Official Rythmik Audio Subwoofer thread - Page 1335 - AVS Forum | Home Theater Discussions And Reviews
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post #40021 of 40114 Old 09-11-2019, 05:23 PM
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Originally Posted by Soulburner View Post
Are you really truly measuring at nearly 110 dB?

Re-measure at 75 dB and re-post. Also, turn on the multi-color view for the waterfall. I forget what it's called.
Well, one of the docs I was following said for the Waterfall graph to measure at 100dB (or, actually 60db above floor noise)... so, I did... lol...

I'll remeasure at 75dB, figure out the multi-color view and will repost tomorrow... kids & wife are home now, so the place is a zoo now (literally)... any other graphs that would also be helpful?

Thanks again!

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post #40022 of 40114 Old 09-11-2019, 05:29 PM
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Originally Posted by darrob104 View Post
Well, one of the docs I was following said for the Waterfall graph to measure at 100dB (or, actually 60db above floor noise)... so, I did... lol...

I'll remeasure at 75dB, figure out the multi-color view and will repost tomorrow... kids & wife are home now, so the place is a zoo now (literally)... any other graphs that would also be helpful?

Thanks again!
Take a measurement of LFE Channel only to see the frequency response.
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post #40023 of 40114 Old 09-11-2019, 06:44 PM
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Originally Posted by JimWilson View Post
It's better you didn't. Had you been caught nosing around Enrico might have asked some of his Sicilian buddies to have a 'convasation which ya' about that.

And BTW, the L22 is a solid performer and great choice when you don't have the space for budget for one its bigger siblings.
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post #40024 of 40114 Old 09-12-2019, 04:57 AM
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Originally Posted by darrob104 View Post
After lots of reading, experimenting and (more than) a few failed attempts, I've finally configured my HT system such that I'm relatively happy with the bass for music (movies hasn't been the problem)... I'm now digging deeper into REW trying to understand what it's trying to tell me, with the hope that I can continue to make improvements.

I'm looking at the Waterfall graph... I believe I set it up properly, but am not 100% sure what it means... If you REW experts would be so kind as to give me some feedback, it would be most helpful... My system includes 2x FV-18 subs (additional system details are in my signature)...

Thanks in advance...
In addition to measuring at 75dB and HDMI ch4 (LFE channel), set time to 450ms, not 600ms.

Keep in mind LFE channel will play 10dB louder than the speaker channels in REW, so adjust volume on AVR to compensate.

Hope this helps
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post #40025 of 40114 Old 09-12-2019, 07:50 AM
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Updated Graphs....

the Waterfall graph is a bit over 75dB (like 78dB)... is that okay?
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post #40026 of 40114 Old 09-12-2019, 07:53 AM
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Quote:
Originally Posted by darrob104 View Post
Updated Graphs....

the Waterfall graph is a bit over 75dB (like 78dB)... is that okay?
Wow.... Amazing response down to 10Hz.
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post #40027 of 40114 Old 09-12-2019, 08:27 AM
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Originally Posted by darrob104 View Post
Updated Graphs....

the Waterfall graph is a bit over 75dB (like 78dB)... is that okay?
Im confused over master volume and mic sensitivity....

you really have mv at -10 and only 75db? also mic sensitivity at -40?. looks nice and flat, no smoothing correct? anyways, great response. now slap a curve on it.
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post #40028 of 40114 Old 09-12-2019, 08:40 AM
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Originally Posted by torii View Post
Im confused over master volume and mic sensitivity....

you really have mv at -10 and only 75db? also mic sensitivity at -40?. looks nice and flat, no smoothing correct? anyways, great response. now slap a curve on it.
Those are the settings I used to get the LFE signal down to 75dB... MV -10 & -40dBFS.... am I doing it right or is there a 'better' method for doing the measurements?

No smoothing (I believe)... not sure about the room curve, but I did set a PEQ on the MiniDSP to smooth out the low frequencies before running Audyssey...
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post #40029 of 40114 Old 09-12-2019, 09:22 AM
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Originally Posted by darrob104 View Post
Those are the settings I used to get the LFE signal down to 75dB... MV -10 & -40dBFS.... am I doing it right or is there a 'better' method for doing the measurements?

