Official Rythmik Audio Subwoofer thread - Page 821 - AVS Forum | Home Theater Discussions And Reviews
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post #24601 of 24614 Old Today, 07:20 AM
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Quote:
Originally Posted by PlasmaPZ80U View Post
The low pass filter (crossover knob and lpf slope switch)

By the way, when you get REW you can do compression sweeps (carefully) and determine at what volume setting on the AVR the sub starts compressing at 20Hz.

Also, keep in mind that MCACC could be setting the sub a bit hot all on its own (YPAO sets mine 6-7 dB hot all on its own) AND that bass management adds to the LFE too. And the more speaker channels you have the more bass management is sent to the sub. All these things can make the sub play louder than it would otherwise.

So, how loud the sub plays is based on whether the sw trim is running hot and by how much, the number of bass managed speaker channels, and obviously the AVR master volume (MV).

And regarding bass management, if you don't use upmixing, 2.0 has 2 channels of bass management, 5.1 has 5, 7.1 has 7, etc.

So, a 5.1.signal will have the sub playing more softly than a 7.1 signal by a few dB.
Got it - I'm playing in 5.1 with PLIIz on to power the front heights - so 7 channels. Just got to the scene where they crash and he is floating under water. The sub made some not so nice sounds. Sounded low, so not clipping or anything, but possibly was just a frequency too low to hear. Besides that part and the one at the beginning, the sub has handled the movie wonderfully. The whole system sounded great. I'm at 55 now and im assuming this is close to reference as it is very loud - just below unpleasantly so haha.

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post #24602 of 24614 Old Today, 07:41 AM
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Originally Posted by PlasmaPZ80U View Post
So, a 5.1.signal will have the sub playing more softly than a 7.1 signal by a few dB.
First Ive heard that. You confirm that with REW?

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post #24603 of 24614 Unread Today, 08:02 AM
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Originally Posted by citsur86 View Post
So I have a big problem (I think). I popped in Edge of Tomorrow this morning since I heard it was a good movie to watch for the LFE. At the beginning, before the movie really started, there was a crazy sound that came out of the LV12R that did not sound right at all. When I got up to switch it over to High (it was on Low) i noticed it wasnt on, and it wont turn on - even when plugged in. If I put the switch to On or Auto, no lights. Any idea what happened here?
Woops. Might not wanna do that again.
Its a Rhythmik but its the entry level Rhythmik. Adjust your standards accordingly.
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post #24604 of 24614 Unread Today, 08:04 AM
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Originally Posted by Bond 007 View Post
Woops. Might not wanna do that again.
Its a Rhythmik but its the entry level Rhythmik. Adjust your standards accordingly.
Well I wasn't searching out that scene - just read that it was a good movie for LFE so decided to pop it in this morning. It's a bit scary that at the normal volume I listen to movies with my EQ as it is, there's a chance that some random scene in a movie could do that to the sub. Guess from now on before I watch a movie I will look it up online to see if there are any watch-out moments like that one. So far I've seen just Edge of Tomorrow and Django have Subwoofer killing parts. Any others off the top of anyones head they could think of?

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post #24605 of 24614 Unread Today, 08:07 AM
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Quote:
Originally Posted by citsur86 View Post
Well I wasn't searching out that scene - just read that it was a good movie for LFE so decided to pop it in this morning. It's a bit scary that at the normal volume I listen to movies with my EQ as it is, there's a chance that some random scene in a movie could do that to the sub. Guess from now on before I watch a movie I will look it up online to see if there are any watch-out moments like that one. So far I've seen just Edge of Tomorrow and Django have Subwoofer killing parts. Any others off the top of anyones head they could think of?
Theres no way thats the case.
Youre either listening way too loud or have the sub way too hot.
Ive had the LV12r for 6 years and have never had any problem.
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post #24606 of 24614 Unread Today, 08:10 AM
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Quote:
Originally Posted by Bond 007 View Post
Theres no way thats the case.
Youre either listening way too loud or have the sub way too hot.
Ive had the LV12r for 6 years and have never had any problem.
So I have the sub at +6db from what MCACC set it to, and I was listening probably a bit under reference. Is that not reasonable? Also the more I've read about this this morning, the more I see its rare and only present in a handful of movies. Have you watched Edge of Tomorrow with your normal settings? No issues?

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post #24607 of 24614 Unread Today, 08:23 AM
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Quote:
Originally Posted by citsur86 View Post
Well I wasn't searching out that scene - just read that it was a good movie for LFE so decided to pop it in this morning. It's a bit scary that at the normal volume I listen to movies with my EQ as it is, there's a chance that some random scene in a movie could do that to the sub. Guess from now on before I watch a movie I will look it up online to see if there are any watch-out moments like that one. So far I've seen just Edge of Tomorrow and Django have Subwoofer killing parts. Any others off the top of anyones head they could think of?


The rescue scene in Lone Survivor, The pod scene in War of the Worlds, the dragon fight (10hz) in How to Train your Dragon, check out the master thread of low bass scenes for much more.


