Official Rythmik Audio Subwoofer thread - Page 574 - AVS Forum
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post #17191 of 17211 Old 12-16-2014, 03:11 PM
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^^^^ His room doesn't look that big from what I recall when looking at pictures, so those FV's must sound absolutely amazing.....

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post #17192 of 17211 Old 12-16-2014, 03:22 PM
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Originally Posted by tcm3 View Post
Thanks. Sweet set up! I feel like I've been given an offer I can't refuse...
Show your wife Ahmedreda's room and tell her you need two of them at the minimum
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post #17193 of 17211 Old 12-16-2014, 03:29 PM
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Originally Posted by tvuong View Post
Show your wife Ahmedreda's room and tell her you need two of them at the minimum
He should just show her this picture and tell her there are some members who have 3-4 of them in their room.
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Receiver - Denon 4311CI
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post #17194 of 17211 Old 12-16-2014, 03:42 PM
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Originally Posted by tvuong View Post
Show your wife Ahmedreda's room and tell her you need two of them at the minimum
That is the ultimate plan, but I think I'll try the one at a time approach. It's a bit chilly sleeping outside.
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post #17195 of 17211 Old 12-16-2014, 03:45 PM
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Originally Posted by tcm3 View Post
That is the ultimate plan, but I think I'll try the one at a time approach. It's a bit chilly sleeping outside.
Sometimes you have to swallow your pride and spend a few nights on the couch.

Receiver - Denon 4311CI
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post #17196 of 17211 Old 12-16-2014, 06:34 PM
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Originally Posted by enricoclaudio View Post
I posted on Facebook pictures of the New F8, dual 8" driver sealed subwoofer with HX580 amp.

https://www.facebook.com/rythmikaudio

It looks pretty cool!!!
enrico,

Are there any specs on the dual 8" unit? Is the 8" driver from GR Research? I've got the F12G and really like it - but it's not enough to tame the room modes. Thinking of either getting another F12G or going with 2xF8 for a new place. Would like to know the difference between the two units.

Thanks.

Maranatz NR1504, Oppo BPD-93, MTV 7000D, LG LW6500, aTV, WDTV Live, Harmony 650 remote, KEF E301, MiniDSP(2x4), Rythmik F12G

Last edited by steveting99; 12-16-2014 at 06:36 PM. Reason: typo and additional text for clarification
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post #17197 of 17211 Old 12-16-2014, 06:47 PM
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Originally Posted by steveting99 View Post
enrico,

Are there any specs on the dual 8" unit? Is the 8" driver from GR Research? I've got the F12G and really like it - but it's not enough to tame the room modes. Thinking of either getting another F12G or going with 2xF8 for a new place. Would like to know the difference between the two units.

Thanks.
The F8 has two DS800-3 drivers made by Rythmik Audio. There is a 8" servo driver made by GR Research, the GR SW8-16FR but this driver is for OB setup. Brian is working updating the website to publish the specifications for the F8.

Best Regards,

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Rythmik Audio

 

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post #17198 of 17211 Old 12-16-2014, 07:16 PM
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Thank you.. It is 12x20x8 = 1920 cuft.. This is for all 3 starting at -20 (75db) to 0 (95db). I stopped at 95db because it was starting to sound too loud..
That was before the distance tweak. The yellow curve is after the distance tweak but it is only measured at 75db..


I have issues between 100-200hz .. may be I need the F8s


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@ahmedreda
Very nice room. 3FVs must be very nice. How big is the room? Got any graph of them 3 to share?
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post #17199 of 17211 Old 12-16-2014, 07:35 PM
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^^ This is subs only, correct? You have same problem I had where if measured with MV=0, your subs were not in the 115db range. If you change the level in REW to -3dBSF (default at -12dBSF) on the measuring screen where you key in the starting and ending frequency for measurement, you will hit 115db at 0MV assuming your subs were properly calibrated. Make sure to lower your MV to start out as it will be louder sweep.
If you crossover your speakers at 80 or 100hz, your speakers will take over from there on your FR, right? Your subs is not responsible for FR above your crossover point.

