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[Plamen Milev]

I'm running my system through DCX2496 in configuration A+B (left and right channel) and C being sum of A+B.
C is for my two subwoofers that I stack together and they basically run in mono.
I do DJ events playing pre-recorded material.
What are your thoughts on running the bass section in mono? And should I change to stereo?
Subs are crossed 35 to 88Hz

[Riley Casey]

Subs should always be in mono. There is no stereo localization in frequencies that low and no benefit to running them that way.

[Paul G. OBrien]

I have my passive rig configured the same way and most of my active speaker deployments involve a single sub so they are effectively the same. There has never been a complaint that bass wasn't in stereo.

[Tim McCulloch]

Subs should always be in mono. There is no stereo localization in frequencies that low and no benefit to running them that way.

Agreed. Even the Lititz Aardvark or Jim Yakabuski's Armadillo begin with a mono sub source.

[Steve-White]

LF Mono summed for everything - no exceptions between playback or reinforcement systems - portable or installed.

[Mal Brown]

for those of us using powered subs, no driverack, etc and using mixers like the ui-24 or xlr 18...  what is the best way to get  to mono subs and not have to use aux fed?

only way I see is left and right to 1 sub and sum from there to the other.  At least with kw-181 that would be possible.  OR run L&R to each and match the volumes ...There would have to be a significant benefit for me to bite either of those approaches...

Next spring when the biz (hopefully) picks up again in my area, I will probably migrate from using the internal QSC crossovers to driverack setup as I'll be putting DZR 2 way or DZR 3 way tops over the QSC 18's or over LA400's That will certainly make mono easily available.

[David Sturzenbecher]

for those of us using powered subs, no driverack, etc and using mixers like the ui-24 or xlr 18...  what is the best way to get  to mono subs and not have to use aux fed?

only way I see is left and right to 1 sub and sum from there to the other.  At least with kw-181 that would be possible.  OR run L&R to each and match the volumes ...There would have to be a significant benefit for me to bite either of those approaches...

Next spring when the biz (hopefully) picks up again in my area, I will probably migrate from using the internal QSC crossovers to driverack setup as I'll be putting DZR 2 way or DZR 3 way tops over the QSC 18's or over LA400's That will certainly make mono easily available.

Send your left-right to a mono matrix.  That or whirlwind makes passive summers for $40-$50.  You could make your own passive summer with resistors for around $10.

[Tim Weaver]

for those of us using powered subs, no driverack, etc and using mixers like the ui-24 or xlr 18...  what is the best way to get  to mono subs and not have to use aux fed?

only way I see is left and right to 1 sub and sum from there to the other.  At least with kw-181 that would be possible.  OR run L&R to each and match the volumes ...There would have to be a significant benefit for me to bite either of those approaches...

Next spring when the biz (hopefully) picks up again in my area, I will probably migrate from using the internal QSC crossovers to driverack setup as I'll be putting DZR 2 way or DZR 3 way tops over the QSC 18's or over LA400's That will certainly make mono easily available.

There's really no downside to running stereo subs, except that there will be no stereo "effect". Essentially subs, even when running in stereo, will effectively be mono anyway.

Now, here's the real reason everyone groups subs into a mono source. If the music has low frequencies panned to one side or the other, that LF will only be coming out of one sub and you lose half your horsepower. Running them from a summed mono source allows that LF load to be shared amongst all the subs instead of just half of them.

But if the source material has all the LF panned center (as pretty much all modern music does it) it really doesn't matter.

[Ivan Beaver]

There's really no downside to running stereo subs, except that there will be no stereo "effect". Essentially subs, even when running in stereo, will effectively be mono anyway.

If you run stereo subs and you have a double kick that is hard panned left and right and going fast, it is a pretty cool effect.  IN THE MIDDLE

But for the rest of the show (where a single kick is being used), a lot of the audience will not be getting a decent kick sound.

But if all you care about is the middle, then go for it.

It all depends on what is important and who is important, and for what reason.

[Brook Hovland]

Mono subs are the most common way to go.
I have seen ONE rider demand left and right subs. (I am old and have read thousands of riders over the years) This was specifically for the toms on the drum set.
This act has since abandoned that and gone with mono.
A theater that we work in often just installed a system and the consultant specified stereo subs so we bring a XLR Y to the venue every time now to save guest engineer confusion.
I would stay with the mono configuration if I were in your shoes.

I'm running my system through DCX2496 in configuration A+B (left and right channel) and C being sum of A+B.
C is for my two subwoofers that I stack together and they basically run in mono.
I do DJ events playing pre-recorded material.
What are your thoughts on running the bass section in mono? And should I change to stereo?
Subs are crossed 35 to 88Hz

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