How many subwoofers are you using in your main system or home theater?

[Usher99]

With an MSO sub only configuration just set the XO on the fronts to the highest value available and disconnect one of the fronts. Signal sent to the disconnected front will only go to sub out. Use the other front for timing reference.
This method also has the benefit of not being restricted by the LPF for LFE filter. So the sub will play higher frequencies than when using the LFE channel, unless of course your processor allows you to turn it off.
Easy peasy. No need for ASIO.
If you’re connecting REW to your processor with HDMI the EXCL labeled drivers will allow you to directly access all channels. Available in current version of REW. So, still no need for ASIO, but I’d still go with my first suggestion if you can’t deactivate the LPF for LFE.

Wow! No clue that was possible. I had thought ASIO was the only way for my Anthem AVR to access all channels. I need to learn more about EXCL. A generous genius on this forum came up with a procedure to allow MSO to work with usual Java drivers:

“You're using a miniDSP, right? If that's correct and you're using MSO "Sub-Only" procedure, and ASIO refuses to work, you can get your MSO measurements using the JAVA drivers by:
1. TURN OFF THE POWER TO SUBS, MINIDSP AND AVR WHILE CHANGING THE CONNECTIONS
2. Connect the miniDSP to either the right or left speaker PRE-AMP OUTPUT AND DISCONNECT THAT SPEAKER on AVR. (the other will be used for timing reference.)
3. Set the fronts to "Large" in the AVR.
4. Follow MSO instructions from here.”

Your current suggestion sounds much easier. Thank you! I got the MLP to sound very good with the mini dsp and did overlay Anthem room correction using my one virtual sub.
The secondary seating positions sub response is not great. I need to revisit MSO.

 

[Todd Anderson]

The secondary seating positions sub response is not great. I need to revisit MSO.

I often wonder if folks that sit in secondary seating positions care - or know to care. I completely understand where you're coming from - but, there's something to be said about being happy with one super dialed in seat. It's definitely easier on my home theater OCD!

 

[3dbinCanada]

Acoustics rules are not a tenet, but a method to avoid of rough mistakes. This room doesn't seems to me simple. However, we have to remember some of them. The first of all, good bass responce requires dense and massive fences. For this room we see to many windows, which hinder in following it. The second, your hall has some connected rooms. The third, there are many soft furniture subjects - sofas, armchairs and I'm not sure, that wall and ceiling finishing is done without gaps between masonry and plasterboard "blankets". All these circumstances exclude, as a rule, a possibility to use only one-two subs. Undoubtedly.

Agreed. This is the point I'm trying to make. Most peoples' rooms are designed around living accommodations and not designed to be bass friendly. I use three subs tied together by a MiniDSP 2x4HD and I've done an alright job in getting fairly smooth bass response in the room. That's why I said that in most cases, people do NOT have a choice. They have to work with the constraints of the room which includes multiple subs and some sort of DSP to acoustically glue the subs together.

 

[3dbinCanada]

I often wonder if folks that sit in secondary seating positions care - or know to care. I completely understand where you're coming from - but, there's something to be said about being happy with one super dialed in seat. It's definitely easier on my home theater OCD!

I can relate!!

 

[rlarson68]

I have 4 Rhythmik Audio G25hp's
Minidsp 2x4 HD
Dirac Live is on my pre-amp, but I do not have the subs aligned yet. Trust me, I have tried, but trying to read the Dirac live guides is a lot for me, so I have watched several videos and am more confused, so listen to the system the best way I can make it sound the manual way.

 

[schmidtwi]

I have 4 Ultimax UM15’s and 2 UM18’s in sealed boxes. MiniDSP 2x4 & Behringer amps (6000 & 2-3000). Dedicated HT treated well.

 

[Sonnie Parker]

I have 4 Ultimax UM15’s and 2 UM18’s in sealed boxes. MiniDSP 2x4 & Behringer amps (6000 & 2-3000). Dedicated HT treated well.