No smoothing (I believe)... not sure about the room curve, but I did set a PEQ on the MiniDSP to smooth out the low frequencies before running Audyssey...
well as long as you consistent I guess fine. -30mv usually gives me around 75db. and mic sensitivity I have default -18 or -12....forget.
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post #40030 of 40114 Old 09-12-2019, 10:59 AM
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Quote:
Originally Posted by darrob104 View Post
Updated Graphs....

the Waterfall graph is a bit over 75dB (like 78dB)... is that okay?
Perfect. Other than some resonances centered around 50 Hz, which could be electrical noise from a fan or something else, your waterfall shows a fast drop and an even response. I bet it sounds very articulate.

You're running the 24 dB slope?
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post #40031 of 40114 Old 09-12-2019, 11:56 AM
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Quote:
Originally Posted by Soulburner View Post

You're running the 24 dB slope?
Unfortunately, I don't actually know what you're referring to with regards to the 24 DB slope... I remember seeing something in the REW EQ settings, if that's what you're talking about... I believe I matched it to the documentation I was using, which was 24dB slope, if I recall correctly... I don't really understand the slope stuff yet... still putting the pieces of the puzzle together here... LOL!

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post #40032 of 40114 Old 09-12-2019, 12:09 PM
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Originally Posted by darrob104 View Post
Unfortunately, I don't actually know what you're referring to with regards to the 24 DB slope... I remember seeing something in the REW EQ settings, if that's what you're talking about... I believe I matched it to the documentation I was using, which was 24dB slope, if I recall correctly... I don't really understand the slope stuff yet... still putting the pieces of the puzzle together here... LOL!
It's a switch on the amp of your FV18s. I could be reading your chart wrong, though.
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post #40033 of 40114 Old 09-12-2019, 12:24 PM
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Originally Posted by Soulburner View Post
It's a switch on the amp of your FV18s. I could be reading your chart wrong, though.
The switch on the back of both subs is set to AVR/12... however, I'm running LFE inputs, so thought that bypassed those switches...

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post #40034 of 40114 Old 09-12-2019, 12:36 PM
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Originally Posted by Soulburner View Post
Perfect. Other than some resonances centered around 50 Hz, which could be electrical noise from a fan or something else...
As soon as you mentioned 'fans' I realized that maybe the fans running in my sons bedroom (next to the family room) may be causing these resonances at 50 Hz... turned them off and tested again... I'd say you were right....
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post #40035 of 40114 Old 09-12-2019, 12:46 PM
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As soon as you mentioned 'fans' I realized that maybe the fans running in my sons bedroom (next to the family room) may be causing these resonances at 50 Hz... turned them off and tested again... I'd say you were right....
It looks like you still have a constant hum remaining at 32 Hz and 50 Hz. Could be HVAC, refrigerator, etc. Either way, not likely issues with your system.
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post #40036 of 40114 Old 09-12-2019, 04:21 PM
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Have an FV18 (w/paper cone) on it's way and have two questions about setup after reading the install and amp guides:

1) I will be hooking the sub up with an XLR for LFE signal, so it will be plugged into the 'R Source In' XLR. Do I set 'Mode' to Normal or Dual?
2) Regarding the Rumble Filter, what is it doing? I will be running the sub in 2-port mode with 12Hz Extension and Low Damping (strictly HT use only). AVR is a Denon with MultEQ XT32. Should I always leave it off after running EQ?

Thanks!
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post #40037 of 40114 Old 09-12-2019, 06:15 PM
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Originally Posted by BigCoolJesus View Post
Have an FV18 (w/paper cone) on it's way and have two questions about setup after reading the install and amp guides:

1) I will be hooking the sub up with an XLR for LFE signal, so it will be plugged into the 'R Source In' XLR. Do I set 'Mode' to Normal or Dual?
2) Regarding the Rumble Filter, what is it doing? I will be running the sub in 2-port mode with 12Hz Extension and Low Damping (strictly HT use only). AVR is a Denon with MultEQ XT32. Should I always leave it off after running EQ?

Thanks!
First congratulation on your FV18

For plugging the XLR cable, I believe that either side will work and dual is not require. Most plate Amp do, and if Rythmik is an exception. Please correct me
As for the rumble filters, I do not know for sure. Since I have not order my dual FV18 yet. I will try to read those instruction tomorrow.


