Subwoofer. Great one song. Not so great the next song.

I see that you read the article Erik wrote and posted on his website. In it he devotes a fair amount of virtual ink to discrediting the distributed multi-sub concept by labelling its advocates "cultish". If you are open to hearing an opposing viewpoint on the merits of a distributed multisub system, let me know.

The only negative thing I have to say about the concept and technology is the added complexity of the idea. Hawk it all you want to, I won’t interject.  It is the behavior I have been subjected to.  Be nice and I'll be nice.  Simple enough concept for most.

Leaving ports open will extend the low frequencies of the mains and allow the sub to come in at a somewhat lower frequency that is less directional and less likely to call attention to a single subs location in the room.

True but if your mains are 2-way, they will have more IM distortion in the midrange, and will have much more excursion below resonance, leading to limited dynamic range. Well integrated, an 80 Hz cut off is just fine. Maybe even 100 Hz.


Honestly though, in my mind integration is such a difficult task for most that whichever way you find easiest to integrate well s probably the right one and then leave it alone. :)

Best,

E

Eric that is true and always an option but an external crossover would be needed to limit the low end on the mains with most subs. Not sure about this one in particular.
That adds cost and complexity as well. Maybe worth it to offload more to sub and limit mains if needed to go louder and clearer later. A trade off depending on users appetite. and needs.
Yes bass swarm adds more complexity as well but that is what you need if balanced bass throughout the room is a concern in most cases.   Personally I will pass on that but some may have a need and choose to conquer. 

kr43,477 posts07-24-2020

here is no crossover in the e110, so there's really no point to doing this.

Turn the FEQ, all the way down, Counter Clock Wise.

What's an FEQ?

My suggestions are to consider a preamp with bass management, an external crossover and/or an external DSP for equalizing the sub in your room.

<<<<<<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>>>>>>>

There is a Crossover...

According to the picture I saw, and the spec sheet I read.
The FREQ, OX, FEQ, all refer to the crossover point, 25-125, I believe

There is a master gain control, a 0-180 phase switch, a 0-220 variable
and a selectable XO from 25-125 or so..

I suggest starting LOW, all the way to the left, CCW, at 25 and slowly turn it up, until it starts getting boomy, then back it off a bit. It's going to be around 30-35 or so. Makes sure EVERYTHING is at 0 on the tone control, if you have it on the pre, OR anywhere else for that matter EQs everything.. All ZERO (0).

BECAUSE you can't move the sub, there is going to be a bit of a timing issue. Simple too.

In the seated position, once the XO is close (FREQ)  try adding a little phase correction at a time, maybe 20 at a time until you hear the clearest, LOUDEST (defined) bass notes. When the bass goes away, it's to far out of phase, turn it bac a bit.. When it's in time (as close as you can get it)  you'll be able to hear ALL the notes, not just the one note bass, or cancellation, due to combing.

Again SEATED, no where else matters, because room treatment, la-te-da... ok...Seated only!

Most folks add a sub, not understanding, to much is just BAD. less is always better in the 20-80 hz range, BUT you got to have it, for the best sound...30hz to 20Khz.

Enjoy..

Regards

Eric that is true and always an option but an external crossover would be needed to limit the low end on the mains with most subs. Not sure about this one in particular.

Um, sealing will raise the -3 dB point of the mains and, most importantly, limit driver excursion which id what I was getting to. Even without an active filter. Below resonance the port is basically just a huge hole, and the suspension value of the air trapped in the cabinet vanishes. Take a look at the very last graphs on this article, and compare to the 2nd pair of graphs:


https://www.audioholics.com/loudspeaker-design/sealed-vs-ported-subwoofers



By sealing the port, the cabinet volume maintains it’s suspension value below resonance, and therefore limits this movement, allowing the driver to handle higher output than it would otherwise. Also, this raises the speaker’s effective -3dB point, perhaps only by 10 Hz or less. Assuming it was ported before, and you seal it, the speaker would become over-damped and roll off too soon compared to an ideal sealed. Again, with the right EQ on the sub, the combination can be pretty good.

Limiting excursion means you can apply more power before the driver taps out. 

Not as good as an active, carefully integrated solution, but some important benefits to be considered when adding a sub.