Do you use a Subwoofer when listening to stereo?

Hello,
If you are using your subs for music please run your front or L/R speakers full range and set the limit on the subs crossover to meld with your speakers. You might be surprised going all the way up to 110hz on the subs crossover for music or melding with the front two speakers. When watching movies it is a different setup they tell you to do. I do what sounds best. Even my very small surround speakers play down to 60 hz and my center plays down to 45 hz. I set the fronts to large or full and the rest at 60hz. My ported sub comes in at 80 hz to blend in.  My main speakers play down to 25 hz and my subs are set to roll of at 50 hz. This is the frequency when I could tell when they disappeared. 

Nobil100, no it is not fine to run satellites full range while adding subs for three reasons. First is you miss the opportunity to lower distortion and increase head room significantly in the satellites. Second is you make integration much more difficult. You are down where the wavelengths are over 10 feet up to 30 feet. Unless you are using digital bass management matching phase and time are difficult, usually by trial and error  moving the speakers and perhaps by using a phase control on the sub. Without a two way crossover there will be more overlap making the problem worse.
Digital crossovers can use slopes as high as 10th order which is actually too steep! Third is you will get a hump where the speakers overlap. Unless you can EQ the subs, keeping the system from booming at the overlap will force the volume down below the overlap keeping you from getting the power you need below 40 Hz. 
The hallmark of a good subwoofer system is that at a modest volume there is no difference in sound on subwoofer bypass until a really low note comes along. Use an acoustic bass solo and switch back and forth.
At higher volumes the decrease in distortion in the satellites may tip you off. 

Thanx cleeds, you are right about the outputs.

The quick answer:
No, I don't - its why I don't have one sub in the first place. 
Why?
1. Due to very favourable room conditions, my floors standers going down to quoted 35Hz are just fine as they already 'borderline', at times, tend overload the venue. 
2. Having had some exposure to only marginally integrated subs, leaves me to keep my wishes clear of any subs rocking my guts. (I'm not into 'thunder and lighting' AV shows either.)
So, 'Horses for courses' I'd say. 
M. 🇿🇦 

" Nobil100, no it is not fine to run satellites full range while adding subs for three reasons. First is you miss the opportunity to lower distortion and increase head room significantly in the satellites."

Hello mijostyn,

     I googled emergingsoul’s stated main speakers, B&W 804 D3, before I made any comments on his thread and these are what came up:

https://www.bowerswilkins.com/home-audio/804-d3

     These are the floor standing, full range satellites my comments were based on and they have a rated bass extension down to 24 Hz. Just like any pair of floorstanding speakers, of course, I realize it’s highly unlikely that their rated bass extension will be heard or perceived at the designated listening position without the utilization of at least 1 properly positioned and configured sub in the room.
     Apparently, you’re under the impression he has stand mounted bookshelf type satellites with limited low frequency output. If this were the case, then I’d agree with most of what you stated. But I definitely don’t agree with your statement:

" Unless you are using digital bass management matching phase and time are difficult, usually by trial and error moving the speakers and perhaps by using a phase control on the sub."

     Your statement is incorrect because bass sound waves are extremely long, spread out in all directions from the driver, whether the woofer is in a main speaker or a sub, and they continue to reflect off room boundaries (walls, ceiling and floor) until they’re either absorbed or run out of energy.
     In fact, we don’t even hear or perceive any bass sound at all until the very long complete full cycle bass sound wave is detected by our ears/brain. If we detect anything other than a complete full cycle sound wave, we hear or perceive any sound at all. If the room is not very large, this means the very long full cycle bass sound wave must reflect off of 1 or more room boundaries before it is even recognized by our ears/brain as such and a perception of sound generated by our brain.
     The truth is, much of the deep bass sound we hear in a room is typically perceived as a result of reflected, and not direct, sound waves. Given these physical realities in most normal sized rooms, it’s obviously not possible to time align over the entire audible frequency range.
     It’s virtually impossible to ensure that the long and omnidirectional bass sound waves arrive at the designated listening position at the same time that the much shorter and highly directional midrange and treble sound waves arrive, Fortunately, it’s not relevant since humans don’t require time alignment for accurate sound perception.
     In regards to matching phase, your statement is more accurate. However, it’s also true that inverting the phase on a single sub, in a room with multiple subs, can improve perceived bass performance.

Tim