Rythmik FV15HP vs Passive Captivator/EP4000 for low extension - Page 2 - AVS Forum
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post #31 of 54 Old 09-12-2012, 05:14 PM
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@ dominguez1

Maybe this can help

Rythmik FV15HP and E15 in 14hz mid damping plus room gain.
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post #32 of 54 Old 09-12-2012, 07:15 PM - Thread Starter
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Quote:
Originally Posted by TimVG View Post


I missed this one, sorry!
Well I was going to order an S2 at first, but I figured plugging ports works well for so many other subs, why not this model. It's a matter of physics afterall. And it does work, even though JTR advises against it. So now I have the choice between a pair of subs tuned at 17,5hz - 11hz or completely sealed, which I have tried also and works just great (just not in my room, but the concept remains the same)
I'm not sure how much output you can get with a normal captivator in it's default tuning mode, but you lose about 6db in that range when you use the alternate tune. You do gain a lot of output below 17,5hz though.

Would love to see pics of the plug and sub!!! biggrin.gif

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post #33 of 54 Old 09-12-2012, 07:16 PM - Thread Starter
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Originally Posted by BOTBOTCHAI. View Post

@ dominguez1
Maybe this can help

Rythmik FV15HP and E15 in 14hz mid damping plus room gain.

That's crazy impressive. What size room? In the basement or on a suspended floor? Is the E15 sealed?

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post #34 of 54 Old 09-12-2012, 08:00 PM
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that is very impressive......

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post #35 of 54 Old 09-12-2012, 11:04 PM
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smile.gif Small room (1000 m3) . Yes, the Rythmik E15 is sealed sub. The bass are more feel than heard:biggrin.gif Even my buddy dual FV15HP and F15HP never come close.
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post #36 of 54 Old 09-13-2012, 09:14 AM
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Quote:
Originally Posted by BOTBOTCHAI. View Post

smile.gif Small room (1000 m3) . Yes, the Rythmik E15 is sealed sub. The bass are more feel than heard:biggrin.gif Even my buddy dual FV15HP and F15HP never come close.
When it comes to bass...size does matter. Small room and nearfield biggrin.gif
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post #37 of 54 Old 09-13-2012, 05:03 PM - Thread Starter
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Quote:
Originally Posted by BOTBOTCHAI. View Post

smile.gif Small room (1000 m3) . Yes, the Rythmik E15 is sealed sub. The bass are more feel than heard:biggrin.gif Even my buddy dual FV15HP and F15HP never come close.

Hmmm...

 

Isn't a 1000 cubic meters = to ~35,000 cubic feet??? confused.gif

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post #38 of 54 Old 09-13-2012, 08:37 PM
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Have you measured just your outlaws than just your FTW-21's? Also do a compression sweep on both and see when and where they start to compress on their own. You can figure this out. Why not just build a massive 10hz sub with a ported FTW-21? Maybe with a UXL-18 to be smaller. This only if we find out you like ported. What movie scenes does this occur at? Have you tried running sine waves to see what frequency this happens at? I would start to find out what frequency range and then find out the response of each set of subs with compression sweeps.
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post #39 of 54 Old 09-13-2012, 11:01 PM
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smile.gif Thank Capricorn Kid
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post #40 of 54 Old 09-13-2012, 11:02 PM
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Typo (1000c3)
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post #41 of 54 Old 09-14-2012, 10:21 AM
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EDIT: wrong thread deleted
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post #42 of 54 Old 09-14-2012, 11:24 AM
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Quote:
Originally Posted by dominguez1 View Post

Would love to see pics of the plug and sub!!! biggrin.gif

I'll try and borrow a camera to make some pics, ipod camera isn't clear enough.
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post #43 of 54 Old 09-14-2012, 03:32 PM - Thread Starter
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Originally Posted by BOTBOTCHAI. View Post

Typo (1000c3)

confused.gif

 

1000 cubic centimeters?

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post #44 of 54 Old 09-14-2012, 03:33 PM - Thread Starter
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Quote:
Originally Posted by TimVG View Post


I'll try and borrow a camera to make some pics, ipod camera isn't clear enough.

