Official Rythmik Audio Subwoofer thread - Page 658 - AVS Forum | Home Theater Discussions And Reviews
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post #19711 of 27835 Old 07-09-2015, 03:32 PM
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In Jupiter there is a good shoutout around 1hr 10 mins, all the weapon fires are super punchy and I felt them bumping me in the sides in my chair. End of that scene there is a big time LFE in the corn field, and once again not much feeling from it granted it gives you an odd feeling but it's different from bass punch. During that the drivers moving a lot and there was a little chuffing.

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post #19712 of 27835 Old 07-09-2015, 03:50 PM
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I must be doing something wrong. Watching The Dark Knight and Im getting about the same amount of bass, as i did with svs pb-2000. I guess ill try the sub crawl again and redo audyssey.

I was expecting much much more than the PB-2000.

I dont know if these could be why? But my situp is in the middle of the long portion of the wall.

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post #19713 of 27835 Old 07-09-2015, 03:55 PM
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Quote:
Originally Posted by gadgtfreek View Post
sterile bass
I've been calling it gritty, tactile, detailed, and room rumbling. I think all of those descriptors get "smoothed" over with the low setting. I don't feel the floor vibrating when the ships in Pirates are taking a pounding on low, though the bass does sound louder or in higher quantity. High does make me want to turn up the sub levels by +2-3 over low, but when I do, it's so satisfying.

I haven't watched a lot of movies yet, but that's how I'm feeling so far. And with music, high is an easy choice because the whole system just blends together so well.
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post #19714 of 27835 Old 07-09-2015, 03:59 PM
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Quote:
Originally Posted by dc6284 View Post
I must be doing something wrong. Watching The Dark Knight and Im getting about the same amount of bass, as i did with svs pb-2000. I guess ill try the sub crawl again and redo audyssey.

I was expecting much much more than the PB-2000.

I dont know if these could be why? But my situp is in the middle of the long portion of the wall.
What levels did your AVR set the sub to? Did you increase it from there and notice any difference?

It's very possible that you have some bass issues in your room and all the subs in the world won't help. How much flexibility do you have to move things? Show us a picture of your setup.
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post #19715 of 27835 Old 07-09-2015, 03:59 PM
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I agree, the more "full" HT type bass does seem louder on the ear. It's good owners have such choices, I can see this one easily depending on the user. I think a higher Q for HT and a lower Q for music is a good recommendation, but obviously not for everyone.

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post #19716 of 27835 Old 07-09-2015, 04:12 PM
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Quote:
Originally Posted by dc6284 View Post
I must be doing something wrong. Watching The Dark Knight and Im getting about the same amount of bass, as i did with svs pb-2000. I guess ill try the sub crawl again and redo audyssey.

I was expecting much much more than the PB-2000.

I dont know if these could be why? But my situp is in the middle of the long portion of the wall.
If you've already followed Soulburner's original response, then try these settings in your AVR (4520):

1. Enable Dynamic EQ (DEQ). Later, adjust RLO to taste.
2. DISABLE Dynamic Volume (DVol).
3. DISABLE Low Frequency Containment (LFC).
4. Set LPF of LFE to 120Hz.

The long version is in the linked document in my sig.

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post #19717 of 27835 Old 07-09-2015, 04:13 PM
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That sequence pressurizes my room and makes my door rattle.. My space is smaller and I have 3 FVs. The distortion obviously does not pass cea 2010..

Quote:
Originally Posted by bear123 View Post
That pretty much tells you how effective 10 Hz is in your room. I'd say that is the case for most people.

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post #19718 of 27835 Old 07-09-2015, 04:21 PM
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Quote:
Originally Posted by dc6284 View Post
I must be doing something wrong. Watching The Dark Knight and Im getting about the same amount of bass, as i did with svs pb-2000. I guess ill try the sub crawl again and redo audyssey.

I was expecting much much more than the PB-2000.

