Official Rythmik Audio Subwoofer thread - Page 676 - AVS Forum | Home Theater Discussions And Reviews

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post #20251 of 27131 Old 08-31-2015, 08:57 PM
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Here is my latest compression sweep for the subs only.. There is a dip/null around 80 hertz that goes away when I use the speakers.. I recently added a 4th FV15HP that I got at a decent price.

For the last sweep, I started at 20hertz since it was already compressed below that.
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My home theater
Speakers: 3 JTR 212HTR (LCR), 2 Jtr Single 8LP (S), 2 JTR Triple 12LF (SB)) , 4 Volt 10LX (Atmos)
Subwoofers: 4 Rythmik FV15HP , 5 Crowson Shadow 8 transducers, 3 Buttkicker LFE
Display: JVC RS400
FS: 4xRythmik FV15HP
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post #20252 of 27131 Old 08-31-2015, 09:04 PM
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Quote:
Originally Posted by rak306 View Post
Does anyone know where to get a premade cable that will plug into the female mini-XLR input of the Rythmik compact amplifier series?

An standard XLR female to male mini-XLR adapter cable would be ideal.

Thanks
You can use this one: http://www.bhphotovideo.com/bnh/cont...=REG&A=details

Or buy the 3 Pin Mini XLR Male Connector and a standard XLR female and build your own cable.

http://www.seismicaudiospeakers.com/...FQEcaQodc5kFwQ

http://www.bhphotovideo.com/bnh/cont...Y&A=details&Q=

http://www.amazon.com/Neutrik-NC3FX-...male+connector



Enrico Castagnetti @ Rythmik Audio
Media Room: Polk LSiM705s, LSiM706C, LSiM703s | Rythmik F12SE (x2) | Marantz SR7008 | Parasound Halo P5 | Emotiva XPA-3 & XPA-200 | Oppo 105D | Sony HW40ES |
Desktop: Dynaudio BM5 mkIII | Rythmik L22 | Apogee Quartet + Duet | 27" iMac|
Bedroom: B&W 685 S2 | Rythmik LVX12 | Marantz NR1606 | Emotiva XPA-200 Gen 2 | Samsung UN50JU6500 |

Last edited by enricoclaudio; 08-31-2015 at 09:07 PM.
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post #20253 of 27131 Old 08-31-2015, 09:22 PM
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Quote:
Originally Posted by ahmedreda View Post
Here is my latest compression sweep for the subs only.. There is a dip/null around 80 hertz that goes away when I use the speakers.. I recently added a 4th FV15HP that I got at a decent price.

For the last sweep, I started at 20hertz since it was already compressed below that.
4 FVs - super nice. Are they each in a corner of your room? Have updated pix? Can you scale your horizontal to 8-200hz? I assume each higher graph was increased by 5db?

Last edited by tvuong; 08-31-2015 at 09:26 PM.
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post #20254 of 27131 Old 08-31-2015, 09:51 PM
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Quote:
Originally Posted by tvuong View Post
4 FVs - super nice. Are they each in a corner of your room? Have updated pix? Can you scale your horizontal to 8-200hz? I assume each higher graph was increased by 5db?
No I have 2 in the front and 2 stacked in the back.. Yes the last graph was increased by 5 db.. I recaptured the graph with better scaling..


Compression sweeps with better scale:


Here is how I set them up for those interested:
Here are the front 2 and their sum:


Here are the back 2 and their sum:


Here is the front 2 , the back 2 and all 4:

Notice that the sum of the front 2 and the back 2 is less than the back 2 alone after 50 hertz..

I added a LPF for the front subs to cancel their output above 50 hertz.

Here is the back subs and the front subs with the LPF and their sum:


Looks better than when the fronts were active above 50hz. It seems to me that I can use the output of the front subs between 70 and 80 to help get rid of the 10 db dip since there doesn't seem to be a cancellation there.

