Official Rythmik Audio Subwoofer thread - Page 751 - AVS Forum | Home Theater Discussions And Reviews
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post #22501 of 30857 Old 01-07-2016, 06:27 PM
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Originally Posted by Cain View Post
I always wanted a pair of DQ10s!
My first "audio epiphany" was when I heard a pair of DQ10s playing in an audio dealer in Brooklyn. I was in my late teens. I still get goose bumps when I remember that day!!!!
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post #22502 of 30857 Old 01-07-2016, 07:14 PM
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Originally Posted by tvuong View Post
Per Brian, he prefers straight ports to reduce wind noise and he needs long ports to achieve 12hz extension which eliminated the front port option. Bottom ports require feet, he prefers sub sitting on floor for more stability.
It will be interesting to see picture of these beast (even with the prototype one) as I have not seen a top ports sub before.
Hello,

Hope you are well.

The SVS PC13-Ultra cylinder sub has three top firing ports if you want to take a look at one.

Don't kill me for the link to the pictures guys...I know this is the Rythmik forum. This is related to the discussion in the text bolded above.

http://www.svsound.com/collections/c...cts/pc13-ultra



Later,

Tony


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post #22503 of 30857 Old 01-07-2016, 10:02 PM
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^ Will be interesting if Brian ever comes up with a cylinder design in either the 15" or 18" down firing driver.

BTW, does anyone know what the Q value (bandwidth) of the PEQ filter that's available on the plate amp? Min/Max setting.

Thanks.

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post #22504 of 30857 Old 01-07-2016, 11:33 PM
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Quote:
Originally Posted by steveting99 View Post
^ Will be interesting if Brian ever comes up with a cylinder design in either the 15" or 18" down firing driver.

BTW, does anyone know what the Q value (bandwidth) of the PEQ filter that's available on the plate amp? Min/Max setting.

Thanks.

The Q value of min (max) bandwidth is 8 (0.8).
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post #22505 of 30857 Old 01-07-2016, 11:50 PM
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^Thanks Brian!

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 #22506 of 30857 Old 01-08-2016, 09:00 AM
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This picture sums up how I have felt at work all week.
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post #22507 of 30857 Old 01-08-2016, 09:30 AM
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I'm hoping someone at Rythmik can check their webforms to ensure it's still working. I've put in a couple of requests but haven't received a reply yet. Currently trying to decide between something from Rythmik and Gamma 15 but I'm not getting anywhere with the guys at Rythmik unfortunately. While I know I will get quite a bit more spl and extension from the Gamma in the same price range, I'm more of an SQ guy so that's why I'm here...plus those black aluminum drivers are sexy haha

Thanks,

David W.
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post #22508 of 30857 Old 01-08-2016, 10:34 AM
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Quote:
Originally Posted by Nodscene View Post
I'm hoping someone at Rythmik can check their webforms to ensure it's still working. I've put in a couple of requests but haven't received a reply yet. Currently trying to decide between something from Rythmik and Gamma 15 but I'm not getting anywhere with the guys at Rythmik unfortunately. While I know I will get quite a bit more spl and extension from the Gamma in the same price range, I'm more of an SQ guy so that's why I'm here...plus those black aluminum drivers are sexy haha

Thanks,

David W.
@Rythmik @enricoclaudio

I'll tag them on your post, so maybe they get to it quicker.

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post #22509 of 30857 Old 01-08-2016, 10:43 AM
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Quote:
Originally Posted by Nodscene View Post
I'm hoping someone at Rythmik can check their webforms to ensure it's still working. I've put in a couple of requests but haven't received a reply yet. Currently trying to decide between something from Rythmik and Gamma 15 but I'm not getting anywhere with the guys at Rythmik unfortunately. While I know I will get quite a bit more spl and extension from the Gamma in the same price range, I'm more of an SQ guy so that's why I'm here...plus those black aluminum drivers are sexy haha

Thanks,

David W.