Last edited by tvuong; 12-16-2014 at 07:40 PM.
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post #17200 of 17211 Old 12-16-2014, 08:24 PM
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Quote:
Originally Posted by ahmedreda View Post
Thank you.. It is 12x20x8 = 1920 cuft.. This is for all 3 starting at -20 (75db) to 0 (95db). I stopped at 95db because it was starting to sound too loud..
That was before the distance tweak. The yellow curve is after the distance tweak but it is only measured at 75db..


I have issues between 100-200hz .. may be I need the F8s
Great response...love seeing the FV's in room response flat to below 10hz. Pretty amazing for a ported sub with its relatively small size. Rythmik design FTW!
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post #17201 of 17211 Old 12-17-2014, 04:45 AM
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Quote:
Originally Posted by enricoclaudio View Post
The F8 has two DS800-3 drivers made by Rythmik Audio. There is a 8" servo driver made by GR Research, the GR SW8-16FR but this driver is for OB setup. Brian is working updating the website to publish the specifications for the F8.
I don't see any updates to your web page for teh F8. I mentioned over in Audioholics in two threads under subwoofers that you have a new subwoofer product out. People are interested in them. When will see the updates?
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post #17202 of 17211 Old 12-17-2014, 07:54 AM
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Originally Posted by 3db View Post
I don't see any updates to your web page for teh F8. I mentioned over in Audioholics in two threads under subwoofers that you have a new subwoofer product out. People are interested in them. When will see the updates?
Website is not updated yet, but check on the link below for more info and specifications.

http://www.rythmikaudio.com/DS800ci_info.html
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post #17203 of 17211 Old 12-17-2014, 09:16 AM
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Quote:
Originally Posted by steveting99 View Post
enrico,

Are there any specs on the dual 8" unit? Is the 8" driver from GR Research? I've got the F12G and really like it. Would like to know the difference between the two units.

Thanks.
Quote:
Originally Posted by enricoclaudio View Post
The F8 has two DS800-3 drivers made by Rythmik Audio. There is a 8" servo driver made by GR Research, the GR SW8-16FR but this driver is for OB setup. Brian is working updating the website to publish the specifications for the F8.
I would also like to know the differences of the F8 and F12G. They seem to be the top Music subs out right now. With a dual subs with a crossover of 100hz, what are the pros and cons.
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post #17204 of 17211 Old 12-17-2014, 02:55 PM
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I would also like to know the differences of the F8 and F12G. They seem to be the top Music subs out right now. With a dual subs with a crossover of 100hz, what are the pros and cons.
If HT is the primary use then the F12/F12G is the best option, mostly because the ability to play content below 20Hz. For pure audiophile music and no need for subsonic frequencies then the F8 is the way to go. The F12 is only +1dB louder than the F8.

Best Regards,

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post #17205 of 17211 Old 12-17-2014, 05:28 PM
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XLR Pin Arrangement on H600XLR2

What is the pin arrangement on the H600XLR2 amp? I will be hooking up to a Marantz 7702, so I wanted to know if I will need to swap pins on one end (see pic below for layout on the Marantz).

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post #17206 of 17211 Old 12-17-2014, 08:25 PM
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Quote:
Originally Posted by enricoclaudio View Post
If HT is the primary use then the F12/F12G is the best option, mostly because the ability to play content below 20Hz. For pure audiophile music and no need for subsonic frequencies then the F8 is the way to go. The F12 is only +1dB louder than the F8.
enrico,

Thanks for this info.

Looks like I'll be getting a 2nd F12G then.

