Sierra 2EX V2 Subwoofer Integration Question

[choirbass]

The 80Hz THX standard for movies is much too high IMO. Yes 40Hz is half that. Just read this but 40Hz is good for brain therapy.

As far as sub xover preference. i'm just largely going on youtube personalities like Paul McGowan
of PS Audio

Yes, this hobby. It's my life. As far as why I don't have newer than the S2, it's due to parental restrictions. Scratch that, I have a pair of Lunas that I purchased a few years ago. They were being used until just recently. Turning my 2 ch dac into a 4 ch dac with the use of pro logic was more of an eye opener

[N Boros]

The 80Hz THX standard for movies is much too high IMO. Yes 40Hz is half that. Just read this but 40Hz is good for brain therapy.

As far as sub xover preference. i'm just largely going on youtube personalities like Paul McGowan
of PS Audio

Yes, this hobby. It's my life. As far as why I don't have newer than the S2, it's due to parental restrictions. Scratch that, I have a pair of Lunas that I purchased a few years ago. They were being used until just recently. Turning my 2 ch dac into a 4 ch dac with the use of pro logic was more of an eye opener

I know when I had a single Outlaw Audio subwoofer, I felt like it couldn’t keep up with my Sierra 2s in the 50 to 80Hz region. In other words, when lowering the crossover from 80 Hz to 50Hz I could hear more detail in that region with material that I was familiar with. I also noticed a slight bit of localization that you discussed with an 80Hz crossover, with some material. In my case I am primarily using my system for movies and TV, where a 50Hz crossover is too low for LFE effects. I was nervous about damaging the woofer.

After upgrading to a pair of Rythmik Fv15HPs, that I place across the room from each other to help cancel out any big peaks or dips, both concerns have been fixed. Bass is not localizable in any seat in the room. Bass is pretty consistent in any seat in the room. I can use an 80Hz crossover or a 50Hz crossover and I hear the same detail in that 50 to 80Hz range. The advantage of letting the subs handle the 50 to 80Hz range is that they can do it much much better, because I can now turn up the volume dial as loud as I can stand without worrying about damaging the Sierra 2s woofers if their is a big LFE effect. In fact the Sierra 2s are probably the bottleneck for how loud the system can get, but it is more than enough for me. I don’t go more than -15dB.

I see you have one L12 sub. Maybe try another placed across the room from the first one. I bet it will fix any localization issues if you use a higher crossover.

[choirbass]

Rooms too small to accommodate a second sub, don't think I'll be moving any higher than 40Hz on the xover anyhow.Tho a pair of stacked subs would work regarding space limitations. The reality however is that all of my HI-FI purchasing is on hold for the foreseeable future

[choirbass]

https://youtu.be/X-yIjCx92iQ?si=95XJbbi21qMotFc8

heres one video on youtube explaining how to set a sub xover frequency

[curtis]

I know when I had a single Outlaw Audio subwoofer, I felt like it couldn’t keep up with my Sierra 2s in the 50 to 80Hz region. In other words, when lowering the crossover from 80 Hz to 50Hz I could hear more detail in that region with material that I was familiar with. I also noticed a slight bit of localization that you discussed with an 80Hz crossover, with some material. In my case I am primarily using my system for movies and TV, where a 50Hz crossover is too low for LFE effects. I was nervous about damaging the woofer.

After upgrading to a pair of Rythmik Fv15HPs, that I place across the room from each other to help cancel out any big peaks or dips, both concerns have been fixed. Bass is not localizable in any seat in the room. Bass is pretty consistent in any seat in the room. I can use an 80Hz crossover or a 50Hz crossover and I hear the same detail in that 50 to 80Hz range. The advantage of letting the subs handle the 50 to 80Hz range is that they can do it much much better, because I can now turn up the volume dial as loud as I can stand without worrying about damaging the Sierra 2s woofers if their is a big LFE effect. In fact the Sierra 2s are probably the bottleneck for how loud the system can get, but it is more than enough for me. I don’t go more than -15dB.

I see you have one L12 sub. Maybe try another placed across the room from the first one. I bet it will fix any localization issues if you use a higher crossover.

This is pretty much the same scenario I had with a Hsu subwoofer (Hsu designed the Outlaw sub) and my Sierra 2's. When I changed to Rythmik F15, I could easily raise the crossover point with no discernable difference in sound.

Now, to the LX, I heard a difference between 60hz and 80hz crossover points. At 80hz, the sound lost some of its punchiness (still not localizable thought), at 60hz the punchiness was back.

[curtis]

https://youtu.be/X-yIjCx92iQ?si=95XJbbi21qMotFc8

heres one video on youtube explaining how to set a sub xover frequency

He leaves out some critical steps.

What level do you set the subwoofer and how do you set it.

He also doesn't talk about bass management. Is he sending a full range signal to the mains and just setting the crossover on the sub? Is he using bass management and high passing?

Some very important points in setting up a subwoofer.

[choirbass]

All I can say is he has quite a few videos, what he leaves out in one video he covers in a different video. Can only talk about so much for 5 minutes.