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post #24608 of 24614 Unread Today, 08:48 AM
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Quote:
Originally Posted by Bond 007 View Post
Quote:
Originally Posted by PlasmaPZ80U View Post
So, a 5.1.signal will have the sub playing more softly than a 7.1 signal by a few dB.
First Ive heard that. You confirm that with REW?
Well, REW hdmi channel 4 is just LFE. It doesn't include the usual 5 or 7 bass managed speaker channels.

I've read this in many places AVS and other, including the Audyssey thread, I believe.

Also, he should make sure that MCACC is not setting the sub hot like YPAO is in my case... I use to think I liked running the sub 3-4dB hot but in reality it was 3-4dB plus 6-7dB hot: up to 11dB hot! And that is with a flat sub frequency response, not a house curve.

I now just leave it where YPAO sets it (6-7dB hot). It integrates alot better at these more reasonable levels.

I also discovered that by lowering all my speaker and the sub trim (via offsets) so the lowest channel is -10.0dB, I can set my sub gain much lower than if relying on YPAO alone (keeping sub trim just under 0). And this interestingly enough gets the speakers playing 75dB with the AVR manual test tones at 0MV. Basically, like if I had an AVR with Audyssey.
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post #24609 of 24614 Unread Today, 08:56 AM
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Quote:
Originally Posted by citsur86 View Post
Quote:
Originally Posted by Bond 007 View Post
Theres no way thats the case.
Youre either listening way too loud or have the sub way too hot.
Ive had the LV12r for 6 years and have never had any problem.
So I have the sub at +6db from what MCACC set it to, and I was listening probably a bit under reference. Is that not reasonable? Also the more I've read about this this morning, the more I see its rare and only present in a handful of movies. Have you watched Edge of Tomorrow with your normal settings? No issues?
Odds are the size of your room plus your listening levels with sub 6dB hot made the sub exceed it's output limits down low.

REW will let you see what's going on and how loud you can get in your room without issues but you might need more subwoofer(s) if you want to continue listening at your present levels.

You also can check in REW that MCACC isn't already running things hot on its own or that it's boosting the sub too much, especially the low end.
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post #24610 of 24614 Unread Today, 09:53 AM
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I just did some compression sweeps to point of minor compression at 20Hz:

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UN46EH6030 Calibration/Settings
Samsung UN46EH6030; Yamaha HTR-3066, SVS Prime Bookshelf Mains and Prime Center, Rythmik LV12R; PS4, Xbox One, Motorola RNG150N

Last edited by PlasmaPZ80U; Today at 09:59 AM.
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post #24611 of 24614 Unread Today, 10:06 AM
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Originally Posted by citsur86 View Post
Figured it out. The fuse under where the power cord is plugged in (found the pull out compartment) was blown. Luckily you good folks not only protected the sub from destroying itself, but you also provided an extra fuse within the pull out chamber. Fixed it. Recalibrating using MCACC now and I'll leave the sub at -6 for the duration of the movie. Crossover is 80hz for all speakers. Cheers!
You might want to keep an eye on that. Even if you did overdrive/overheat the sub I would think the thermal circuit should have shut it down before the fuse popped. That's uncommon, at least in my experience anyway.

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post #24612 of 24614 Unread Today, 10:28 AM
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You might want to keep an eye on that. Even if you did overdrive/overheat the sub I would think the thermal circuit should have shut it down before the fuse popped. That's uncommon, at least in my experience anyway.


Strange. I didn't do anything strange just plugged into LFE like normal.

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post #24613 of 24614 Unread Today, 10:39 AM
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Quote:
Originally Posted by citsur86 View Post
So I have a big problem (I think). I popped in Edge of Tomorrow this morning since I heard it was a good movie to watch for the LFE. At the beginning, before the movie really started, there was a crazy sound that came out of the LV12R that did not sound right at all. When I got up to switch it over to High (it was on Low) i noticed it wasnt on, and it wont turn on - even when plugged in. If I put the switch to On or Auto, no lights. Any idea what happened here?
Very well known sub killer scene. The rest of the movie doesn't even have much bass, just the out-of-place tones during the intro.

Edge of Tomorrow... careful guys!

Edge of Tomorrow - Is My SW Broken?

Edge of Tomorrow intro
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post #24614 of 24614 Unread Today, 10:40 AM
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Very well known sub killer scene. The rest of the movie doesn't even have much bass, just the out-of-place tones during the intro.



Edge of Tomorrow... careful guys!



Edge of Tomorrow - Is My SW Broken?



Edge of Tomorrow intro


Wow i don't understand why they would put that into the movies sound mix! Lucky for me the fuse blew and sub is fine after having replaced it.

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==============================

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==============================
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f12g subwoofer , lv12r , Rythmik , Rythmik Audio , Rythmik Audio F12 Direct Servo Subwoofer , Rythmik Audio F15 Subwoofer , servo sub



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