Wotw--in Depth, Rest Of The Movie---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.

Second...We are using MULTIPLE timestamps, so just do 1 measurement at your normal listening volume (Speakers off though if you can)

Exact TimeStamp and Quick Description.

**21:12 to 21:15 Alien Pound Under Earth
**21:43 to 21:50 Grounding Turning and shaking
**23:11 Ground Implodes down
**23:35 Tripod first puts foot out
**23:46 Tripod Smashes the Car with its foot
**26:22 First Heat Ray
**27:19 Massive Heat Ray blows up building
**31:48 to 31:52 Tanker Explosion
**59:14 Ferry---First Foot Stomp
**59:18 Ferry---Second Foot Stomp
**59:20 Alien "sound" tone (Initial Freq)
**59:24 Alien 'sound" tone (LOWER Freq)
**1:10:09 Fireball Explosion/Alien Appears
**1:45:13 Low Sweep when Alien Crashes to the Ground


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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
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I'm curious about a few things.

1. Room size cubic feet
2. What subwoofer set up are you running?
3. 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

and finally the timestamps and scores.

JUST COPY AND PAST MY INFORMATION AND REPLACE IT WITH YOURS SO WE CAN ALL USE THE SAME EXACT FORMAT!!!!

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Bgillyjcu
1. 2300cuft (not sealed due to open doorway)
2. A single SVS 16-46Plus
3. Master Volume -12db Sub calibrated to 72db on SPL meter (uncorrected)

102db**21:12 to 21:15 Alien Pound Under Earth
109db**21:43 to 21:50 Grounding Turning and shaking
109db**23:11 Ground Implodes down
110db**23:35 Tripod first puts foot out
109db**23:46 Tripod Smashes the Car with its foot
109db**26:22 First Heat Ray
110db**27:19 Massive Heat Ray blows up building
111db**31:48 to 31:52 Tanker Explosion
105db**59:14 Ferry---First Foot Stomp
105db**59:18 Ferry---Second Foot Stomp
104db**59:20 Alien "sound" tone (Initial Freq)
101db**59:24 Alien 'sound" tone (LOWER Freq)
105db**1:10:09 Fireball Explosion/Alien Appears
110db**1:45:13 Low Sweep when Alien Crashes to the Ground


Movies2090
1. Room size is 3000cu/ft.
2. PB12-ISD (with old driver)
3. Master volume at -12 and sub running at 78db (uncorrected)---Speakers On

98db**21:12-21:15 Alien Pound Under Earth-
101db**21:43 to 21:50 Grounding Turning and shaking-
101db**23:11 Ground Implodes down-
102db**23:35 Tripod Arises from ground-
102db**23:46 Tripod Smashes the Car with its foot-
103db**26:22 First Heat Beam-
102db**27:19 Massive Heat Ray blows up building-
104db**31:48 to 31:52 Tanker Explosion-
98db**59:14 Ferry---First Foot Stomp-
96db**59:18 Ferry---Second Foot Stomp-
104db**59:20 Alien "sound" tone (Initial Freq)-highest reading from this spot-
101db**1:10:09 Fireball Explosion/Alien Appears-
108db**1:45:13 Low Sweep when Alien Crashes to the Ground


1. Room size is 3000cu/ft.
2. DUAL SVS PC20-39+
3. Master volume at -12 and sub running at 78db (uncorrected)---Speakers On

101db**21:12-21:15 Alien Pound Under Earth-
104db**21:43 to 21:50 Grounding Turning and shaking-
108db**23:11 Ground Implodes down-
109db**23:35 Tripod Arises from ground-
108db**23:46 Tripod Smashes the Car with its foot-
109db**26:22 First Heat Beam-
108db**27:19 Massive Heat Ray blows up building-
109db**31:48 to 31:52 Tanker Explosion-
100db**59:14 Ferry---First Foot Stomp-
101db**59:18 Ferry---Second Foot Stomp-
108db**59:20 Alien "sound" tone (Initial Freq)-highest reading from this spot-
105db**1:10:09 Fireball Explosion/Alien Appears-
109db**1:45:13 Low Sweep when Alien Crashes to the Ground-


Mathesar
1. Just under 1500sqft (sealed)
2. Single HSU VTF3 MK3 w/ Turbo ,frequency switch set to 18hz
3. Master volume set to 40 of 75 , sub calibrated to 76db (uncorrected) at 40 MV

