Your Home Theater ULF Score - Page 76 - AVS Forum
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post #2251 of 2277 Old Yesterday, 10:06 AM
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dom, here is what I have for tactile feedback:
* Transducers (ULF capable): Buttkicker LFE (1/seat,3 total)
* Nearfield Ported
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post #2252 of 2277 Old Yesterday, 10:28 AM
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Quote:
Originally Posted by popalock View Post
2,968 @ 20Hz.
I'll just have to sit back and enjoy the show.
You turned your outtie into an innie all for the mighty dollar. The surgery must have been painful. Perhaps you can measure depth instead of length, tomato tomato?
That said: if dual 24's could ever be considered weak, then we are all doomed...
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post #2253 of 2277 Old Yesterday, 01:13 PM
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I am on the second floor in my house and this is probably why the bass shakes my floors violently!

MY THEATER......The Thompson Theater 11.9 channels

"Is not love not unlike the unlikely not it is unlikened to?"
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post #2254 of 2277 Old Yesterday, 02:20 PM
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Was nearfield sub placement define.

Klipsch RF 7 based HT 7.4, Pioneer SC 35, Acurus Five 200 amp, Chase SS 18.2(2), VS 18.1(2), Samsung BDP F 7500, Asus/My Book Live HPC 4 TB

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post #2255 of 2277 Old Yesterday, 04:55 PM
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Here's my 5HZ contribution...

This chart shows all my subs playing and the red is all my subs EQ'd with a MiniDSP. (4x FTW21's and 4x SI18's)
Please note this graph has NO SMOOTHING applied

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File Type: jpg eq.jpg (135.7 KB, 39 views)
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post #2256 of 2277 Old Yesterday, 05:24 PM - Thread Starter
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Quote:
Originally Posted by laugsbach View Post
I have a riser on my first row allowing me to "float" the theater chairs for even more tactile feedback...
When did you build the riser??? ^^^This guy loves the TF FX! Looking forward to getting a new demo!

Quote:
Originally Posted by ellisr63 View Post
dominguez1... I have a suspended floor, and my MLP is on top of one of the DTS-10 subs... MLP is about 2' in front of the opening for the DTS-10. I don't know if that effects the score or not.
Awesome...I've always thought about doing this! You get:
  • Nearfield Horn
  • Suspended Floor

Although it technically is a riser...it's probably not conducive to vibration since the box is not meant to move! Riser that are built like tanks actually don't add to the TF FX, but loosely built ones do.

Either way, the combination of the two, it must feel like your having an earth quake with every movie.

Quote:
Originally Posted by basshead81 View Post
This is my favorite thread!! Just thought I would share lol.
Thanks Bass! You participate in a ton of threads, so that's pretty meaningful!
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post #2257 of 2277 Old Yesterday, 05:31 PM - Thread Starter
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Quote:
Originally Posted by Luke Kamp View Post
Always liked this thread and dominguez1's exploration of the depths. Time to join the fun.
10' wide
8' 6" ft height (measured top boundary as floor above, bass doesn't care about my drop ceiling)
17' 6" length

1487.5 cubic feet
4 SI HT 18" d2 sealed enclosures on Peavey IPR2 7500
ULF score of 372 at 10 hz and up. This graph is nearfield driver vs. in seats with no eq, naked response.



I have a riser and near-field sealed.
Glad you joined Luke! Welcome to the party.

ULF Card below:

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File Type: png Luke Kamp ULF Card.png (11.7 KB, 34 views)
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post #2258 of 2277 Old Yesterday, 06:00 PM - Thread Starter
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Quote:
Originally Posted by BassThatHz View Post
Looks good, except you have me listed as non-DIY though.

What is the maximum distance allowed to the golden-seat to be considered near-field... 3ft from ear XYZ 3D-axis or just 2d distance?
I would imagine that that would exclude a lot of people that have multi-rows and/or if their golden seat isn't in the back-row with a sub eating their face (unless they have a VOG IB sub hanging from their ceiling that "somehow" doesn't interfere with their projector beam... LOL!)

