefit of a subwoofer is to limit the stress on the main amplifier and loudspeaker.  For this reason, line level with a high pass filter is best, and I think this is how you get glorious subwoofer behavior.   One thing that you cannot do with speaker level outs is to use a separate EQ.  With stereo systems I like to put a miniDSP in line with my subwoofer only.  This is where the big corrections are often needed and keeps it out of the way of the main signal path. 

I’ve never heard full range speakers run with an additional subwoofer that sounded worthwhile, but if that’s your jam, then running from the speaker outs seems to be how you keep your amp flavor, for good or bad.   Consider a speaker with very low impedance in the mid-bass, a common thing.  Many amps will gently sag there, causing an output depression.  If you use the speaker level inputs, you'll replicate that sag. 

@jbuddha882 Yes, High Level is what you would want to use and not LFE if you are using it in a STEREO system setup. Never use LFE for anything other than SURRONDSOUND. LFE is for bass management in an AV receivers surround sound frequency functions to decoding the signal from the AV receiver and will send it to the sub. Line Level is a straight and direct signal that is and will always be the best connection to the sub in a stereo plus subwoofer system. You will have to adjust the bass frequencies from the subwoofer’s frequency controls on the back of the subwoofer or from an APP if the subwoofer has the access and functions to that format. Remember this is for stereo listening only when adding a subwoofer. Other than that, LFE input is strictly for home theater AV systems. But if you intend to use an AV receiver for your musical listening you can definitely and for sure use the LFE input on your subwoofer when listening to surround sound music. 

GOOD DAY AND PEACE TO ALL