Before and after eq




I haven't taken pictures yet but planning to take some soon.
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My home theater
Speakers: 3 JTR 212HTR (LCR), 2 Jtr Single 8LP (S), 2 JTR Triple 12LF (SB)) , 4 Volt 10LX (Atmos)
Subwoofers: 4 Rythmik FV15HP , 5 Crowson Shadow 8 transducers, 3 Buttkicker LFE
Display: JVC RS400
FS: 4xRythmik FV15HP

Last edited by ahmedreda; 09-01-2015 at 07:23 AM.
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post #20255 of 27131 Old 09-01-2015, 08:01 AM
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@ahmedreda ,
Graphs look great!
How does it sound?

Did you also try a 4 corner layout, or was there not room for that?

Your room has really gone into the big leagues!
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post #20256 of 27131 Old 09-01-2015, 08:20 AM
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Thanks! They sound a lot better than they did with just 3. Now that the back nearfield subwoofers are contributing the majority of the sound they do have a lot more tactile feedback than before. While testing, I had to pause to make sure the crowsons were off at one point.

The front corners are occupied but I did try moving the back subs to the corners but the response was worse in the range I was trying to correct (60-80hz).

My next upgrade would be atmos and I am trying to decide if I want to buy one of the new year models with hdcp 2.2 and dts-x or get one of last years models for cheap since I am not planning on upgrading to 4k for the next 2-3 years at the least. I may wait to hear the reviews for dts-x before I make my decision.


Quote:
Originally Posted by rcohen View Post
@ahmedreda ,
Graphs look great!
How does it sound?

Did you also try a 4 corner layout, or was there not room for that?

Your room has really gone into the big leagues!

My home theater
Speakers: 3 JTR 212HTR (LCR), 2 Jtr Single 8LP (S), 2 JTR Triple 12LF (SB)) , 4 Volt 10LX (Atmos)
Subwoofers: 4 Rythmik FV15HP , 5 Crowson Shadow 8 transducers, 3 Buttkicker LFE
Display: JVC RS400
FS: 4xRythmik FV15HP
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post #20257 of 27131 Old 09-01-2015, 08:26 AM
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@ahmedreda

Glad you decided to pick-up another FV after all. I decided to just hold onto my FV's since I couldn't really justify upgrading at the time to anything else. I'm waiting patiently to see what Brian has in store as the FV15HP's successor.

Display - LG 65EF9500
Receiver - Denon 4311CI
Speakers - Klipsch RF-82 II's, RC-62 II, RB-61 II's
Subs - Rythmik FV15HP's
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post #20258 of 27131 Old 09-01-2015, 08:38 AM
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I was in the same position and it made more sense to me to add one more sub. I now more headroom than I need for my listening levels ..

Did Brian give any hints about the FV successor?

Quote:
Originally Posted by JT78681 View Post
@ahmedreda

Glad you decided to pick-up another FV after all. I decided to just hold onto my FV's since I couldn't really justify upgrading at the time to anything else. I'm waiting patiently to see what Brian has in store as the FV15HP's successor.

My home theater
Speakers: 3 JTR 212HTR (LCR), 2 Jtr Single 8LP (S), 2 JTR Triple 12LF (SB)) , 4 Volt 10LX (Atmos)
Subwoofers: 4 Rythmik FV15HP , 5 Crowson Shadow 8 transducers, 3 Buttkicker LFE
Display: JVC RS400
FS: 4xRythmik FV15HP
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post #20259 of 27131 Old 09-01-2015, 08:41 AM
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Quote:
Originally Posted by ahmedreda View Post
I was in the same position and it made more sense to me to add one more sub. I now more headroom than I need for my listening levels ..

Did Brian give any hints about the FV successor?
If my memory serves me correct the last time I was at the shop he mentioned the possibility of adding 18" subs to the line up.

