Dual JTR Captivator 2400ULF vs Dual Rythmik FV18 - Page 2 - AVS Forum | Home Theater Discussions And Reviews
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post #31 of 43 Old 10-01-2019, 12:53 PM
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Originally Posted by tvuong View Post
^^ Nah, it doesn't dig deep enough. A couple of these will do https://www.funkaudio.ca/blog

I might take 150db over some ulf...150+ db make all your hair and internal organs vibrate lol

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post #32 of 43 Old 10-01-2019, 01:01 PM
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Originally Posted by torii View Post
I might take 150db over some ulf...150+ db make all your hair and internal organs vibrate lol


Hell no. The Cap 4000’s , Funks or TV42’s should give him what he needs. ULF for the win
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post #33 of 43 Old 10-09-2019, 08:54 AM - Thread Starter
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Originally Posted by toddct View Post
Agreed with what Ray said. And although it's not the FV18, I'm going to leave a link to my 2400 vs. fv25 write up and the Houston GTG which we did have the FV18 aluminum cone.

2400/fv25 write up
https://www.avsforum.com/forum/113-s...l#post57334986

Houston GTG
https://www.avsforum.com/forum/61-ar...l#post56532406

You can't go wrong with any of the 3, it just really depends on what you are looking for and your listening habits.

Todd

Todd,


Can you listen at lower volumes, and still get sufficient TR from either the FV18s or Cap 2400ulf? I think that will be my deciding factor. I don't think I need 120 db. I am thinking more in the lines of around 95ish.


John
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post #34 of 43 Old 10-09-2019, 09:03 AM
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Originally Posted by john.odonnell01 View Post
Todd,


Can you listen at lower volumes, and still get sufficient TR from either the FV18s or Cap 2400ulf? I think that will be my deciding factor. I don't think I need 120 db. I am thinking more in the lines of around 95ish.


John
In order to get TR from subs you need increased DB or SPL. For 95db a pair if 15" subs like the FV15hp's would be more then sufficient. Imho it sounds like your best bet is a couple of smaller subs and some crowsons or a boss riser for TR.
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post #35 of 43 Old 10-09-2019, 09:30 AM
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Quote:
Originally Posted by john.odonnell01 View Post
Todd,


Can you listen at lower volumes, and still get sufficient TR from either the FV18s or Cap 2400ulf? I think that will be my deciding factor. I don't think I need 120 db. I am thinking more in the lines of around 95ish.


John
Hey John, unfortunately like basshead81 says, if you don't listen at very high levels and/or have your subs very hot, your TR is going to be lacking. IME, even at lower levels, you can hear a difference in their sound signatures but that is not the same as TR. If you don't listen very loud, then the idea of adding the Boss platform or buttkickers or crowsons is a great idea. Just FYI, these devices increase the TR without increasing the spl. You don't actually "listen" to them, you "feel" them. There are a few people that even have all 3. The FV15 is a great sub and duals would be awesome and more than enough for your space. Tony, @tvuong , has FV15s and the Boss platform, maybe he can chime in with his experience.

Hope that helps.

Todd

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post #36 of 43 Old 10-10-2019, 09:18 AM
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Quote:
Originally Posted by john.odonnell01 View Post
Last piece I need for my Home Theater is Subs. totally enclosed 16X18X8 (WxDxH) basement area. I am debating dual JTR Captivator 2400ULF vs dual Rythmik FV18. The Rythmiks look to be at least $1500 less when shipped. The lowest frequency is 10 vs 12hz. Movie/Music 70%/30%. Dolby Atmos setup 7.2.4. F/R revel F208s C-C208 Surround 4X W783 Atmos 4X C763L. I would appreciate any feedback.
Quote:
Originally Posted by john.odonnell01 View Post
Todd,

Can you listen at lower volumes, and still get sufficient TR from either the FV18s or Cap 2400ulf? I think that will be my deciding factor. I don't think I need 120 db. I am thinking more in the lines of around 95ish.

John
Quote:
Originally Posted by toddct View Post
Hey John, unfortunately like basshead81 says, if you don't listen at very high levels and/or have your subs very hot, your TR is going to be lacking. IME, even at lower levels, you can hear a difference in their sound signatures but that is not the same as TR. If you don't listen very loud, then the idea of adding the Boss platform or buttkickers or crowsons is a great idea. Just FYI, these devices increase the TR without increasing the spl. You don't actually "listen" to them, you "feel" them. There are a few people that even have all 3. The FV15 is a great sub and duals would be awesome and more than enough for your space. Tony, @tvuong , has FV15s and the Boss platform, maybe he can chime in with his experience.

Hope that helps.