The silver driver looks really cool (especially in the SE gloss black enclosure), but the black DS1510 is just so masculine. It reminds me of a new Camaro, or even Corvette! I haven't heard the Gamma sub you refer to, but if sound quality is your priority, a Rythmik is awfully hard to equal. I always choose quality over quantity, ordering a 6oz Filet Mignon rather than 12oz of any other cut. I'd also rather have a pint of Johnny Walker Black than a fifth of JW Red!
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post #22510 of 30857 Old 01-08-2016, 10:44 AM
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Quote:
Originally Posted by Nodscene View Post
I'm hoping someone at Rythmik can check their webforms to ensure it's still working. I've put in a couple of requests but haven't received a reply yet. Currently trying to decide between something from Rythmik and Gamma 15 but I'm not getting anywhere with the guys at Rythmik unfortunately. While I know I will get quite a bit more spl and extension from the Gamma in the same price range, I'm more of an SQ guy so that's why I'm here...plus those black aluminum drivers are sexy haha

Thanks,

David W.
Our contact webform is working fine. I got a lot of email this morning but none from you. Feel free to send me an email directly to tech@rythmikaudio.com and CC Brian as well at briand@rythmikaudio.com



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Media Room: Ascend Acoustics Sierra Towers w/ RAAL, Horizon w/ RAAL, Sierra 2s & Lunas | Rythmik F12SE (x2) | Emotiva XMC-1 | Emotiva XPA-3 & XPA-200 | Oppo 105D | Bluesound Node 2 | Sony HW40ES |
Desktop: Dynaudio BM5 mkIII | Rythmik L22 | Apogee Quartet | 27" iMac|
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post #22511 of 30857 Old 01-08-2016, 10:53 AM
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Quote:
Originally Posted by stustan View Post
My first "audio epiphany" was when I heard a pair of DQ10s playing in an audio dealer in Brooklyn. I was in my late teens. I still get goose bumps when I remember that day!!!!

For me it was my first electrostatic driver, the RTR ESL tweeter. The transparency, resolution, and openness! Second was the original Magneplanar Tympani I, which was the first loudspeaker I heard (and one of the only handful I've heard to this day) that reproduced music to life-size scale, a grand piano sounding big and a symphony orchestra huge, with the back row of the orchestra further away than the wall behind the speakers!
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post #22512 of 30857 Old 01-08-2016, 10:55 AM
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Thanks Enrico,

Actually I sent it last night and the first one was last week sometime. I'll send an email to both of you today.

Cheers and look forward to seeing what can be done.



Quote:
Originally Posted by enricoclaudio View Post
Our contact webform is working fine. I got a lot of email this morning but none from you. Feel free to send me an email directly to tech@rythmikaudio.com and CC Brian as well at briand@rythmikaudio.com

Make something idiot-proof, and they will build a better idiot
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post #22513 of 30857 Old 01-09-2016, 01:34 AM
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Originally Posted by Brewjitsu View Post
Hi guys, I'm looking at purchasing the e15hp. My question is regarding the peq. To utilise this or gain any benefit from it I need to use rew is this correct? Or is it something that can be done by ear? New to all the intricacies of sub tuning and one of the features of this sub over another brand I'm looking at is the peq.

Yes, and you need a mic like UMIK1 from minidsp to measure.

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post #22514 of 30857 Old 01-09-2016, 10:59 AM
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As the Rythmik PEQ is a single band, if you don't already have a measuring mic etc., you might be able to get away with a no-cost means of determining the frequency(ies) most in need of attenuating. Play a test CD containing various bass tones, noting the subs output at those frequencies via an SPL meter. If you are lucky, there may be a small group of frequencies far in excess of the others. Adjust the PEQ knobs to and in that frequency range, check the meter for a change, and listen for a decrease in output at the target frequencies and/or in room resonance.
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post #22515 of 30857 Old 01-09-2016, 11:40 AM
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If applying sub EQ via REW/MiniDSP and using LPF on sub, is it better to apply EQ or LPF first?

If I get a sharp roll above 100Hz when applying LPF first and EQ second, does that mean SQ will suffer in that region? I have flat response to 100Hz and then it basically falls off a cliff and into the noise floor (45dB) by 200Hz (with 75dB measurement level).
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post #22516 of 30857 Old 01-09-2016, 11:58 AM
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I got a UMIK-1 mic, and I have a laptop with HDMI Output.

Is there a REW for dummies guide to simplify setting this thing up??

Update: I found something very simple to get me started, it is on my mic's web page:

UMIK-1 setup with REW
https://www.minidsp.com/applications...setup-with-rew

What sound level should I set my mic to ?? 75 dB?? 85dB??




...

Last edited by Cain; 01-09-2016 at 12:26 PM.
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post #22517 of 30857 Old 01-09-2016, 03:30 PM
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Very interested to see the new prototypes as well. I absolutely love my FV15HP and it is an awesome performer but it is lonely being the only sub in my HT so it needs a little (bigger) brother. The FV25 might just be the ticket to pair well with the FV15HP.