I dont know if these could be why? But my situp is in the middle of the long portion of the wall.
How loud are you listening? The PB2000 has an exceptionally strong response down to the mid teens. If you are not listening at a volume louder than the PB2000's output capability, there probably won't be a huge difference. I.E. at say, -15 from reference, you likely won't notice much difference unless you are running quite hot. IMO.
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post #19719 of 27835 Old 07-09-2015, 04:24 PM
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Quote:
Originally Posted by ahmedreda View Post
That sequence pressurizes my room and makes my door rattle.. My space is smaller and I have 3 FVs. The distortion obviously does not pass cea 2010..
Do you feel the effects of the 10 Hz tone? And do you think it is the 10 Hz tone causing the effects you are getting or do you feel it might be at a high enough level that the distortion is more prevalent than the fundamental? In which case it is the 20, 30Hz etc harmonics you notice?

I have not played the scene at reference level, but at say, -10, the 10Hz provides almost no noticeable effect in my room. 15Hz is noticeable, but 20 and 25 is much more so.
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post #19720 of 27835 Old 07-09-2015, 04:28 PM
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I listen at reference for movies. I just tried the sub crawl again and found a better spot by the corner off the wall, but its like 7 feet away from my left front speaker. Is that ok? Or to far away. That would make the sub about 13 feet from the listening position.

Avr: Denon 4520
Speakers: Klipsch,rf-82ii,rc-62ii,b-61ii,rs-62ii
Sub: Rythmik Fv15hp'se
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post #19721 of 27835 Old 07-09-2015, 04:42 PM
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Quote:
Originally Posted by ahmedreda View Post
That sequence pressurizes my room and makes my door rattle.. My space is smaller and I have 3 FVs. The distortion obviously does not pass cea 2010..
I get a sensation when the low stuff is going on, I also know because one picture on the wall rattles and so does the fireplace. The sensation is hard to describe, but you know something is going on just don't really feel it kicking the chair.

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post #19722 of 27835 Old 07-09-2015, 04:45 PM
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I played that scene at around -13 or so with the subs 4-5 db hot. It felt like the room was pressurized so I don't believe it is the harmonics but I am not sure. What is the highest spl @10 hz you can get ?


Quote:
Originally Posted by bear123 View Post
Do you feel the effects of the 10 Hz tone? And do you think it is the 10 Hz tone causing the effects you are getting or do you feel it might be at a high enough level that the distortion is more prevalent than the fundamental? In which case it is the 20, 30Hz etc harmonics you notice?

I have not played the scene at reference level, but at say, -10, the 10Hz provides almost no noticeable effect in my room. 15Hz is noticeable, but 20 and 25 is much more so.

My home theater
Speakers: 3 JTR 212HTR (LCR), 2 Jtr Single 8LP (S), 2 JTR Triple 12LF (SB)) , 4 Volt 10LX (Atmos)
Subwoofers: 10 Sealed UXL-18, 5 Crowson Shadow 8 transducers, 3 Buttkicker LFE
Display: JVC RS400
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post #19723 of 27835 Old 07-09-2015, 04:48 PM
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Originally Posted by dc6284 View Post
I listen at reference for movies. I just tried the sub crawl again and found a better spot by the corner off the wall, but its like 7 feet away from my left front speaker. Is that ok? Or to far away. That would make the sub about 13 feet from the listening position.
The goal is to put the sub at the point that works best for the MLP. I assume you are putting the sub at the MLP and then moving around the room to find the best spot?

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post #19724 of 27835 Old 07-09-2015, 04:58 PM
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Originally Posted by gadgtfreek View Post
The goal is to put the sub at the point that works best for the MLP. I assume you are putting the sub at the MLP and then moving around the room to find the best spot?
Yes...

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post #19725 of 27835 Old 07-09-2015, 05:09 PM
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Quote:
Originally Posted by ahmedreda View Post
I played that scene at around -13 or so with the subs 4-5 db hot. It felt like the room was pressurized so I don't believe it is the harmonics but I am not sure. What is the highest spl @10 hz you can get ?
I can get slightly above reference with a sine wave sweep. So with real content it should be a touch higher I'd say.
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post #19726 of 27835 Old 07-09-2015, 06:14 PM
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Didn't get time for pod race test, so I pulled that movie and bayformers out for some loud testing tomorrow. Time for burgers on the grill, applewood smoked bacon and a few cold brews.
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post #19727 of 27835 Old 07-09-2015, 08:28 PM
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Quote:
Originally Posted by gadgtfreek View Post
Just reran audyssey with these, going to watch a couple of action flicks now.




The volume on the sub is very low, why is that? is it just the starting point or is there some advance stuff going on.