That said, is a very good read for general Sub/s set-up;
Guide to Subwoofer Calibration and Bass Preferences
While it is a long and very detail read, it is worth to read a few time to digest most of-it. After all a sub like your FV18 deserve-it, and so do you to get the most of-it


Darth

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post #40038 of 40114 Old 09-13-2019, 07:34 AM
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Originally Posted by darthray View Post
First congratulation on your FV18

For plugging the XLR cable, I believe that either side will work and dual is not require. Most plate Amp do, and if Rythmik is an exception. Please correct me
As for the rumble filters, I do not know for sure. Since I have not order my dual FV18 yet. I will try to read those instruction tomorrow.

That said, is a very good read for general Sub/s set-up;
Guide to Subwoofer Calibration and Bass Preferences
While it is a long and very detail read, it is worth to read a few time to digest most of-it. After all a sub like your FV18 deserve-it, and so do you to get the most of-it

Darth

Regarding the XLR, this is what the Rythmik guide says:
"Amplifier accepts two XLR inputs. The left XLR (for right channel) can be used as a 2 channel input or LFE input, controlled by the MODE switch. In NORMAL mode, the amplifier accepts up to two XLR regular signals with full phase/crossover/Lowpass controls. In DUAL mode, the left XLR is for an LFE signal whilst the right XLR is for a 2 channel source input"


Based on that, I would assume I should set the Mode to Dual. But just wanted to make sure
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post #40039 of 40114 Old 09-13-2019, 07:56 AM
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Originally Posted by BigCoolJesus View Post
Regarding the XLR, this is what the Rythmik guide says:
"Amplifier accepts two XLR inputs. The left XLR (for right channel) can be used as a 2 channel input or LFE input, controlled by the MODE switch. In NORMAL mode, the amplifier accepts up to two XLR regular signals with full phase/crossover/Lowpass controls. In DUAL mode, the left XLR is for an LFE signal whilst the right XLR is for a 2 channel source input"


Based on that, I would assume I should set the Mode to Dual. But just wanted to make sure
Yes, DUAL. As you can see it's also labeled on the amplifier: Red is DUAL and Blue is NORMAL.

PS: I put the color boxes so you know what I meant

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post #40040 of 40114 Old 09-13-2019, 08:43 AM
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Originally Posted by Soulburner View Post
It looks like you still have a constant hum remaining at 32 Hz and 50 Hz. Could be HVAC, refrigerator, etc. Either way, not likely issues with your system.
Thanks for your help with this... my system is sounding much better after, and gives me hope that there's a light at the end of the tunnel....

and thanks to all who gave me feedback! Much appreciated! I'll be out of town for a couple of days for a concert, so it'll be a 'REW Free' weekend....

Thanks again!
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post #40041 of 40114 Old 09-13-2019, 09:28 AM
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Hey guys, could use some advice, and hopefully I won't get made fun of for not considering the 18/22s that Rythmik has on offer.

I've got a media/family room which I prewired for two subs, partly with the thought towards going dual, but also just to minimize the distance I had to run RCA cable for a single. Due to the couch situation and the need for walkways and the ability to open cabinets, any subs I get will need to be confined to somewhere on the left wall (top on the image) or maybe partially along the back wall if it's still close to the corner.

I'm not a huge bass guy. I don't want my room rattling too much, and my 3-year old daughter sleeps directly behind the back wall. What I want is tight, accurate and musical bass (which is why Rythmik caught my eye!) for a 50:50 music/movies usage. My music isn't particularly bass heavy either, but I do listen to a lot of rock and heavy metal with powerful drums, etc.

My choices right now come down to two subs, the F12 and the E15. It's entirely possible that the F12 would be enough for me, but that's more for if I plan to go dual sub in the future (which given my space considerations may not even be worth it). I think it'd be hard to do two E15s, but I think one could pretty well service my needs in the room.

What would you guys recommend?
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post #40042 of 40114 Old 09-13-2019, 10:37 AM
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A pair of F12's would probably be fine given your room size and usage.

The bigger issue I see is sticking the main L/R/C speakers into that alcove/nook area on the right. That is going to cause all sorts of strange frequency bumps difficult to correct. I'd flip the layout to put the main speakers on the left, hang rears outside the alcove, and fill the alcove with shelving, perhaps with doors for a clean look. Gives you more storage and better sound.