Todd
I like that you are shooting for dual FV18/2400ulf in your small room and you do not even listen that loud (you think like one of us). I have similar room size as yours and have been very happy with dual FV15HPs for years. They can pound and shake my couch/room while sound super clean. I recently added an 8 drivers JBL12" BOSS platform to add TR at much lower listening level and it has been a huge upgrade in that department. I can definitely get great TR at 95db listening level with BOSS. In any forum, you will often see people blindly suggest product based on their bias for the stuff they own. I try to stay away from suggesting the best sub for anyone unless I actually already listen to the asked subs. Both of the 2400ulf/fv18 are great subs and have been tested over data-bass.com if you are into measurements and stuffs, but for the money, the Fv18 cannot be beaten. You will be very happy with either sub.
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post #37 of 43 Old 10-10-2019, 10:40 AM - Thread Starter
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Originally Posted by toddct View Post
Agreed with what Ray said. And although it's not the FV18, I'm going to leave a link to my 2400 vs. fv25 write up and the Houston GTG which we did have the FV18 aluminum cone.

2400/fv25 write up
https://www.avsforum.com/forum/113-s...l#post57334986

Houston GTG
https://www.avsforum.com/forum/61-ar...l#post56532406

You can't go wrong with any of the 3, it just really depends on what you are looking for and your listening habits.

Todd
Quote:
Originally Posted by toddct View Post
Hey John, unfortunately like basshead81 says, if you don't listen at very high levels and/or have your subs very hot, your TR is going to be lacking. IME, even at lower levels, you can hear a difference in their sound signatures but that is not the same as TR. If you don't listen very loud, then the idea of adding the Boss platform or buttkickers or crowsons is a great idea. Just FYI, these devices increase the TR without increasing the spl. You don't actually "listen" to them, you "feel" them. There are a few people that even have all 3. The FV15 is a great sub and duals would be awesome and more than enough for your space. Tony, @tvuong, has FV15s and the Boss platform, maybe he can chime in with his experience.

Hope that helps.

Todd

Thanks Todd, I was just curious. I asked because my son is autistic and very loud noise really bothers him. But I still want the ability to dig deep, especially when he is not around.
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post #38 of 43 Old 10-10-2019, 12:17 PM
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Originally Posted by john.odonnell01 View Post
Thanks Todd, I was just curious. I asked because my son is autistic and very loud noise really bothers him. But I still want the ability to dig deep, especially when he is not around.
All the subs mentioned dig pretty deep. Even the FV15. And once you get into the mid-bass, they are all really close.

This is directly from databass.


While the JTRs do go a bit deeper due to their lower tuning, the Rythmiks are very close. You won't be missing much in extension and likely gain some due to your smallish room. The spl differences can/will be mitigated if you are going duals. Any of them will be plenty loud. The sound signatures will be different too.

Like I said before, to get an idea of what's best for you, reach out and see if you can demo a JTR and Rythmik.
https://www.avsforum.com/forum/113-s...ts-thread.html
You could also post in each forum to see if anyone is reasonably close to you.

Keep in mind there is also a decent price difference between the JTR and Rythmik.

Todd
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post #39 of 43 Old 12-02-2019, 09:25 PM
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If I'm not mistaken aren't those numbers of the FV18 revision 1 with aluminum driver? Revision 2 with it's 4 inch ports and paper cone version would have even more output.
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post #40 of 43 Old 12-03-2019, 05:08 AM
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Originally Posted by Slickman View Post
If I'm not mistaken aren't those numbers of the FV18 revision 1 with aluminum driver? Revision 2 with it's 4 inch ports and paper cone version would have even more output.


Correct. Roughly 3db additional across.


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post #41 of 43 Old 12-03-2019, 09:46 AM
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Originally Posted by imureh View Post
Correct. Roughly 3db additional across.
That is incorrect.

The revision 2 - paper cone is +3dB above 40Hz or 50Hz vs FV18 revision 1 - aluminum driver.

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post #42 of 43 Old 12-03-2019, 09:48 AM
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Originally Posted by chucky7 View Post
That is incorrect.

The revision 2 - paper cone is +3dB above 40Hz or 50Hz vs FV18 revision 1 - aluminum driver.


Ok since you know what is it below? I know there is difference.


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post #43 of 43 Old 12-03-2019, 10:28 AM
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Originally Posted by imureh View Post
Ok since you know what is it below? I know there is difference.
Below, especially at the low end, cabinet volume, port tune and power matters more.

When all else being equal, a larger cabinet decreases the required port length. You can also increase power. However, when you double the power, you need 50% more X-Max.

Since the cabinet/port tune/power/driver X-Max didn't change much between rev 1 and rev 2, there should be virtually no difference below 40Hz.
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