WOTW--Lightning Scene--Subwoofer Test

Be sure to read this because I changed some things!!!!

First, you need War of the Worlds and I want you to use the DTS track.
(If you do not have a DTS decoder, then I guess you'll have to do DD).

Second...the entire scene is from 15:25 to 16:40, but I found that the strongest SPL always came from the same spot...15:52. Tom Cruise says "oh say can you see" and then BOOM it hits!!!!

Also...timestamp 16:13 and 16:30 They both produced some very LOW frequencies....not as much SPL...but a good measure of the LOW end of our subs..

THRID----PLEASE KNOW THIS IS A LOUD TRACK, so start your testing at a lesser volume....like -15db MV!!!!

Fourth--I attached the exact waterfall and it is labeled....be sure to read the bottom

Here is the waterfall ...

For this thread I think we should post the exact timestamp of the scene that gives us our HIGHEST SPL too...
____________________________________________________________ _____

So take out Your SPL meter and play Chapter 4 15:25 to 16:40. Lightning scene.


Some things I learned to be sure of when using the SPL meter.
1. Use C-weighting FAST for this peak test
2. Use the MAX button if you have a digital Meter
____________________________________________________________ _____

I'm curious about a few things.
1. db registered using C-rating Fast and MAX (if avalible) from Listening Position...Just post exactly what the SPL shows
2. db from 1 meter away
3. **TIMESTAMP of the HIGHEST reading and did you use DTS or DD**********
4. Room size cubic feet
5. What subwoofer set up are you running?
6. What setting of Master Volume and what do you have your sub dialed in at?
****Note....when running this test turn off main speakers if possible so you are just measuring the subwoofer output


BGILLYJCU----Using 16hz tune and main speakers OFF
1. 106db LP
2. 111db 1meter
3. Timestamp 15:52 in DTS
4. 2300cuft (not sealed due to open doorway)
5. A single SVS 16-46Plus
6. Master Volume -15db Sub calibrated to 72db on SPL meter (uncorrected)

1. 108db LP
2. 114db 1meter
3. Timestamp 15:52 in DTS
4. 2300cuft (not sealed due to open doorway)
5. A single SVS 16-46Plus
6. Master Volume -13db Sub calibrated to 72db on SPL meter (uncorrected)

1. 110db LP
2. 115db 1meter
3. Timestamp 15:52 in DTS
4. 2300cuft (not sealed due to open doorway)
5. A single SVS 16-46Plus
6. Master Volume -11db Sub calibrated to 72db on SPL meter (uncorrected)

1. 112db LP
2. 117db 1meter
3. Timestamp 15:52 in DTS
4. 2300cuft (not sealed due to open doorway)
5. A single SVS 16-46Plus
6. Master Volume -9db Sub calibrated to 72db on SPL meter (uncorrected)

1. 101db from LP
2. xxxxx
3. Timestamp 16:13 in DTS
4. 2300cuft (not sealed due to open doorway)
5. A single SVS 16-46Plus
6. Master Volume -9db Sub calibrated to 72db on SPL meter (uncorrected)

1. 107db from LP
2. xxxxx
3. Timestamp 16:30 in DTS
4. 2300cuft (not sealed due to open doorway)
5. A single SVS 16-46Plus
6. Master Volume -9db Sub calibrated to 72db on SPL meter (uncorrected)


Pittdog1
1. 108 @ LP
2. 110 @ 1 meter
3. Timestamp 15:52 in DTS
4. 1640 cuft (4' doorway into 12'X12' kitchen-no door to seal)
5. Klipsch Sub 12
6. Master volume set to -15 (calibrated to 75db @ 0 mv) sub is cal'd at 77db.

1. 111 @ LP
2. 113 @ 1 meter
3. Timestamp 15:52 in DTS
4. 1640 cuft (4' doorway into 12'X12' kitchen-no door to seal)
5. Klipsch Sub 12
6. Master Volume -11 (calibrated to 75db @ 0 mv) sub is cal'd at 77db.

Gordan1080p
1. 114dB @ LP
2. 118dB @1m
3. 15:52 in DTS
4. 4,800 ft3 with a stairwell opening to upstairs
5. Single VTF-3 MK3 (18Hz tuning no turbo)
6. Master volume at -10dB, sub only

frockc
1. 102db analog/ 105db digital LP
2. 110db analog/ 113db digital 1meter
3. Timestamp 15:52 in DTS
4. 4000-4500cuft first floor of townhome open to upstairs
5. A single JL fathom 113
6. Master V -15db Sub calibrated to 75db on SPL meter (uncorrected) at 0MV

1. 104db analog/ 107db digital LP
2. 114db analog/ 116db digital 1meter
3. Timestamp 15:52 in DTS
4. 4000-4500cuft first floor of townhome open to upstairs
5. A single JL fathom 113
6. Master V -12db Sub calibrated to 75db on SPL meter (uncorrected) at 0MV