Display - LG 65EF9500
Receiver - Denon 4311CI
Speakers - Klipsch RF-82 II's, RC-62 II, RB-61 II's
Subs - Rythmik FV15HP's
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post #20260 of 27131 Old 09-01-2015, 08:49 AM
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I think that would be a good move to compete with the rest of the ID sub manufacturers as almost all of them offer 18" subs.
Quote:
Originally Posted by JT78681 View Post
If my memory serves me correct the last time I was at the shop he mentioned the possibility of adding 18" subs to the line up.

My home theater
Speakers: 3 JTR 212HTR (LCR), 2 Jtr Single 8LP (S), 2 JTR Triple 12LF (SB)) , 4 Volt 10LX (Atmos)
Subwoofers: 4 Rythmik FV15HP , 5 Crowson Shadow 8 transducers, 3 Buttkicker LFE
Display: JVC RS400
FS: 4xRythmik FV15HP
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post #20261 of 27131 Old 09-01-2015, 09:44 AM
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Quote:
Originally Posted by ahmedreda View Post
I think that would be a good move to compete with the rest of the ID sub manufacturers as almost all of them offer 18" subs.
Agreed. I'd be the first one to ask for a unit to review.

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post #20262 of 27131 Old 09-01-2015, 09:59 AM
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Ahmed, is the bass localized having 2 stacked in the back? What do you use for LPF? What do you use to Eq subs?
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post #20263 of 27131 Old 09-01-2015, 10:01 AM
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Quote:
Originally Posted by JT78681 View Post
If my memory serves me correct the last time I was at the shop he mentioned the possibility of adding 18" subs to the line up.
I bet it will be a great sub but what about the price and size?
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post #20264 of 27131 Old 09-01-2015, 10:14 AM
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Quote:
Originally Posted by tvuong View Post
I bet it will be a great sub but what about the price and size?
I'm thinking ~$2000 shipped, but maybe Brian will chime in and shed some light.

Display - LG 65EF9500
Receiver - Denon 4311CI
Speakers - Klipsch RF-82 II's, RC-62 II, RB-61 II's
Subs - Rythmik FV15HP's
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post #20265 of 27131 Old 09-01-2015, 10:59 AM
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Quote:
Originally Posted by enricoclaudio View Post
Thanks
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post #20266 of 27131 Old 09-01-2015, 11:05 AM
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I use a minidsp 2x4..
The bass is not localized as long as I keep the cross under 80hertz.. My MLP is 3-3.5 feet away from the subs.. I think if I had it closer, I would be able to tell it is coming from the sub.

Quote:
Originally Posted by tvuong View Post
Ahmed, is the bass localized having 2 stacked in the back? What do you use for LPF? What do you use to Eq subs?

My home theater
Speakers: 3 JTR 212HTR (LCR), 2 Jtr Single 8LP (S), 2 JTR Triple 12LF (SB)) , 4 Volt 10LX (Atmos)
Subwoofers: 4 Rythmik FV15HP , 5 Crowson Shadow 8 transducers, 3 Buttkicker LFE
Display: JVC RS400
FS: 4xRythmik FV15HP

Last edited by ahmedreda; 09-01-2015 at 11:10 AM.
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post #20267 of 27131 Old 09-01-2015, 11:24 AM
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Just minidsp to Eq? With or without auto cal avr?
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post #20268 of 27131 Old 09-01-2015, 11:31 AM
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I first use the minidsp to eq the basic response (basically just the LPF in this case) then I use dirac live on the minidsp ddrc-88a to eq after that.
Quote:
Originally Posted by tvuong View Post
Just minidsp to Eq? With or without auto cal avr?