All of you that are concerned with the top port don't worry as you could always use it as a cup holder. :-)


Is February here yet?

Regards,

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Now a Certified Carpet Counselor and Plumbing Counselor (Self given titles - pay no attention).
Enjoying my "almost done" theater.
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post #22518 of 30857 Old 01-10-2016, 02:13 AM
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Quote:
Originally Posted by Cain View Post
I got a UMIK-1 mic, and I have a laptop with HDMI Output.

Is there a REW for dummies guide to simplify setting this thing up??

Update: I found something very simple to get me started, it is on my mic's web page:

UMIK-1 setup with REW
https://www.minidsp.com/applications...setup-with-rew

What sound level should I set my mic to ?? 75 dB?? 85dB??




...
Once you'v got a calibrated USB mic (UMIK-1 from Cross Spectrum Labs), AVS member AustinJerry has written a step by step guide on carry out in room measurements using REW in post number 275 in the Simplified REW Setup and Use thread.

Suggest to download the guide, pull up a chair with your favorite beverage and spend some time reading through the guide - while awaiting the UMIK-1 mic to arrive.

Getting a boom stand mic such as this one from Amazon will help in making consistent and repeatable measurements.

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 #22519 of 30857 Old 01-10-2016, 08:26 AM
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Quote:
Originally Posted by PlasmaPZ80U View Post
If applying sub EQ via REW/MiniDSP and using LPF on sub, is it better to apply EQ or LPF first?

If I get a sharp roll above 100Hz when applying LPF first and EQ second, does that mean SQ will suffer in that region? I have flat response to 100Hz and then it basically falls off a cliff and into the noise floor (45dB) by 200Hz (with 75dB measurement level).
I think I just answered my own question. It sounded wrong (all kinds of distorted though only obvious with certain content) and mid to upper bass was too weak.

It seems like adding low or high pass filters via REW or MiniDSP plug-in is best avoided. And when using Line In one should not need to adjust the crossover knob below the max position when using an AVR with bass management.

Better to just let the AVR do it's thing and just use the MiniDSP/REW to eq things flat in low extension/damping and then flip to mid or high if desired.

The simple approach works best and the more I try other things, the obvious it becomes. And that includes simply sticking with a 80Hz crossover whenever possible.

I can now see why some people who used to use REW just let Audyssey do the hard work and focus on getting the basics right.

Don't get me wrong, REW is a great and very powerful tool, but it can make some of us focus too much on measurements and data and not enough time spent enjoying the SQ and of course, the content itself. Also, get great looking measurements but bad sound in some cases.

(Just my 2 cents after playing around a ton with REW/MiniDSP.)

Now that I know what sounds best I won't be trying to 'improve' things any further. It's like they say, don't fix it if it isn't broken.
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post #22520 of 30857 Old 01-10-2016, 09:07 AM
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Quote:
Originally Posted by PlasmaPZ80U View Post


I can now see why some people who used to use REW just let Audyssey do the hard work and focus on getting the basics right.

Don't get me wrong, REW is a great and very powerful tool, but it can make some of us focus too much on measurements and data and not enough time spent enjoying the SQ and of course, the content itself. Also, get great looking measurements but bad sound in some cases

Now that I know what sounds best I won't be trying to 'improve' things any further. It's like they say, don't fix it if it isn't broken.
I've been following your posts with interest. I admire your
Tenacity and (what I perceive) as an almost obsessive
Compulsion? with REW. I think you've done a great job
Getting your system dialed in and learning how and why
What sounds best. Especially considering your limited
Placement options.

I've been interested in REW and understand the basics
Of its operation. I use something similiar in my set up.
The Anthem Room Correction system (and PBK) which
Uses a calibrated microphone and a laptop to provide
Real time graphs (and user defined corrections) to achieve
The 'perfect sound'. But, I too, found myself almost
Obsessed with achieving the perfect graph and sound.
Once I got it dialed in I took a step back and told myself,
'Enough already'.

I learned a lot about proper placement and in my
Living spaces what works and what doesn't. I now
Fully enjoy my systems and don't worry about tweaking
Things. Haven't done any measurements in a couple of
Years.

I think that you should put up your REW and kick
Back and enjoy your system!! I see that your interested
In getting a new Audyssey AVR and/or speakers too.