1. 105db analog/ 108db digital LP
2. 114db analog/ 116db digital 1meter
3. Timestamp 15:52 in DTS
4. 4000-4500cuft first floor of townhome open to upstairs
5. A single JL fathom 113
6. Master Volume -9db Sub calibrated to 75db on SPL meter (uncorrected) at 0MV

1. 91db analog/ 94db digital LP
2. 95db analog/ 101db digital 1meter
3. Timestamp 16:13 in DTS
4. 4000-4500cuft first floor of townhome open to upstairs
5. A single JL fathom 113
6. Master V -15db Sub calibrated to 75db on SPL meter (uncorrected) at 0MV

1. 95db analog/ 99db digital LP
2. 100db analog/ 105db digital 1meter
3. Timestamp 16:13 in DTS
4. 4000-4500cuft first floor of townhome open to upstairs
5. A single JL fathom 113
6. Master V -12db Sub calibrated to 75db on SPL meter (uncorrected) at 0MV

1. 98db analog/ 101db digital LP
2. 103db analog/ 107db digital 1meter
3. Timestamp 16:13 in DTS
4. 4000-4500cuft first floor of townhome open to upstairs
5. A single JL fathom 113
6. Master Volume -9db Sub calibrated to 75db on SPL meter (uncorrected) at 0MV

1. 96db analog/ 100db digital LP
2. 106db analog/ 108db digital 1meter
3. Timestamp 16:30 in DTS
4. 4000-4500cuft first floor of townhome open to upstairs
5. A single JL fathom 113
6. Master V -15db Sub calibrated to 75db on SPL meter (uncorrected) at 0MV

1. 100db analog/ 103db digital LP
2. 108db analog/ 112db digital 1meter
3. Timestamp 16:30 in DTS
4. 4000-4500cuft first floor of townhome open to upstairs
5. A single JL fathom 113
6. Master V -12db Sub calibrated to 75db on SPL meter (uncorrected) at 0MV

1. 104db analog/ 106db digital LP
2. 111db analog/ 115db digital 1meter
3. Timestamp 16:30 in DTS
4. 4000-4500cuft first floor of townhome open to upstairs
5. A single JL fathom 113
6. Master Volume -9db Sub calibrated to 75db on SPL meter (uncorrected) at 0MV

MKtheater
1. 122db LP(8 feet)
2. N/A 1meter
3. Timestamp 15:52 in DTS
4. 2300cuft (sealed)
5. Dual 18 inch horn loaded subs with a Sampson S-2000
6. Master Volume -5db Sub calibrated to 75db on SPL meter (uncorrected) and then added second sub(that added 5 db's)


1. 126-7 db LP(8 feet)analog meter
2. N/A 1meter
3. Timestamp 15:52 in DTS
4. 2300cuft (sealed)
5. Dual 18 inch horn loaded subs with a Sampson S-2000
6. Master Volume 0 db Sub calibrated to 75db on SPL meter (uncorrected) and then added second sub(that added 5 db's)

1. 104db LP(8 feet)
2. N/A 1meter
3. Timestamp 16:13 in DTS
4. 2300cuft (sealed)
5. Dual 18 inch horn loaded subs with a Sampson S-2000
6. Master Volume -5db Sub calibrated to 75db on SPL meter (uncorrected) and then added second sub(that added 5 db's)

1. 110db LP(8 feet)
2. N/A 1meter
3. Timestamp 16:13 in DTS
4. 2300cuft (sealed)
5. Dual 18 inch horn loaded subs with a Sampson S-2000
6. Master Volume 0db Sub calibrated to 75db on SPL meter (uncorrected) and then added second sub(that added 5 db's)

1. 122db LP(8 feet)
2. N/A 1meter
3. Timestamp 16:30 in DTS
4. 2300cuft (sealed)
5. Dual 18 inch horn loaded subs with a Sampson S-2000
6. Master Volume -5db Sub calibrated to 75db on SPL meter (uncorrected) and then added second sub(that added 5 db's)

1. 126db LP(8 feet)
2. N/A 1meter
3. Timestamp 16:30 in DTS
4. 2300cuft (sealed)
5. Dual 18 inch horn loaded subs with a Sampson S-2000
6. Master Volume 0db Sub calibrated to 75db on SPL meter (uncorrected) and then added second sub(that added 5 db's)

DrPainMD
1. 102db LP
2. 110db 1meter
3. Timestamp 15:52 in DTS
4. 1310cuft (sealed)
5. A single SVS 25-31PCi (22hz tuned)
6. Master Volume -10db Sub calibrated to 75db on SPL meter (uncorrected)

LongFellowFan
1. 106db at listening position
2. ***db at one meter
3. Timestamp 15:52
4. 1408 cubic feet. not sealed
5. SVS PB-10-ISD
6. MV -7dB sub cal at 75db at -7db.