I only have one row (at the moment) but my extreme left and right seats each have a sealed 21" sub that is within 4ft on the width-axis, but that's 7ft from the golden seat so I guess it would be excluded. Two of my UM-15's are within 7ft of the golden seat too.
In theory those guest seats would have slightly more bass than the golden seat does... how strange!

If we are taking distance into consideration, I have 20 subs all within 15ft of ANY seat, with the average distance being 10ft to 10 subs from ANY seat, so the "density" is fairly HIGH when you look at it from a distance perspective.
You mean you didn't spend $40K commercially on all your subs? Will fix it on the next update!

Regarding the distance...hmmm, I guess I'd have to say 4ft max.

You make a good point for folks with nice big fancy HT rooms. Aesthetics put a damper on optimal shakability unless you go ellis way and do the DTS10 as the riser. I went with the Golden Seat because I'm most interested in what that experience is like as opposed to the other seats. When I think about the ULF score, I imagine walking into your HT Room, you directing me where the best seat is, me sitting down, and then going through the barrage of demos to experience your ULF.

It's the tradeoff...some sacrifice the money seat to have a more even response/experience across all seats. Other sacrifice the other seats, to dial in the best experience possible. Some are lucky enough to have it all!

Quote:
Originally Posted by BassThatHz View Post
popalock probably has some of the highest "density" of all members, with something like: 4 18's within 4ft of ANY seat, 8 18's within 7ft average, and all 16 within 15ft of ANY seat. (I think?)

If my memory is correct, MK and N8 have fairly high densities too...



I think you should collect the average distance ("density") from all member's systems, and come up with a way to try to use that in calculating a "real-world" in-room SPL score, based on room volume and average distance to LP. Might be interesting to compare the theoretical-groundplane score to something more approximating a real-world type score.

There might even be an approximate correlation pattern between groundplane and such a real-world score I'd wager.
-6db for every doubling of distance, plus some sort of pressure vessel curve added etc; whatever algorithm is best.
I've thought about this too...I'm sure there is a more scientific way to go about this, but that would require collecting a lot more data and I wanted to keep this simple. For those that are that serious about really wanting to know, there's no replacement for good measuring gear (like yourself!)!
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post #2259 of 2277 Old Yesterday, 06:07 PM - Thread Starter
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Quote:
Originally Posted by popalock View Post
Thought I would correct your post.

Dom, can you update my score. I just calculated the volume of my new space. Two (2) SI24's in roughly 16,621ft^3 of open concept living should theoretically put at 2,968 @ 20Hz.

I guess I'll be out of the penis measurement game for a few years.

I'll just have to sit back and enjoy the show.

LOL

You know what the incredible thing is with that kind of displacement for those 24's? See below...



Now granted, you likely have zero room gain and more closely resemble the ground plane estimates...but still, reference to 12.5hz in that size room??? Crazy...
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post #2260 of 2277 Old Yesterday, 06:08 PM
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Quote:
Originally Posted by dominguez1 View Post
When did you build the riser??? ^^^This guy loves the TF FX! Looking forward to getting a new demo!



Awesome...I've always thought about doing this! You get:
  • Nearfield Horn
  • Suspended Floor

Although it technically is a riser...it's probably not conducive to vibration since the box is not meant to move! Riser that are built like tanks actually don't add to the TF FX, but loosely built ones do.

Either way, the combination of the two, it must feel like your having an earth quake with every movie.


Thanks Bass! You participate in a ton of threads, so that's pretty meaningful!
If you want to feel the bass those are the seats to sit in!

Denon 4520ci, 3 JBL 2360As/EV DHA-1s, 3 1/4 Pie bass bins, MiniDSP 2x4s, 4 Klipsch HIPs, 2 Klipsch KP3002s, PS3, XBox 360, 3 Intel NUCs, Monoprice Redmere, Monster HTPS7000, 2 SUPER SPUD subs, Panasonic AE8000u, and a Yamaha P7000s.
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post #2261 of 2277 Old Yesterday, 06:12 PM - Thread Starter
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Quote:
Originally Posted by MiniHT View Post
Dom, I'm on a suspended floor. Thanks for the update!
Your room has to be damn impressive...842 cubes, 2 Cap S2s, and a suspended floor? One I'd like to demo for sure...