My home theater
Speakers: 3 JTR 212HTR (LCR), 2 Jtr Single 8LP (S), 2 JTR Triple 12LF (SB)) , 4 Volt 10LX (Atmos)
Subwoofers: 4 Rythmik FV15HP , 5 Crowson Shadow 8 transducers, 3 Buttkicker LFE
Display: JVC RS400
FS: 4xRythmik FV15HP
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post #20269 of 27131 Old 09-01-2015, 01:47 PM
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^^ cool. Thanks.
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post #20270 of 27131 Old 09-01-2015, 01:48 PM
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Quote:
Originally Posted by Rythmik View Post
Yes. That is LVX12 with multi-tune feature. The design is complete and they should be in next shipment.
This from "way back" in the middle of July. July and August have come and gone. I'm hoping Brian can give us an update on this while he's in China. Might be easier from there to tell if the LVX12s are being bumped to a later shipment, etc.
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post #20271 of 27131 Old 09-01-2015, 10:17 PM
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Here are some pictures:
Front:




Back:


After what you mentioned about the localization, I realized that I have 2 of my surrounds crossed at 100 hertz and my back subs were about 1.5 foot off the center of the room so I moved them to the center so at least the sounds 80+ would sound like they are coming from the center rather than from one side..

I was surprised that the frequency response at the new location was MUCH better than the old. I saw a 6-7 dbs increase between 60-80hertz which is the exact region I was having trouble with. Here is the old response without eq vs the new.


I didn't have a chance to rerun dirac but using the old eq settings resulted in a bump in that region rather than a dip or it being flat..


I will try to run Dirac hopefully before the weekend and do another compression test.
Quote:
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4 FVs - super nice. Are they each in a corner of your room? Have updated pix? Can you scale your horizontal to 8-200hz? I assume each higher graph was increased by 5db?
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My home theater
Speakers: 3 JTR 212HTR (LCR), 2 Jtr Single 8LP (S), 2 JTR Triple 12LF (SB)) , 4 Volt 10LX (Atmos)
Subwoofers: 4 Rythmik FV15HP , 5 Crowson Shadow 8 transducers, 3 Buttkicker LFE
Display: JVC RS400
FS: 4xRythmik FV15HP

Last edited by ahmedreda; 09-01-2015 at 10:23 PM.
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post #20272 of 27131 Old 09-01-2015, 10:28 PM
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^^ nice improvement and I bet it helps with less localization also being at the center. Now run your Dirac cal and you should be flat across the entire range. Please post graph for this (with 8-200hz horizontal scale). Honestly I was expecting a better graph than you first posted having 4 subs. Nice speakers by the way and of course the nice room.

Last edited by tvuong; 09-01-2015 at 10:33 PM.
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post #20273 of 27131 Old 09-01-2015, 10:57 PM
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Quote:
Originally Posted by tvuong View Post
Just for fun, JT. Edge of Tomorrow at reference MV with +6db subs hot. There was port chuffing but it was not bad. No bad sound was heard at all Again, look at how fast Rythmik puts a brake on the driver. Sorry for the crappy phone video.

https://www.dropbox.com/s/8prrwqwhk0...20hot.MOV?dl=0
I forgot to mention that I has been running +3db low shelf filter centered at 60hz also on top of 6db subs hot. So, the clip was at reference volume with all of these.
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post #20274 of 27131 Old 09-02-2015, 12:56 AM
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Quote:
Originally Posted by ahmedreda View Post
...

I will try to run Dirac hopefully before the weekend and do another compression test.
ahmedreda,

Are you using the standard auto curve on Dirac Live or a custom curve? If you're going to try the custom curve, be sure to try out Markus Super Duper (MSD) custom curve that basically follows the JBL Synthesis target curve.

Jerry has written a guide in the DDRC-88A thread where one implements speaker groups to allow the Dirac Live correction filters to be in place an octave above and below the crossover point so that the overall sound it is more balanced.

Apparently Dirac Live doesn't do much around the crossover region so Markus has developed a technique to allow better integration between the satellite and subs.

Marantz SR-7009, Oppo BPD-93, MTV 7000D, aTV, Harmony Home Control remote, KEF E301+T101, MiniDSP (2x4)+(10x10HD)+(DDRC-88A), Emotiva 2xXPA-5 (Gen2), Rythmik 2xF12G+2xF8, HiMedia Q16, LG 55EC9300.
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post #20275 of 27131 Old 09-02-2015, 06:32 AM
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steveting99, thanks, I am planning to give that a try after re-taking the measurements. It seems from the 88a thread that it yields good results.