1. 106db at listening postition
2. ***db at one meter
3. Timestamp 16:13
4. 1408 cubic feet not sealed
5. SVS PB-10-ISD
6. MV -7db sub cal at 75db at -7db

1. 108db at listening postition
2. ***db at one meter
3. Timstamp 16:30
4. 1408 cubic feet not sealed
5. SVS PB-10-ISD
6. MV -7db sub cal at 75db at -7db.

Kingrsl
1. 98dB on analog meter
2. haven't measured at 1m
3. Timestamp 15:52 in DTS
4. 2750cf, open to hallway
5. Hsu VTF-2 Mk3, Max Extension mode (1 port plugged)
6. "0" MV, sub calibrated +3dB

1. 88dB on analog meter
2. haven't measured at 1m
3. Timestamp 16:30 in DTS
4. 2750cf, open to hallway
5. Hsu VTF-2 Mk3, Max Extension mode (1 port plugged)
6. "0" MV, sub calibrated +3dB

Mojomike
1. 114 db in Listening area, about 14 ft.
2. 126 db 1 meter from ported sub, Behringer lighting up like a Christmas tree
3. 6120 cu ft. open room.
4. Two SB12Plus's and a 2 x 10" TC1000 6.5 cu ft. ported box, Behringer EP2500 powered.
5. Receiver test tones 75db at MV.


jmcomp124
1. 111dB LP is about 15ft
2. n/a
3. 6000-7000cubic feet (est)
4. Dual JL113
5. Master volume is reference (0dB), sub calibrated about 7dB hot.

A couple things I wanted to say but didn't belong in the main post.

I tried 12hz tune and it was awesome with the end of that scene where the bass dips ULTRA SUBSONIC.

The problem was I didn't have enough headroom to get any higher than like 101-102 in that area! Dual 12hz Tuned 16-46+ would be a different story

For the 15:52 scene the 12 and 16hz tune were exactly the same score....the bass for that timestamp is a large area from about 18hz up to 50hz....So this really tests the range of the sub as well...

When I took it to -8db MV I could tell that was it....I ran out of headroom.....values stayed the same and any more volume would just not have been good for my sub.

it isn't even that.

I'll be super honest with everyone.

I'm 27, single--just bought a house and my Credit Card balance right now is $4000 that needs to be paid off by September so I don't get killed with all the back interest. (All $4000 went towards the house and doing improvement and furniture)

THEN on top of that I've been paying CASH for my Masters Degree which will all be over this semester and I'll be done with that. SOOOOOO I'm hoping by Summer or Fall to have enough "free" cash flow (aka credit card space) to buy that 2nd 16-46+.

Trust me it will happen....I just have to be smart about money right now...everyone knows the first year you buy your first house money is super tight! Plus this summer I plan to put on a new Garage roof....add a Deck or Patio to the back.....AND refinish the basement for the Theater room...

So you see I still need ALOT of money for summer projects

Art I think what I'm going to do with WOTW is break it up. This thread will cover just the Lightning scene.

Then I will do a:

"pod emerging scene" Thread

"Heat Ray" thread

and even the one you just said "hill thread with steps and horn"


I think it is best for keepign track of data if we break it up and focus on one peice at a time WOTW is truly one of those HT and Subwoofer lovers dream....so I think its fair we focus multiple threads on it to truly analyze the great data we have to work with!! Plus hey, we always need something to do next week

Man I went to sleep.......and got up this morning hoping to see a bunch of people posting numbers since this scene is probably one of the most popular around for us subwoofer heads....

Be sure to look at the attachment. It is detailed and gives exact timestamps...the same as the directions...


Jai...PhD.....we'll see. After the masters the focus is on TEACHING for a while and making some money....then maybe I'll do the PhD. Dr. would be a sweeeeet part of my name

LOL that picture is priceless for this thread!!!

Try -9db only if you are comfortable with it.....I'm sure we would all like to see if compression sets in, but we don't want you to damage your subwoofer...

If you can chime in on the 16:13 and 16:30 timestamps as well since they are very very low frequencies only and that will really show how we are doing down deep.

Frockc

Looking at waterfall chart carefully you will notice that the 15:52 time stamp is pretty much all 25hz-50hz bass....it is very strong throughout that region

Looking at the other 2 timestamps, 16:13 and 16:30 you will see that there are actually 2 levels of bass a major 15-20hz region and also a 3-11hz region.

I doubt that many of us are even touching that 3-11hz region subsonic stuff....but we are infact recording the 15-20hz bass which is a VERY VERY hard scene to reproduce for any subwoofer.

You will experience compression at different points with these scenes because of the difference in bass frequencies for the scene.

looking at your data for teh 15:52 scene I'd say that -12db was the point before compression....once you upped the volume more the numbers flatten thus showing us signs that there is compression

On the other hand...the other 2 scenes 16:13 and 16:30 show us that at -9db you still had a good gain in SPL...so I don't think it was compressing at that point, but I have a feeling any further increase in master volume would push to compression for these scenes too...

It is attached the to first post.....scroll to the bottom of the first post here.

I wish it was at the top...

Maybe you could post it as a picture for us instead of an attachment