Quote:
Originally Posted by MKtheater View Post
Yeah, but these type of threads are fun. There used to be a spl at LP during certain scenes thread a while ago.


My new seating arrangement has 5 seats going across the front row on a riser. The back row is for kids on another riser. The two subs in the back take up everything else back there so they take up 4 seats across which means they are directly behind 4 of the 5 seats and less than a foot from the top of the seats. Of course they are not finished yet so they are big ugly surround stands for now. I will port them at 10hz because as anyone can see when you run sealed subs nearfield they don't get the low end boost unless you EQ the crap out of them. I won't need to do that with the port but they won't add much to the 5hz rating either. they will add 2 Si at 5hz each rather than the 8 Si at 10hz each. I probably won't need more than 100 watts for them to blast me.
Can't wait to hear the new setup...what did you decide for up front?
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post #2262 of 2277 Old Yesterday, 06:17 PM - Thread Starter
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Quote:
Originally Posted by ahmedreda View Post
dom, here is what I have for tactile feedback:
* Transducers (ULF capable): Buttkicker LFE (1/seat,3 total)
* Nearfield Ported
Very nice...the FV15HPs are tactile monsters in the nearfield...ask me how I know. I'm guess the LFE's fill the less than 10hz stuff very nicely.

Quote:
Originally Posted by Pain Infliction View Post
I am on the second floor in my house and this is probably why the bass shakes my floors violently!
If I ever build another house or move into another one...HT's is going on a suspended floor. I think it's probably best over a garage...less prone for things to break, pictures to fall, etc.

Quote:
Originally Posted by derrickdj1 View Post
Was nearfield sub placement define.
4ft or less.
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post #2263 of 2277 Old Yesterday, 06:20 PM - Thread Starter
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Quote:
Originally Posted by Fatshaft View Post
Here's my 5HZ contribution...

This chart shows all my subs playing and the red is all my subs EQ'd with a MiniDSP. (4x FTW21's and 4x SI18's)
Please note this graph has NO SMOOTHING applied

^^^This is incredible. No smoothing? Wow.

Welcome to the 5hz club Fat!
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post #2264 of 2277 Old Yesterday, 06:43 PM
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Quote:
Originally Posted by Fatshaft View Post
Here's my 5HZ contribution...

This chart shows all my subs playing and the red is all my subs EQ'd with a MiniDSP. (4x FTW21's and 4x SI18's)
Please note this graph has NO SMOOTHING applied

Absolute Insane response!!
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post #2265 of 2277 Old Yesterday, 06:51 PM - Thread Starter
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post #2266 of 2277 Old Yesterday, 07:01 PM
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Hey Dom, I was choking off my subs with too much EQ. I took away 10-15 dBs which I did not need to do. I am buying 12 SI subs for the front wall and maybe port them if it works. Porting adds 6 dBs at 5 hz and 13 dBs at 10hz! That is over 12 sealed Si's. I hope it works this time. If it does not I will end up with 12 SI up front still but with the rear ported subs added. I have to buy the drivers and extra amp for the rear subs.
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post #2267 of 2277 Old Yesterday, 07:16 PM
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Quote:
Originally Posted by ahmedreda View Post
How does the buttkicker LFE compare to the Crowsons. I noticed you have both.
Head over to this thread:

The "Official" Crowson Tactile Motion Actuators Thread.

I have three posts in a row with a detailed review of the different "shakers" I have used...starting at post number 241.
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post #2268 of 2277 Old Yesterday, 07:26 PM
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Quote:
Originally Posted by dominguez1 View Post
If I ever build another house or move into another one...HT's is going on a suspended floor. I think it's probably best over a garage...less prone for things to break, pictures to fall, etc.

