tparm
Minor Hero
Posts: 16
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Post by tparm on Sept 1, 2021 11:38:05 GMT -5
I am fairly new to the Emotiva processor family and I see various places where this has been kicked around but I wanted to start its own unique thread. This evening I’m completing my system set up in a new home. I am using an RMC-1L and two SVS PB-3000 subs. I plan to use REW to finalize placement of the subs, speakers and room treatments. During this process I will use the three brand PEQ built into my subs for leveling peaks in the subwoofers response. Following this I will run Dirac and then fine tune the crossover points with REW.
I’ve read so many differing opinions on whether to use a y adapter connecting both subs to a single output or use the LR discrete sub outputs. A few folks I know who have extensive experience with Dirac say use the summed method and earlier today Emotiva customer service said use discrete….. I can try both, but good lord it gets into so many sweeps and set up changes I thought I’d see if there is an overwhelming recommendation here.
Lastly, I listen to most music in Reference Stereo so subs aren’t in play. However, I’m curious to see if I prefer stereo with Dirac engaged or even 2.2 versus just my LSiM 707s on their own. Also, I just admit somewhat coyly I am enjoying some music in Apple Atmos on my system so my surround set up is suddenly more critical than when I only watched movies using the entire speaker ensemble. I will run Dirac profiles for both open and sealed modes for the subs and for pure 2CH versus others references previously.
I expect this to take a couple of weeks to finalize but I’d like to get started in one direction or another this evening.
Thank you.
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KeithL
Administrator 
Posts: 10,004
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Post by KeithL on Sept 1, 2021 12:02:46 GMT -5
When it comes to subwoofers everybody has an opinion... and many of them are equally valid. I would personally say that: - If I was going to let Dirac do all the work I would use the separate Left and Right sub outputs (different subs, at different locations, will call for different adjustments). - BUT, if I were planning to individually select locations for them, then individually measure and EQ them, I would probably use the Y-cable
(I would look at it as "I'm creating a single optimized subwoofer system... then I'm going to hand IT off to Dirac to integrate into the rest of my system.) Just beware of falling into the trap of overthinking and overworking the situation.... Different measurement methods will produce different results... so you could end up "going back and forth rather than narrowing in on one perfect result".
In general, when it comes to speakers and rooms, there isn't really a single "perfect best", and you can easily get lost down the rabbit hole of endlessly searching for it. I am fairly new to the Emotiva processor family and I see various places where this has been kicked around but I wanted to start its own unique thread. This evening I’m completing my system set up in a new home. I am using an RMC-1L and two SVS PB-3000 subs. I plan to use REW to finalize placement of the subs, speakers and room treatments. During this process I will use the three brand PEQ built into my subs for leveling peaks in the subwoofers response. Following this I will run Dirac and then fine tune the crossover points with REW. I’ve read so many differing opinions on whether to use a y adapter connecting both subs to a single output or use the LR discrete sub outputs. A few folks I know who have extensive experience with Dirac say use the summed method and earlier today Emotiva customer service said use discrete….. I can try both, but good lord it gets into so many sweeps and set up changes I thought I’d see if there is an overwhelming recommendation here. Lastly, I listen to most music in Reference Stereo so subs aren’t in play. However, I’m curious to see if I prefer stereo with Dirac engaged or even 2.2 versus just my LSiM 707s on their own. Also, I just admit somewhat coyly I am enjoying some music in Apple Atmos on my system so my surround set up is suddenly more critical than when I only watched movies using the entire speaker ensemble. I will run Dirac profiles for both open and sealed modes for the subs and for pure 2CH versus others references previously. I expect this to take a couple of weeks to finalize but I’d like to get started in one direction or another this evening. Thank you. |
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Post by ttocs on Sept 1, 2021 12:14:15 GMT -5
What Keith said is valid and straightforward. I tried connecting one sub to each output and used it that way for a few years.
Then I began to use the "1 to many" approach, one subwoofer output to multiple subs via miniDSP. Things got more complicated and the results got much better.
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tparm
Minor Hero
Posts: 16
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Post by tparm on Sept 1, 2021 17:42:40 GMT -5
When it comes to subwoofers everybody has an opinion... and many of them are equally valid. I would personally say that: - If I was going to let Dirac do all the work I would use the separate Left and Right sub outputs (different subs, at different locations, will call for different adjustments). - BUT, if I were planning to individually select locations for them, then individually measure and EQ them, I would probably use the Y-cable
(I would look at it as "I'm creating a single optimized subwoofer system... then I'm going to hand IT off to Dirac to integrate into the rest of my system.) Just beware of falling into the trap of overthinking and overworking the situation.... Different measurement methods will produce different results... so you could end up "going back and forth rather than narrowing in on one perfect result".