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post #19728 of 27835 Old 07-09-2015, 08:33 PM
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Nope, no shenanigans

I am running two for one thing, but their levels are set independently with XT32 before I run auto EQ. That one is the sub that is near the part of the room that opens up into kitchen and dining areas. The sub on the other side that obviously gains from the room is about two clicks lower than that.
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post #19729 of 27835 Old 07-09-2015, 08:42 PM
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Originally Posted by gadgtfreek View Post
Nope, no shenanigans

I am running two for one thing, but their levels are set independently with XT32 before I run auto EQ. That one is the sub that is near the part of the room that opens up into kitchen and dining areas. The sub on the other side that obviously gains from the room is about two clicks lower than that.
Ok awesome

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post #19730 of 27835 Old 07-09-2015, 08:56 PM
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That's around the same level my F12s are set to. The recommendation is to start at 12:00 and adjust until you hit 75db at MLP. I found 74db to be about right for me to get the right sub levels.

For me, 12:00 resulted in 78-79db and the AVR ran out of adjustment of the sub level at -12.

Last edited by Soulburner; 07-09-2015 at 09:00 PM.
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post #19731 of 27835 Old 07-09-2015, 08:58 PM
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Yeah, each one of mine is about 74-75, and then when combined they end up -9 and -10.5, which works out great.

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post #19732 of 27835 Old 07-10-2015, 12:49 AM
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Quote:
Originally Posted by dc6284 View Post
I listen at reference for movies. I just tried the sub crawl again and found a better spot by the corner off the wall, but its like 7 feet away from my left front speaker. Is that ok? Or to far away. That would make the sub about 13 feet from the listening position.
Hi dc6284,

The purpose of the sub crawl test is to help determine the best locations for the sub based on the physical Main Listening Position (MLP). If you've identified a few locations, try out the one that sounds the best to you first. You can then try the next location, or use it for the 2nd Rythmik sub that will coming along in the future. Unfortunately this is an iterative process in finding the smoothest bass response at the MLP. The general idea is to get good seat to seat consistency so that room equalization can smooth things out.

Audyssey XT32 with sub EQ HT does a great job of applying correction filters in the bass region. If you can do the before and after in room measurements, you will be pleasantly surprised on the Audyssey corrected frequency response from say 15Hz to 300Hz.

Edit: When you carried out the Audyssey auto-calibration, did you try the tight mic pattern with the 1st position at the center of the head and at the MLP? Audyssey results will vary if mic pattern is wide (i.e. over a 6 seat sofa) vs. tight (i.e. single chair) so it's important to decide which is important.

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Last edited by steveting99; 07-10-2015 at 12:54 AM. Reason: additional text for clarity.
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post #19733 of 27835 Old 07-10-2015, 06:36 AM
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Quote:
Originally Posted by ahmedreda View Post
That sequence pressurizes my room and makes my door rattle.. My space is smaller and I have 3 FVs. The distortion obviously does not pass cea 2010..
You almost had 5 FV's...
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post #19734 of 27835 Old 07-10-2015, 07:59 AM
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Originally Posted by tvuong View Post
Is the L22 dual opposed design or like a bigger F8?
In the likely event that Rythmik never offers a dual-opposed sub, you can easily buy the DIY kit that Rythmik offers which contains the components you need (the A370 plate amp and a pair of the paper-coned 12" woofers) and have a dual-opposed enclosure made locally by a cabinet maker.
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post #19735 of 27835 Old 07-10-2015, 08:06 AM
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Originally Posted by eorr23 View Post
Yeah I considered the DB1 but it's like $4000 which is waaay more than I want to spend when I assume two F12SE's would sound better for half the cost.
Plus in Austin we are all about supporting local business!

I definitely sensed the feeling of community the times I've been in Austin (both for SXSW, and to visit my old pals in The Cornell Hurd Band, Austin's Western Swing/Hard Country band). Same thing in Portland Oregon, where "Keep Portland Weird" signs are plastered all over town!
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post #19736 of 27835 Old 07-10-2015, 09:54 AM
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Hi everyone,

I was hoping to get some insight on using a F12SE in a stereo setup without an AVR. I have never owned a subwoofer before and I am ignorant to all the tricks to properly integrating a subwoofer in a setup without an AVR. Currently I utilize my setup for 70% Music, 20% video games, and 10% movies. Unforunately I am in an apartment so I will not be able to use the full potential but I am not looking for crazy output anyways. Ultimately I would like the subwoofer to extend my frequency response below 35hz and ease the load off of my speakers.