Maranatz NR1504, Oppo BPD-93, MTV 7000D, LG LW6500, aTV, WDTV Live, Harmony 650 remote, KEF E301, MiniDSP(2x4), Rythmik F12G
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post #17207 of 17211 Old 12-17-2014, 09:42 PM
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Quote:
Originally Posted by enricoclaudio View Post
If HT is the primary use then the F12/F12G is the best option, mostly because the ability to play content below 20Hz. For pure audiophile music and no need for subsonic frequencies then the F8 is the way to go. The F12 is only +1dB louder than the F8.
This is one of the very few times I disagree with Enrico (note the date). My first real sub was a servo design of my own (ironically similar to the Rythmik patent, if I'd only known -- but Brian has taken the concept much further!) It was flat to about 16 Hz, and about 6 dB down at 8 Hz. There was no HT then. I needed it to supplement the low end of my little Magnepans and figured it would help with orchestral and organ music, not a huge part of my album collection but significant. What I did not expect was how the extreme low end helped with piano, small jazz groups, and rock. The percussive transients from piano, plucked strings, and drums (natch) were clearly enhanced by the extended low end. I know because I had a steep variable HPF I used mainly to combat rumble from LP records (vinyl) and wow from tape (I had 1/4" to 1" or 2" back then). I kept moving it up and down (the range was about 8 Hz to 24 Hz) and every time I listened seriously I found myself appreciating the music (music! no HT, remember?) more with the lower settings.

So, IME, extended low end is very nice to have for music as well. - Don

"After silence, that which best expresses the inexpressible, is music" - Aldous Huxley
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post #17208 of 17211 Old 12-17-2014, 09:55 PM
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Originally Posted by DonH50 View Post
This is one of the very few times I disagree with Enrico (note the date). My first real sub was a servo design of my own (ironically similar to the Rythmik patent, if I'd only known -- but Brian has taken the concept much further!) It was flat to about 16 Hz, and about 6 dB down at 8 Hz. There was no HT then. I needed it to supplement the low end of my little Magnepans and figured it would help with orchestral and organ music, not a huge part of my album collection but significant. What I did not expect was how the extreme low end helped with piano, small jazz groups, and rock. The percussive transients from piano, plucked strings, and drums (natch) were clearly enhanced by the extended low end. I know because I had a steep variable HPF I used mainly to combat rumble from LP records (vinyl) and wow from tape (I had 1/4" to 1" or 2" back then). I kept moving it up and down (the range was about 8 Hz to 24 Hz) and every time I listened seriously I found myself appreciating the music (music! no HT, remember?) more with the lower settings.

So, IME, extended low end is very nice to have for music as well. - Don
Don, I agree with you. That's why I put the note "no need for subsonic frequencies". If you do a lot of organ music and orchestra then the F12/F12G is a need. BTW my recommendation was based on a previous conversation I had with Brian. He does recommend the F12 over the F8 if primary app is HT.

Best Regards,

Enrico Castagnetti
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post #17209 of 17211 Old 12-17-2014, 10:02 PM
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NP. And I wasn't clear -- I designed it for organ and orchestra, but found the extended low end benefitted jazz and other music as well, a (happy) surprise.

Moving up to the present, you can have my F12's when you pry them from my cold...

"After silence, that which best expresses the inexpressible, is music" - Aldous Huxley
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post #17210 of 17211 Old 12-17-2014, 10:16 PM
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Another consideration with 8" drivers is listening volume. A pair of 8's may actually go almost as low as a 12, just not to the same SPL. Or, perhaps the dual 8's actually will play as loudly and cleanly as a single 12, with the benefit of having a little more resolution. The Infinity RS-1b's I once owned had dual woofer columns containing 8" Servo drivers, but each column had 6 drivers for increased output capability. The more models Brian offers, the harder it will be to choose between them. The good thing is that there is no wrong choice---they're all great!
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post #17211 of 17211 Old Today, 12:11 AM
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Originally Posted by 3db View Post
I don't see any updates to your web page for teh F8. I mentioned over in Audioholics in two threads under subwoofers that you have a new subwoofer product out. People are interested in them. When will see the updates?

Give me this weekend, I will add F8 page. I've already taken out F15 as its price is too close to F15HP.
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