Your Home Theater ULF Score - Page 88 - AVS Forum
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post #2611 of 2629 Old 10-17-2014, 10:33 AM
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What about the 24" @4400w in 15cuft?

So the question is would you prefer a slight loss in total output over extra extension. The blue line is quite LLT status.

Austin, are your HS24's d1 or d2's? You model with 4,400w. Do you own/use the clone fp14000? I forgot your amp situation.

My Dual 18" LLT subs 120dB down to 10hz

 

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post #2612 of 2629 Old 10-17-2014, 12:31 PM
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Why is 14hz in 130 cubic feet and 16hz in 30 cubic feet?

Also, my model looks absolutely nothing like yours. Using the T/S specs from the SI site. What are you using?

Last edited by notnyt; 10-17-2014 at 12:38 PM.
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post #2613 of 2629 Old 10-17-2014, 10:09 PM
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Quote:
Originally Posted by Scott Simonian View Post
What about the 24" @4400w in 15cuft?

So the question is would you prefer a slight loss in total output over extra extension. The blue line is quite LLT status.

Austin, are your HS24's d1 or d2's? You model with 4,400w. Do you own/use the clone fp14000? I forgot your amp situation.
D2's. Yes, I in this space I'd rather get what I can from 16Hz up. Probably should have spent more time trying to optimize the 14Hz tuned box in WinISD vs LLTing the $hit out of it...

I have...well, I will be getting another FP14K Clone, or maybe Bosso's A14K if I can get congressional approval to spend the extra dough.

Quote:
Originally Posted by notnyt View Post
Why is 14hz in 130 cubic feet and 16hz in 30 cubic feet?
I rushed it...

Spent a bit more time this morning and this is what I came up with.

14Hz vs 16Hz tune at 30ft^3




It does look pretty good, but still leaning towards the 16Hz tune for the extra output and shorter port length.

Quote:
Originally Posted by notnyt View Post
Also, my model looks absolutely nothing like yours. Using the T/S specs from the SI site. What are you using?
I attempted to input the TSP's directly from the SI website, but WinISD kept giving me an error. This is what I came up with after WinISD "fixed" itself.



Yours not look similar?
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post #2614 of 2629 Old 10-18-2014, 01:22 AM
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Were the models you posted earlier with those filters enabled? I thought the hump was from native response, but it was the filters.


Using the specs here: http://stereointegrity.com/product/hs24-24-subwoofer/

And the specs from Data-bass, they both model very similar, but nothing like yours.

Specs from si:


Specs from ricci:


both modeled at 30 cubic feet @ 15hz with 2kw


max output 14hz vs 16hz with specs from si and 4kw pe
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Last edited by notnyt; 10-18-2014 at 01:25 AM.
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post #2615 of 2629 Old 10-18-2014, 01:24 AM
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post #2616 of 2629 Old 10-18-2014, 01:34 AM
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And for fun...

2x lms ultra in blue
2x uxl18 in green
1x si 24 in red
tuned to 15hz
30 cubic feet

In reality, the port will limit the low frequency output more than the drivers. That doesn't take port compression into consideration.

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post #2617 of 2629 Old 10-18-2014, 08:22 AM - Thread Starter
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Quote:
Originally Posted by derrickdj1 View Post
Dom, I just added 4 ULF tranducers and one of the vented subs nearfield for the Tactile Score/listing. I have not been able to get on to database.com. I wonder if anyone else is having this problem out of curiosity.
Nice! What kind of transducers?
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post #2618 of 2629 Old 10-18-2014, 08:33 AM - Thread Starter
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Okay MK, here's what I have for you:



If you ported your nearfield subs...they would be at 10-11hz tune?

I think you should give it a try...my guess is that it will add more tactile feel to it, and certainly your 10hz score would be like your 5hz score! You don't need to do it certainly, but for science, I think you should try it to compare the tactile feeling...you can always seal it back up!