I can't say which you should do first, but don't rush into
Anything. Speakers will make the biggest difference, but
I'm a fan of Audyssey when properly used. Not so much
YPAO. (Especially early versions)

Best of luck to you, and thanks for the education.
(No REW for me.)
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post #22521 of 30857 Old 01-10-2016, 01:56 PM
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Quote:
Originally Posted by grasshoppers View Post
I've been following your posts with interest. I admire your
Tenacity and (what I perceive) as an almost obsessive
Compulsion? with REW. I think you've done a great job
Getting your system dialed in and learning how and why
What sounds best. Especially considering your limited
Placement options.

I've been interested in REW and understand the basics
Of its operation. I use something similiar in my set up.
The Anthem Room Correction system (and PBK) which
Uses a calibrated microphone and a laptop to provide
Real time graphs (and user defined corrections) to achieve
The 'perfect sound'. But, I too, found myself almost
Obsessed with achieving the perfect graph and sound.
Once I got it dialed in I took a step back and told myself,
'Enough already'.

I learned a lot about proper placement and in my
Living spaces what works and what doesn't. I now
Fully enjoy my systems and don't worry about tweaking
Things. Haven't done any measurements in a couple of
Years.

I think that you should put up your REW and kick
Back and enjoy your system!! I see that your interested
In getting a new Audyssey AVR and/or speakers too.

I can't say which you should do first, but don't rush into
Anything. Speakers will make the biggest difference, but
I'm a fan of Audyssey when properly used. Not so much
YPAO. (Especially early versions)

Best of luck to you, and thanks for the education.
(No REW for me.)
Yeah, I'm done playing with REW/MiniDSP. My final results are shown below. Nothing fancy, just EQ'd flat in low:
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post #22522 of 30857 Old 01-10-2016, 11:09 PM
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Quote:
Originally Posted by grasshoppers View Post
I've been following your posts with interest. I admire your
Tenacity and (what I perceive) as an almost obsessive
Compulsion? with REW. I think you've done a great job
Getting your system dialed in and learning how and why
What sounds best. Especially considering your limited
Placement options.

I've been interested in REW and understand the basics
Of its operation. I use something similiar in my set up.
The Anthem Room Correction system (and PBK) which
Uses a calibrated microphone and a laptop to provide
Real time graphs (and user defined corrections) to achieve
The 'perfect sound'. But, I too, found myself almost
Obsessed with achieving the perfect graph and sound.
Once I got it dialed in I took a step back and told myself,
'Enough already'.

I learned a lot about proper placement and in my
Living spaces what works and what doesn't. I now
Fully enjoy my systems and don't worry about tweaking
Things. Haven't done any measurements in a couple of
Years.

I think that you should put up your REW and kick
Back and enjoy your system!! I see that your interested
In getting a new Audyssey AVR and/or speakers too.

I can't say which you should do first, but don't rush into
Anything. Speakers will make the biggest difference, but
I'm a fan of Audyssey when properly used. Not so much
YPAO. (Especially early versions)

Best of luck to you, and thanks for the education.
(No REW for me.)
One interesting thing I ran into trying different settings with Dirac is that the best frequency response doesn't always sound best. Dirac is neat in that it lets you view amplitude and impulse response, and you tend to get much better sounding results if you tune for both.

That said, some of us find the tinkering to be as fun as the listening.
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post #22523 of 30857 Old 01-11-2016, 06:26 AM
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Originally Posted by Rythmik View Post
The shipping will be expensive because these will be shipped via freight.
Quote:
Originally Posted by JT78681 View Post
Dammit I'm already fantasizing about snagging a pair of FV18's or FV25HP's. Definitely more of a want than a need.
Free pick up for you. I am willing to bet you will be the first to have a pair of the FV25's or FV18's
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post #22524 of 30857 Old 01-11-2016, 06:34 AM
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Originally Posted by rcohen View Post
One interesting thing I ran into trying different settings with Dirac is that the best frequency response doesn't always sound best. Dirac is neat in that it lets you view amplitude and impulse response, and you tend to get much better sounding results if you tune for both.

That said, some of us find the tinkering to be as fun as the listening.
How does one interpret impulse response and tune for it? Is it tied to the waterfall/spectro/decay? (It's not in the REW guide.)
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post #22525 of 30857 Old 01-11-2016, 06:52 AM
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Quote:
Originally Posted by PlasmaPZ80U View Post
How does one interpret impulse response and tune for it? Is it tied to the waterfall/spectro/decay? (It's not in the REW guide.)
With Dirac, it lets you see the impulse response for different target curves. In some cases, getting too aggressive with the target curve will compromise impulse response. It's pretty much trial and error.

