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What process did you use to integrate multiple subwoofers for 2 channel listening?

Today I will be trying to integrate up to three subs. Two are matching Rythmiks F12SE, and one is a REL R-328. The Rythmiks have a variety of adjustable parameters, including phase, crossover, and gain. There are other switches and passes on the sub, but I'm going to try to keep it basic to begin with. The REL has variable gain and crossover; the phase on REL is either 0 or 180.

I have REW for measurement. I will be buying a few more furniture sliders this morning, on doctors orders. ;-)

QUESTION: If you have multiple subs, by what process did you integrate your subs? One at a time? More? Which adjustments did you try first and in what kinds of increment?

I know that trial, error, measuring, and listening will all take time. Rather than look for a needle in a haystack, I'm curious what sequence or process was most effective for you.

Thank you.
128x128hilde45
tvad
11,620 posts
 
For this project, I can't think of a better resource than Duke LeJeune. 
http://www.audiokinesis.com/contact.html
mijostyn's avatar
mijostyn
8,530 posts
 
I forgot to mention MiniDSP, maybe the most cost effective solution.
golfnutz
231 posts
 
For starters, I would only use the 2 Rythmik subs to begin with. I think once you have these dialed in, you can add the REL sub to see what affect it has, and start tweaking from there.

If you download Enrico’s dialing-in document, you’ll find you need to set the Phase correctly, and Volume match your subs to your mains (pink noise and SPL meter required). Without doing these, you’re wasting your time with guessing. If you do this, you might find it easier to fix that early dip (use the extended bass filter to see how you can bump it up). Don’t adjust both subs the same all the time, experiment with one sub only, then set it back and try the other sub.

You should also load a graph of your main speakers only. I think you’ll find the same results as the graph you posted for anything starting over 150-200Hz (I’m not sure what the cut-off is on your subs). Basically, the subs aren’t going to fix this.

This is without any DSP, just location and adjustments on Subwoofer - https://imgur.com/a/G9kHdTt

I had to back off the low end frequency (20Hz - 30Hz) because my wife was complaining it was making the house shake too much.

mapman's avatar
mapman
22,111 posts
 
If it were me going through the time and expense of trying to setup multiple subs I would likely use a minidsp device to do it properly. 
powemi
5 posts
 
For everyone saying 

“to do this right you need X” 

He has a mic and software with subs that have a low pass control. That’s all you need. Nothing else fancy especially a dsp with converts analog to digital to analog again. 
How much did you spend on your DAC and you’re trusting the DAC inside the DSP to reinterpret it all?  
All those extra things are for people that want the easy fix without actually gaining knowledge on how your system works together.

Again doesn’t need anything new (I understand people love to throw money at a problem but it could be fixed with what he has before the shipment arrives); just spend a little time with the low pass filter while looking at you readings from the mic.
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