The downsides I see would be if your nearfield provided any tactile feeling below 10hz...but with your tune up front, I'd think you won't be missing much. And, you'll have to dial the two different tunes in because of phase cancellation.
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post #2619 of 2629 Old 10-18-2014, 10:47 AM
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Yeah that looks about right as I estimate. I just watched EoT at reference with subs 5 dBs hot and it was awesome. I can't believe the difference the amps and new drivers make. I was watching with receiver for a few months and I just switched out to the Adcom 850 watt monos and the difference is size of the sound! I love it. The bass is much stronger and you can tell much more sensitive than before. Remember running the IB 10 dBs hot? Well this setup sounds like that flat, maybe even stronger and running 8 dBs hot now is a whole new level. I pin the meter without 5 star movies!
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post #2620 of 2629 Old 10-18-2014, 11:02 AM
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Dom, I purchased the Aura transducers (6). I will try and see what I think. Thanks.

Klipsch RF 7 based HT 7.4, Pioneer SC 35, Acurus 200 Five, Dayton 18 Ultimxa Dual Sub Cab(2), Dayton 18 Ultimax Large Vented Sub Cab (2), on Berhinger I Nuke DPS amps, Samsung BDP F 7500, Asus/My Book Live HPC 4 TB

Yaquin VK 2100 amp, McIntosh XR 5 speakers, Samsung BDP F 7500
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post #2621 of 2629 Old 10-18-2014, 11:04 AM
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Quote:
Originally Posted by MKtheater View Post
Yeah that looks about right as I estimate. I just watched EoT at reference with subs 5 dBs hot and it was awesome. I can't believe the difference the amps and new drivers make. I was watching with receiver for a few months and I just switched out to the Adcom 850 watt monos and the difference is size of the sound! I love it. The bass is much stronger and you can tell much more sensitive than before. Remember running the IB 10 dBs hot? Well this setup sounds like that flat, maybe even stronger and running 8 dBs hot now is a whole new level. I pin the meter without 5 star movies!
I can't even imagine what that must have sounded like, lol. Excellent ULF score!

Klipsch RF 7 based HT 7.4, Pioneer SC 35, Acurus 200 Five, Dayton 18 Ultimxa Dual Sub Cab(2), Dayton 18 Ultimax Large Vented Sub Cab (2), on Berhinger I Nuke DPS amps, Samsung BDP F 7500, Asus/My Book Live HPC 4 TB

Yaquin VK 2100 amp, McIntosh XR 5 speakers, Samsung BDP F 7500
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post #2622 of 2629 Old 10-18-2014, 11:11 AM
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My friend Ed has been my biggest helper since the beginning and he just watch EoT and some demos and he even said WTF! He has experienced every single different setup I have tried.
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post #2623 of 2629 Old 10-18-2014, 12:01 PM
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Quote:
Originally Posted by popalock View Post
D2's. Yes, I in this space I'd rather get what I can from 16Hz up. Probably should have spent more time trying to optimize the 14Hz tuned box in WinISD vs LLTing the $hit out of it...

I have...well, I will be getting another FP14K Clone, or maybe Bosso's A14K if I can get congressional approval to spend the extra dough.


I rushed it...

Spent a bit more time this morning and this is what I came up with.

14Hz vs 16Hz tune at

It does look pretty good, but still leaning towards the 16Hz tune for the extra output and shorter port length.



I attempted to input the TSP's directly from the SI website, but WinISD kept giving me an error. This is what I came up with after WinISD "fixed" itself.



Yours not look similar?
also what does the port velocity look like with those filters?
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post #2624 of 2629 Old 10-18-2014, 12:36 PM - Thread Starter
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Quote:
Originally Posted by derrickdj1 View Post
Dom, I purchased the Aura transducers (6). I will try and see what I think. Thanks.
Those aura's likely won't do anything in the ULF frequencies. I think their good to 25-30hz or so...