Quote:
Originally Posted by steveting99 View Post
ahmedreda,

Are you using the standard auto curve on Dirac Live or a custom curve? If you're going to try the custom curve, be sure to try out Markus Super Duper (MSD) custom curve that basically follows the JBL Synthesis target curve.

Jerry has written a guide in the DDRC-88A thread where one implements speaker groups to allow the Dirac Live correction filters to be in place an octave above and below the crossover point so that the overall sound it is more balanced.

Apparently Dirac Live doesn't do much around the crossover region so Markus has developed a technique to allow better integration between the satellite and subs.

My home theater
Speakers: 3 JTR 212HTR (LCR), 2 Jtr Single 8LP (S), 2 JTR Triple 12LF (SB)) , 4 Volt 10LX (Atmos)
Subwoofers: 4 Rythmik FV15HP , 5 Crowson Shadow 8 transducers, 3 Buttkicker LFE
Display: JVC RS400
FS: 4xRythmik FV15HP
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post #20276 of 27131 Old 09-02-2015, 06:35 AM
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Thank you.. I think part of it is that I am very limited on my placement options. My 4 subs are working more like 2 subs as far as the smoothing goes.

Quote:
Originally Posted by tvuong View Post
^^ nice improvement and I bet it helps with less localization also being at the center. Now run your Dirac cal and you should be flat across the entire range. Please post graph for this (with 8-200hz horizontal scale). Honestly I was expecting a better graph than you first posted having 4 subs. Nice speakers by the way and of course the nice room.

My home theater
Speakers: 3 JTR 212HTR (LCR), 2 Jtr Single 8LP (S), 2 JTR Triple 12LF (SB)) , 4 Volt 10LX (Atmos)
Subwoofers: 4 Rythmik FV15HP , 5 Crowson Shadow 8 transducers, 3 Buttkicker LFE
Display: JVC RS400
FS: 4xRythmik FV15HP
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post #20277 of 27131 Old 09-02-2015, 07:42 AM
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Question Power needs

How many 110v amps will an F12 with a 370PEQ amp draw?

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post #20278 of 27131 Old 09-02-2015, 07:43 AM
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Would someone from Rythmik please answer:

On the LV12R

1) Are the surrounds rubber or foam?

2) Is the amplifier warranty 2 years or 3 years? If 3 years, would the receipt read 3 years because the website still states 2.
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post #20279 of 27131 Old 09-02-2015, 07:55 AM
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Quote:
Originally Posted by checker9 View Post
Would someone from Rythmik please answer:

On the LV12R

1) Are the surrounds rubber or foam?

2) Is the amplifier warranty 2 years or 3 years? If 3 years, would the receipt read 3 years because the website still states 2.
1.- Rubber surround

2.- Since June 2015 all our subwoofers have 3 years warranty on amplifier and 5 years on driver.



Enrico Castagnetti @ Rythmik Audio
Media Room: Polk LSiM705s, LSiM706C, LSiM703s | Rythmik F12SE (x2) | Marantz SR7008 | Parasound Halo P5 | Emotiva XPA-3 & XPA-200 | Oppo 105D | Sony HW40ES |
Desktop: Dynaudio BM5 mkIII | Rythmik L22 | Apogee Quartet + Duet | 27" iMac|
Bedroom: B&W 685 S2 | Rythmik LVX12 | Marantz NR1606 | Emotiva XPA-200 Gen 2 | Samsung UN50JU6500 |
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post #20280 of 27131 Old 09-02-2015, 08:01 AM
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@enricoclaudio

You might want to try and get the website updated in regards to the amplifier warranty. I've seen the above question asked now numerous times on various threads. Just a thought!

Display - LG 65EF9500
Receiver - Denon 4311CI
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Subs - Rythmik FV15HP's
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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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