That would be great. Seems like a super easy upgrade/test for existing cap owners...

 

How big is your room?

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post #45 of 54 Old 09-14-2012, 04:19 PM
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@ Skylinestar

Did you try your dual FV15HP nearfield biggrin.gif
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post #46 of 54 Old 09-14-2012, 04:21 PM
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Quote:
Originally Posted by dominguez1 View Post

confused.gif

1000 cubic centimeters?
1000cf tongue.gif
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post #47 of 54 Old 09-17-2012, 06:59 AM
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what's a cf?
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post #48 of 54 Old 09-17-2012, 07:02 AM
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what's a cf?

Cubic feet ? Although that wasn't my first thought. smile.gif

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post #49 of 54 Old 09-17-2012, 07:41 AM
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Quote:
Originally Posted by BOTBOTCHAI. View Post

@ dominguez1
Maybe this can help

Rythmik FV15HP and E15 in 14hz mid damping plus room gain.

What mic was used?
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post #50 of 54 Old 09-17-2012, 04:06 PM
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Originally Posted by MKtheater View Post

What mic was used?
Radio Shack SPL meter . Below is my buddy REW graph (Dual FV15HP and F15HP ) with the same sound card and SPL meter.
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The generic correction files makes the bass 10 dBs hot at 10hz in my room and turn the volume up and that below 10hz stuff will go away. I had a rising response as well which in fact was the opposite with a properly calibrated mic. Clear the correction file and pick C-weighting for a more accurate measurement.
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post #52 of 54 Old 09-17-2012, 06:36 PM - Thread Starter
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Quote:
Originally Posted by MKtheater View Post

Have you measured just your outlaws than just your FTW-21's? Also do a compression sweep on both and see when and where they start to compress on their own. You can figure this out. Why not just build a massive 10hz sub with a ported FTW-21? Maybe with a UXL-18 to be smaller. This only if we find out you like ported. What movie scenes does this occur at? Have you tried running sine waves to see what frequency this happens at? I would start to find out what frequency range and then find out the response of each set of subs with compression sweeps.

Missed this one...

 

Yes, I have just measured the outlaws. I extend to 12-13hz with just my outlaws in max extension mode.

 

Unfortunately, my DIY skills went by the wayside when eD fell apart. Still looking to source similar quality/tooling custom vendor for boxes to help us DIY wanna be's out...

 

It occurs very noticeably at the Pulse movie scene (heart beat). I also picked it up in Hunger Games at reference when they were reading off the names. And the latest movie was Wrath of the Titans when they were entering the maze. All of those movie scenes have relatively quiet 25hz and up bass compared to the low stuff I believe. When there is lots of bass playing all at once (WOTW, etc.) you can't hear the chuffing at all.

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post #53 of 54 Old 09-17-2012, 06:56 PM
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Quote:
Originally Posted by MKtheater View Post

The generic correction files makes the bass 10 dBs hot at 10hz in my room and turn the volume up and that below 10hz stuff will go away. I had a rising response as well which in fact was the opposite with a properly calibrated mic. Clear the correction file and pick C-weighting for a more accurate measurement.
Thank for the tip MKtheater smile.gif The mic was in C-weighting when i take the measurement wink.gif
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post #54 of 54 Old 09-17-2012, 07:00 PM
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Quote:
Originally Posted by dominguez1 View Post

Missed this one...

Yes, I have just measured the outlaws. I extend to 12-13hz with just my outlaws in max extension mode.

Unfortunately, my DIY skills went by the wayside when eD fell apart. Still looking to source similar quality/tooling custom vendor for boxes to help us DIY wanna be's out...

It occurs very noticeably at the Pulse movie scene (heart beat). I also picked it up in Hunger Games at reference when they were reading off the names. And the latest movie was Wrath of the Titans when they were entering the maze. All of those movie scenes have relatively quiet 25hz and up bass compared to the low stuff I believe. When there is lots of bass playing all at once (WOTW, etc.) you can't hear the chuffing at all.
dominguez1 did u try Hellboy 2 The Golden Army scenes (0:14:34)
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