Prove me wrong though...when you get them, run some sweeps and see what you get. I have Clark Synthesis T215s on my outer seats, and they are supposed to go to 16hz or so. I find they stop at 20hz.
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post #2625 of 2629 Old 10-19-2014, 02:00 PM - Thread Starter
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V17.4 of the ULF Calculator now available. Post 1 and 2 updated.

  • 5hz ULF Card Template now available (manually populate)
  • Sorting changed for Stars and ULF score. Now weights those with at least reference to 16hz higher than those that aren't ref capable to 16hz. My subjective view here is that under typical listening conditions, those systems will have a better overall ULF experience.
  • New members: @mtbdudex , @Ted Sheckler , @bass addict
  • Updated members: @MKtheater , @Spanglo , @JapanDave
  • New low for ULF Score at 5hz: 33 for mktheater!


New SI Conversions from data-bass.com:



New estimated SI conversions:


Member ULF Stars


Member ULF Scores


Member ULF SI Equivalents


Member Tactile Feedback FX
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post #2626 of 2629 Old 10-19-2014, 06:22 PM
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I should clarify my transducers, the Aura Pro and the Dayton 250 watt amp/s.

Klipsch RF 7 based HT 7.4, Pioneer SC 35, Acurus 200 Five, Dayton 18 Ultimxa Dual Sub Cab(2), Dayton 18 Ultimax Large Vented Sub Cab (2), on Berhinger I Nuke DPS amps, Samsung BDP F 7500, Asus/My Book Live HPC 4 TB

Yaquin VK 2100 amp, McIntosh XR 5 speakers, Samsung BDP F 7500
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post #2627 of 2629 Old Yesterday, 04:49 PM - Thread Starter
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post #2628 of 2629 Old Yesterday, 04:53 PM
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I have installed 4 shakers in the couch. Using Real Traps test tones the shakers are first notice at 11-12 Hz and become very strong at around 14-16 Hz. The test was done 10 db below deference. A quick demo of WOTW at 5 below reference made the couch feel like it was coming apart with massive vibration. I don't know how to get a FR on the shakers since I don't have REW.

I think they are a nice addition to my HT. XO at 40 Hz, they don't call attention to themselves with music which is great.

Klipsch RF 7 based HT 7.4, Pioneer SC 35, Acurus 200 Five, Dayton 18 Ultimxa Dual Sub Cab(2), Dayton 18 Ultimax Large Vented Sub Cab (2), on Berhinger I Nuke DPS amps, Samsung BDP F 7500, Asus/My Book Live HPC 4 TB

Yaquin VK 2100 amp, McIntosh XR 5 speakers, Samsung BDP F 7500

Last edited by derrickdj1; Yesterday at 05:24 PM.
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post #2629 of 2629 Old Yesterday, 04:58 PM - Thread Starter
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Quote:
Originally Posted by lbrown105 View Post
^Dominguez thanks, someone on this thread thinking a bass set up is insane really says a lot, since this is the craziest bass thread on AVS! I do love the OS subs and they are a lot of fun. Even though I knew the OS was not designed for the types of frequencies many on this thread have I though it would be fun to input the data and see what it says.


Also thanks for the information. Let me try these in paint. I am attaching my ULF score and the measurements Jeff listed on his website. You can see even the ULF version falls off pretty fast after 22hz without room gain.

Quote:
Originally Posted by lbrown105 View Post
Yes I believe the OS LFU measurement was 1M at arbitrary level. Max output is 133dB. Below is the measurement for the Cap S again arbitrary level and I believe 1M




JTR Cap S
I've taken another shot at re-estimating the JTR line...does this look to be in the ballpark?

I basically used the Cap S1 (based on a UXL estimate: probably optimistic here) and increased the db based on what the tune of the Captivator was. Conservatively, 10db up at tune, and if around tune then I adjust 1-3db or so. Below tune I typically drop 12-13db.



Thoughts?

What should the OS LFU be? Still struggling with this one...we know above 20hz OS is 6db higher, and below 20hz S2 is 6db higher...those are averages above and below though, so would perhaps at 20hz they are roughly equal?
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