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post #40043 of 40114 Old 09-13-2019, 11:17 AM
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A pair of F12's would probably be fine given your room size and usage.

The bigger issue I see is sticking the main L/R/C speakers into that alcove/nook area on the right. That is going to cause all sorts of strange frequency bumps difficult to correct. I'd flip the layout to put the main speakers on the left, hang rears outside the alcove, and fill the alcove with shelving, perhaps with doors for a clean look. Gives you more storage and better sound.
Should have been more clear. The room is built, the in-walls are installed and I have an 85" TV mounted in the alcove. I was a little worried about the LCR up front, but the room correction did a pretty decent job and the room sounds really good (I like my rooms on the "live" side). I've currently got an old 10" Klipsch sub that I'm replacing with a Rythmik. I'm going to start out getting one sub and go on from there when I can afford and if I need it.

Would your advice still be to start with a single F12 then and try to move to dual later or start bigger?
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post #40044 of 40114 Old 09-13-2019, 12:01 PM
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Should have been more clear. The room is built, the in-walls are installed and I have an 85" TV mounted in the alcove. I was a little worried about the LCR up front, but the room correction did a pretty decent job and the room sounds really good (I like my rooms on the "live" side). I've currently got an old 10" Klipsch sub that I'm replacing with a Rythmik. I'm going to start out getting one sub and go on from there when I can afford and if I need it.

Would your advice still be to start with a single F12 then and try to move to dual later or start bigger?
my advice is get 15 inch plus subs

Power: Marantz sr7008, NAD C 275Bee x 2, Video: Oppo 103, Samsung 75un6300
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post #40045 of 40114 Old 09-13-2019, 12:36 PM
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What I want is tight, accurate and musical bass (which is why Rythmik caught my eye!) for a 50:50 music/movies usage. My music isn't particularly bass heavy either, but I do listen to a lot of rock and heavy metal with powerful drums, etc.
Are you looking for tactile response in the form of "chest punch" to go along with your "powerful drums" or just articulation?

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post #40046 of 40114 Old 09-13-2019, 01:05 PM
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Are you looking for tactile response in the form of "chest punch" to go along with your "powerful drums" or just articulation?
Articulation is most important to me, but a little TR would definitely be nice too. I don't want it to feel quite like there's really a double kickdrum doing blastbeats in the room, but maybe part of the way there.

My little 10" Klipsch definitely isn't big enough for the room, but I don't have very many complaints about the sound during movies, even though there's essentially no TR. It's the non-musicality of it in 2.1 that bugs me the most.

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post #40047 of 40114 Old 09-13-2019, 01:51 PM
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My choices right now come down to two subs, the F12 and the E15.
What would you guys recommend?
Being in Austin, the answer is fairly easy, pick up both subs, set them up and listen for yourself for a few weeks. Decide for yourself which one to keep free of charge.
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post #40048 of 40114 Old 09-13-2019, 02:52 PM
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Being in Austin, the answer is fairly easy, pick up both subs, set them up and listen for yourself for a few weeks. Decide for yourself which one to keep free of charge.
I was going to ask if that might be an option. Might have to borrow a vehicle big enough to pick up both at the same time
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Will an FV18 (still in the box) fit into the side door of a standard size mini van if the seats are removed? Opted to pick my FV18 up from the UPS terminal when it arrives (only 15mins away)
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post #40050 of 40114 Old 09-13-2019, 03:10 PM
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I was going to ask if that might be an option. Might have to borrow a vehicle big enough to pick up both at the same time

It is definitely an option. I picked up my G25Hp and an LVX 12 from them on separate occasions. You have to talk to Brian about scheduling a time.

http://www.rythmikaudio.com/contact.html
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Home Theater 5.1 Setup: Marantz AV8805, Sunfire TGA-7401, Monitor Audio Gold GX300 Front/Rear, Monitor Audio Gold GXC 350 Center, Rythmik Audio G25HP, Oppo UDP-203, Samsung PN64F8500
PC Audio 5.1 Setup: Denon AVR-X3300W, Monitor Audio Gold GX100 Front/Rear, Monitor Audio Gold GXC 150 Center, Rythmik Audio F12SE
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