I had a couple of those UM18 custom built units at one time... they were incredibly durable and I can't ever remember them not handling everything I could throw at them.

 

[Sal1950]

I had a couple of those UM18 custom built units at one time... they were incredibly durable and I can't ever remember them not handling everything I could throw at them.

So why did you get rid of them ?

 

[ddude003]

Because some is good, more is better, and too much is just right...

 

[Sonnie Parker]

So why did you get rid of them ?

Well... I think that is when I decided to go all SVS because I already had some other SVS. Then later I ended up going with 8 JTR subs.

Because some is good, more is better, and too much is just right...

Amen!!!

 

[Sal1950]

Well... I think that is when I decided to go all SVS because I already had some other SVS. Then later I ended up going with 8 JTR subs.

Amen!!!

Understood & completely agree, wish I had the room for more. I've got 2 SVS SB2000 active now but mostly sufficient for my limited space.

 

[DY2]

In a 7m x 6m attic room with two sloping walls I use 6 Klipsch R-series 12 inch subwoofers, along with Bi-Amp fronts. I still have some work to do on the settings, the latest measurements look like this and the speakers are these:

 

[Todd Anderson]

I’ll bet that sounds great - where do you have the subs positioned?

 

[Onetrack97]

In a 7m x 6m attic room with two sloping walls I use 6 Klipsch R-series 12 inch subwoofers, along with Bi-Amp fronts. I still have some work to do on the settings, the latest measurements look like this and the speakers are these:

Sorry but your LF looks very weak from 15 to 40 Hz. Where do you have them placed? It looks like they are sealed subs that give out pretty quickly. Consider adding one or two higher end subs to the mix and integrate with MiniDSP and Multi Sub Optimizer.

Being in an attic type space, at least you have floors that will move some compared to a concrete slab.

 

[AJ Soundfield]

Are all the speakers up front for the photo or is that the actual positions? Might I suggest 1/6th oct smoothing on your graphs also?

 

[DY2]

Sorry but your LF looks very weak from 15 to 40 Hz. Where do you have them placed? It looks like they are sealed subs that give out pretty quickly. Consider adding one or two higher end subs to the mix and integrate with MiniDSP and Multi Sub Optimizer.

Being in an attic type space, at least you have floors that will move some compared to a concrete slab.

My goal is to hear well above 30 Hz, because that's where the subwoofers are limited.
I'm still testing and looking for solutions for them, I'm just looking for DSP because otherwise I can't adjust all 6 SWs correctly. They're currently connected to a Marantz AV7704 and I don't have enough outputs. The room is entirely made of wood with good insulation, I don't have too much reverberation.
The SWs are Klipsch R-121SW, they're not sealed.
The response curve currently corresponds to what others have tested on dedicated equipment.
The SWs don't give up quickly, I've also tested my sistem at 140dB and everything is ok.

 

[DY2]

Are all the speakers up front for the photo or is that the actual positions? Might I suggest 1/6th oct smoothing on your graphs also?

Of course, the speakers were only put in for the picture, it's a bit silly to put the surrounds in without SW.
I forgot to put the picture with the ones for Auro-3D, which can no longer be put in for the picture.

I also have graphs with 1/6 smoothing. With 1/1 I just followed the line to see how it goes after I put the two amplifiers on the fronts.

Here are two examples of 1/6 with normal fronts and one with Bi-Amp fronts.

I'm also leaving the file with all the tests performed so far, on all frequencies, the one in bold is what I'm using now and it's ok for now.

 

[DY2]

I’ll bet that sounds great - where do you have the subs positioned?

I placed them approximately on the six sides, two front/back and one on the side.
I had to move them several times until I got rid of the biggest voids in the room.
I'm waiting to test with DSP as well.

 

[Todd Anderson]

Why kind of XLR cables are those? Custom?

 

[DY2]

Why kind of XLR cables are those? Custom?

Yes, I make all the cables myself, I don't like snake oil...

 

[Todd Anderson]

I like the idea of the angled heads