With REW, there are ways to view impulse response, and the waterfall/spectral decay is one of them.
There is also an impulse response view.
For example, some people have been surprised to find Audyssey hurting their impulse response and waterfall (in some cases, not all.)

I don't know of any way to change the impulse response from REW - just to measure and view it.

Here's a Google Image Search, to show impulse response improvements with REW:
https://www.google.com/search?q=dira...aTL9NSpxVlM%3A

It's easy to find similar waterfall improvements that people have posted.
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post #22526 of 30857 Old 01-11-2016, 07:07 AM
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Quote:
Originally Posted by rcohen View Post
With Dirac, it lets you see the impulse response for different target curves. In some cases, getting too aggressive with the target curve will compromise impulse response. It's pretty much trial and error.

With REW, there are ways to view impulse response, and the waterfall/spectral decay is one of them.
There is also an impulse response view.
For example, some people have been surprised to find Audyssey hurting their impulse response and waterfall (in some cases, not all.)

I don't know of any way to change the impulse response from REW - just to measure and view it.

Here's a Google Image Search, to show impulse response improvements with REW:
https://www.google.com/search?q=dira...aTL9NSpxVlM%3A

It's easy to find similar waterfall improvements that people have posted.
So, impulse/waterfall/spectral decay are all what Audyssey refers to as time domain response?

And, applying too many filters/filters with very high Q could hurt impulse response and SQ as a result?
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post #22527 of 30857 Old 01-11-2016, 07:12 AM
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Originally Posted by tvuong View Post
Free pick up for you. I am willing to bet you will be the first to have a pair of the FV25's or FV18's
Don't temp me!

Display - LG OLED
Receiver - Denon
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post #22528 of 30857 Old 01-11-2016, 12:50 PM
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So the FV25 seems very similar to the RBH SX-1212P/R design wise. This sub put out some solid output according to the tests ran by Josh on data-bass. It uses two 12" drivers and a 2400 watt amp. I'm sure the FV25 will not boast that powerful of an amp, but will have two 15" drivers. Makes me curious as to just how powerful this sub could be.

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post #22529 of 30857 Old 01-11-2016, 01:00 PM
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Originally Posted by JT78681 View Post
So the FV25 seems very similar to the RBH SX-1212P/R design wise. This sub put out some great output according to the tests ran by Josh on data-bass. It uses two 12" drivers and a 2400 watt amp. I'm sure the FV25 will not boast that powerful of an amp, but will have two 15" drivers. Makes me curious as to just how powerful this sub could be.
Rythmik subs don't need that kind of power as they are much more efficient with lighter mass drivers. And I imagine 2 15" drivers should do better, especially if they are upgraded versions of the ones your FV15HP's use.

I wonder if there is a market for a ported version of the L22. An LV22. Could be a beast in output but with a footprint and weight closer to the L22 (and price tag).

I wonder if Rythmik sells more premium or budget priced models. If SQ of the L series is same to 95% of customers as the F series, than more L series models with high output could have a strong market.
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post #22530 of 30857 Old 01-11-2016, 05:36 PM
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Originally Posted by JT78681 View Post
So the FV25 seems very similar to the RBH SX-1212P/R design wise. This sub put out some solid output according to the tests ran by Josh on data-bass. It uses two 12" drivers and a 2400 watt amp. I'm sure the FV25 will not boast that powerful of an amp, but will have two 15" drivers. Makes me curious as to just how powerful this sub could be.

As "plasma" just stated, amp power is meaningless if not coupled with a driver's sensitivity/efficiency. If the Rythmik drivers are only 3dB more so than those in the RBH, the Rythmik amp need put out only 1200 watts to be equivalent to the RBH's 2400 watts. But before that is a consideration, one should be aware of the basic, huge advantage the Rythmik subs have over "normal" subs, RBH included. The patented Rythmik Direct Servo Feedback is a HUGE deal! Far, far more important that amplifier power. To not appreciate that is like accessing the abilities of a, say, BMW by looking at it's horsepower alone, rather than by it's cornering and handling abilities as well. If sound QUALITY matters to you, not just sound quantity, Rythmiks are in a class of their own. THAT'S why people buy them, not for the most output. If you're a drinking man, let me offer this analogy: For my twenty dollars, I would rather have a pint of Johnny Walker Black Whiskey than a 5th of Johnny Walker Red ;-).

Last edited by BDP24; 01-11-2016 at 05:46 PM.
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