Equipment list:
Speakers: Bowers & Wilkins 803d
Preamp: Emotiva XSP-1 Gen 2
Amp: Emotiva XPA-2 Gen 2
Bluray/DAC: Oppo 105
Turntable: Project 2Xperience Classic
Surgeprotector: Panamax M5300-PM

Once a subwoofer is purchased are there in steps you would recommend to ensure the best SQ possible for a stereo setup?
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post #19737 of 27835 Old 07-10-2015, 10:46 AM
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Quote:
Originally Posted by eorr23 View Post
hi everyone,

i was hoping to get some insight on using a f12se in a stereo setup without an avr. I have never owned a subwoofer before and i am ignorant to all the tricks to properly integrating a subwoofer in a setup without an avr. Currently i utilize my setup for 70% music, 20% video games, and 10% movies. Unforunately i am in an apartment so i will not be able to use the full potential but i am not looking for crazy output anyways. Ultimately i would like the subwoofer to extend my frequency response below 35hz and ease the load off of my speakers.

Equipment list:
Speakers: bowers & wilkins 803d
preamp: emotiva xsp-1 gen 2
amp: emotiva xpa-2 gen 2
bluray/dac: oppo 105
turntable: project 2xperience classic
surgeprotector: panamax m5300-pm

once a subwoofer is purchased are there in steps you would recommend to ensure the best sq possible for a stereo setup?
document.pdf

Receiver - Sony STR-DH550
Fronts - Klipsch Reference Premiere RP-280F
Center
- Klipsch Reference Premiere RP-450C
Surrounds - Don't ask lol
Sub - Rythmik FV15HP
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post #19738 of 27835 Old 07-10-2015, 01:03 PM
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Excellent doc from my brief look!

The XSP-1 has outputs for stereo (left and right) or a single (summed) subwoofer so you are good to go.

A friend of mine has 803D's and a pair of subs. Definitely helps.

"After silence, that which best expresses the inexpressible, is music" - Aldous Huxley
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post #19739 of 27835 Old 07-10-2015, 04:04 PM
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Quote:
Originally Posted by eorr23 View Post
Hi everyone,

I was hoping to get some insight on using a F12SE in a stereo setup without an AVR. I have never owned a subwoofer before and I am ignorant to all the tricks to properly integrating a subwoofer in a setup without an AVR. Currently I utilize my setup for 70% Music, 20% video games, and 10% movies. Unforunately I am in an apartment so I will not be able to use the full potential but I am not looking for crazy output anyways. Ultimately I would like the subwoofer to extend my frequency response below 35hz and ease the load off of my speakers.

Equipment list:
Speakers: Bowers & Wilkins 803d
Preamp: Emotiva XSP-1 Gen 2
Amp: Emotiva XPA-2 Gen 2
Bluray/DAC: Oppo 105
Turntable: Project 2Xperience Classic
Surgeprotector: Panamax M5300-PM

Once a subwoofer is purchased are there in steps you would recommend to ensure the best SQ possible for a stereo setup?

I got the F15 / PEQ A370 amp for music duties and WAS connected via the speaker level inputs, it was partnered with an Usher 719, a large 40 pound bookshelf speaker with a 7 inch woofer. Awesome combo . Eventually I got a tv and decided to watch movies and what I noticed was that the bookshelf woofer was really getting a lot of exercise during explosions and such. Luckily for me the A370 has an HPF filter, I was able to remove the lower bass frequencies (80hz) from the bookshelf speaker by sending the pre-out to the sub and then feed the filtered signal to the power amp.

If your not playing at loud levels. speaker level inputs would be ok, just watch out for 803 during loud passages and when using the system for games...
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post #19740 of 27835 Old 07-10-2015, 08:09 PM
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As stated above, the Emotiva XSP-1 preamp has subwoofer outputs, both stereo (L/R) and summed mono... He doesn't need to use speaker level inputs. The XSP-1 also has a crossover built-in.

"After silence, that which best expresses the inexpressible, is music" - Aldous Huxley
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Reply Subwoofers, Bass, and Transducers

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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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