I think that I would love to have a basement for my theater as long as I have some ceiling height. 8' would be my minimum but anything less than 9' would feel weird to me I would guess. Loosing the floor movement would suck though, but having the ability to have a lobby area really intrigues me.

MY THEATER......The Thompson Theater 11.9 channels

"Is not love not unlike the unlikely not it is unlikened to?"
- Leon Phelps
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post #2269 of 2277 Old Yesterday, 07:30 PM
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Quote:
Originally Posted by dominguez1 View Post
If I ever build another house or move into another one...HT's is going on a suspended floor. I think it's probably best over a garage...
+1

This is exactly what Bosso has and his demo is still number one in my bass book!
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post #2270 of 2277 Old Yesterday, 07:53 PM
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Quote:
Originally Posted by dominguez1 View Post
^^^This is incredible. No smoothing? Wow.

Welcome to the 5hz club Fat!
Thanks...I've decided.........................
Next year I'll be replacing my 4x SI18's with 4x SI24's !!!!
I can't wait!!!

Quote:
Originally Posted by basshead81 View Post
Absolute Insane response!!
Thank you kindly
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post #2271 of 2277 Old Yesterday, 08:13 PM
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Your Home Theater ULF Score

Quote:
Originally Posted by Fatshaft View Post
Thanks...I've decided.........................
Next year I'll be replacing my 4x SI18's with 4x SI24's !!!!
I can't wait!!!


Thank you kindly

From one Canuck to another I think you should sell me your FTW-21's then!...lol

My Gear:

JTR Noesis 228HT (LCR)
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post #2272 of 2277 Old Yesterday, 08:16 PM
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Quote:
Originally Posted by dominguez1 View Post
Very nice...the FV15HPs are tactile monsters in the nearfield...ask me how I know. I'm guess the LFE's fill the less than 10hz stuff very nicely.

I wish I could run my ported monsters nearfield, that would be a LOT of fun.

My Gear:

JTR Noesis 228HT (LCR)
Axiom Audio QS8 surrounds
Sherbourn PA 7-350
Pioneer VSX-21TXH
JVC RS45
Falcon Screens FVHD105
Dual PSA XS30's (gone but not forgotten)
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post #2273 of 2277 Old Yesterday, 08:22 PM
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Originally Posted by jbrown15 View Post
From one Canuck to another I think you should sell me your FTW-21's then!...lol
No can do...I'm selling the SI18's ONLY!
In other words, I'll be running 4x FTW21's in the front and 4x SI24's in the back!

I can't wait...but I have to
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post #2274 of 2277 Old Yesterday, 08:27 PM
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Quote:
Originally Posted by Fatshaft View Post
No can do...I'm selling the SI18's ONLY!
In other words, I'll be running 4x FTW21's in the front and 4x SI24's in the back!

I can't wait...but I have to

That's okay, I was mostly kidding. I'm looking a replacing my back row of powered seats with something else which should free up enough room to install a low profile but extremely wide ported sub that will fit behind the seats. So I'll probably buy another UXL-18 to use. So I'll have one large ported sub nearfield, but it'll mostly be to help smooth out my room response a little more.
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My Gear:

JTR Noesis 228HT (LCR)
Axiom Audio QS8 surrounds
Sherbourn PA 7-350
Pioneer VSX-21TXH
JVC RS45
Falcon Screens FVHD105
Dual PSA XS30's (gone but not forgotten)
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post #2275 of 2277 Old Today, 07:28 AM
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Fatshaft,
I will buy those 18's!


Dom,
I can't input any numbers into the new calculator.
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post #2276 of 2277 Old Today, 07:50 AM - Thread Starter
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Quote:
Originally Posted by MKtheater View Post
Fatshaft,
I will buy those 18's!


Dom,
I can't input any numbers into the new calculator.
What's the problem? The yellow cells won't let you input anything?
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post #2277 of 2277 Old Today, 07:53 AM
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Quote:
Originally Posted by MKtheater View Post
Fatshaft,
I will buy those 18's!


Dom,
I can't input any numbers into the new calculator.

You overloaded the calculator.. too many 18's...
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