In general, when it comes to speakers and rooms, there isn't really a single "perfect best", and you can easily get lost down the rabbit hole of endlessly searching for it. I am fairly new to the Emotiva processor family and I see various places where this has been kicked around but I wanted to start its own unique thread. This evening I’m completing my system set up in a new home. I am using an RMC-1L and two SVS PB-3000 subs. I plan to use REW to finalize placement of the subs, speakers and room treatments. During this process I will use the three brand PEQ built into my subs for leveling peaks in the subwoofers response. Following this I will run Dirac and then fine tune the crossover points with REW. I’ve read so many differing opinions on whether to use a y adapter connecting both subs to a single output or use the LR discrete sub outputs. A few folks I know who have extensive experience with Dirac say use the summed method and earlier today Emotiva customer service said use discrete….. I can try both, but good lord it gets into so many sweeps and set up changes I thought I’d see if there is an overwhelming recommendation here. Lastly, I listen to most music in Reference Stereo so subs aren’t in play. However, I’m curious to see if I prefer stereo with Dirac engaged or even 2.2 versus just my LSiM 707s on their own. Also, I just admit somewhat coyly I am enjoying some music in Apple Atmos on my system so my surround set up is suddenly more critical than when I only watched movies using the entire speaker ensemble. I will run Dirac profiles for both open and sealed modes for the subs and for pure 2CH versus others references previously. I expect this to take a couple of weeks to finalize but I’d like to get started in one direction or another this evening. Thank you. Thanks for the quick reply Keith. I do understand your response and also I am a king over-thinker. I believe I will y-them and at least measure for in-room locations, volume match the two, EQ and then let Dirac do the rest. Oddly my center sub channel doesn’t have LFE as an option but that could be because I don’t have anything in the LR sub outputs. I suppose it doesn’t really matter which output I use? Looking forward to getting this set up, two channel listening even at this stage is fantastic. |
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Post by 405x5 on Sept 2, 2021 8:00:05 GMT -5
When it comes to subwoofers everybody has an opinion... and many of them are equally valid. I would personally say that: - If I was going to let Dirac do all the work I would use the separate Left and Right sub outputs (different subs, at different locations, will call for different adjustments). - BUT, if I were planning to individually select locations for them, then individually measure and EQ them, I would probably use the Y-cable
(I would look at it as "I'm creating a single optimized subwoofer system... then I'm going to hand IT off to Dirac to integrate into the rest of my system.) Just beware of falling into the trap of overthinking and overworking the situation.... Different measurement methods will produce different results... so you could end up "going back and forth rather than narrowing in on one perfect result".
In general, when it comes to speakers and rooms, there isn't really a single "perfect best", and you can easily get lost down the rabbit hole of endlessly searching for it. Thanks for the quick reply Keith. I do understand your response and also I am a king over-thinker. I believe I will y-them and at least measure for in-room locations, volume match the two, EQ and then let Dirac do the rest. Oddly my center sub channel doesn’t have LFE as an option but that could be because I don’t have anything in the LR sub outputs. I suppose it doesn’t really matter which output I use? Looking forward to getting this set up, two channel listening even at this stage is fantastic. I’m the ultimate “under thinker”!….done once, then the vacuum and Dust Off are my best friends |
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Post by Boomzilla on Sept 2, 2021 21:28:10 GMT -5
What happens when you send a mono channel to multiple subs and then equalize using Dirac or another room correction software?
When one of the subs has a dip due to room cancellations, the other sub(s) are equalized to play more loudly to compensate. So at all times, you have the different subs playing at different volumes in an attempt to provide a flat response at the listening position. Since sub frequencies are non-directional to your ears, who cares?
However, if you equalize the subs individually for the flattest response at the listening position, then the EQ program will do its best to tame peaks, but the dips will still be there. Therefore, the combined output of the multiple subs will ultimately be less flat at the listening position than if you'd equalized them with a single signal driving both simultaneously.
In other words, a single feed signal allows the EQ program to let one sub cover for the other's shortcomings. But if you EQ them individually, the response won't allow such compensation.
Therefore, at least theoretically, a mono sub feed (following equalization) will provide the smoother in-room response.
Boomzilla
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