Results (uncorrected):

104db**21:12 to 21:15 Alien Pound Under Earth -
110db**21:43 to 21:50 Grounding Turning and shaking -
111db**23:11 Ground Implodes down -
112db**23:35 Tripod first puts foot out -
111db**23:46 Tripod Smashes the Car with its foot -
109db**26:22 First Heat Ray -
112db**27:19 Massive Heat Ray blows up building -
113db**31:48 to 31:52 Tanker Explosion -
108db**59:14 Ferry---First Foot Stomp -
106db**59:18 Ferry---Second Foot Stomp -
106db**59:20 Alien "sound" tone (Initial Freq) -
102db**59:24 Alien 'sound" tone (LOWER Freq) -
110db**1:10:09 Fireball Explosion/Alien Appears -
111db**1:45:13 Low Sweep when Alien Crashes to the Ground -

kramskoi
1. 2100 ft3/bathroom open/
2. 3x15 DIY
3. MV -16/ subwoofer level -7.5 dB

SPL @ 3.5 meters
123 dB**23:35 Tripod first puts foot out
122 dB**23:46 Tripod Smashes the Car with its foot
122 dB**26:22 First Heat Ray



MKTheater
1. 2300cuft (sealed, insulated and treated)
2. Dual 18 inch horns
3. Master Volume 0 db Sub calibrated to 75db on SPL meter (uncorrected)

116 db**21:12 to 21:15 Alien Pound Under Earth
121 db**21:43 to 21:50 Grounding Turning and shaking
122 db**23:11 Ground Implodes down
125 db**23:35 Tripod first puts foot out
125 db**23:46 Tripod Smashes the Car with its foot
121 db**26:22 First Heat Ray
123 db**27:19 Massive Heat Ray blows up building
123 db**31:48 to 31:52 Tanker Explosion
117 db**59:14 Ferry---First Foot Stomp
117 db**59:18 Ferry---Second Foot Stomp
119 db**59:20 Alien "sound" tone (Initial Freq)
116 db**59:24 Alien 'sound" tone (LOWER Freq)
120 db**1:10:09 Fireball Explosion/Alien Appears
123 db**1:45:13 Low Sweep when Alien Crashes to the Ground


Longfellowfan
1. Room Size 1408 cubic ft mostly sealed with room treatments
2. SVS-PB-10-ISD
3. MV-8db Sub cal uncorrected at 75db.

108db**21:12 to 21:15 Alien Pound Under Earth
108db**21:43 to 21:50 Grounding Turning and shaking
106db**23:11 Ground Implodes down
105db**23:35 Tripod first puts foot out
104db**23:46 Tripod Smashes the Car with its foot
100db**26:22 First Heat Ray 100db
104db**27:19 Massive Heat Ray blows up building
104db**31:48 to 31:52 Tanker Explosion
102db**59:14 Ferry---First Foot Stomp
102db**59:18 Ferry---Second Foot Stomp
100db**59:20 Alien "sound" tone (Initial Freq)
102db**59:24 Alien 'sound" tone (LOWER Freq)
104db**1:10:09 Fireball Explosion/Alien Appears
104db**1:45:13 Low Sweep when Alien Crashes to the Ground

I picked these ones out because to me they were the combination of the DEEPEST and Most powerful scenes in the movie. The whole movie is a feast, so I tried to pick out the best for us to look at

WOW the whole night passed and not one post. I thought this would be the granddaddy of them all since I gave 12 exact timestamps for people to easily measure their peak response

Ya....but what fun is owning a Corvette Z06 if you always drive the speed limit


The testing really only takes 10-15mins to conduct, if people can find the time and can do it without pissing EVERYONE off, then cool.

If not, then thats ok too

WOW SWEET.

Dual 20-39+ should give you some VERY VERY impressive numbers! I almost went that route, but I'm going dual 16-46+. (Only have a single for now until I save up some more cash)

Are you planing on locating them in the same corner?? +6 boost in headroom..

We'll take all the numbers we can get....the more information the better for us and for you too!!! And for those new babies you won't find a more powerful cluster of scenes in one movie to demo!!

I bet you will be close to pushing 115-120db on some of these scenes if your room is not TOO big... (I'm jealous already)

If you look at the other threads like this one you will see that everyone finds a starting point and increases their MV incrementally to try to find the compression point....the point where you are getting the most out of your subwoofer.

For this particular thread I figured just to post the normal listening volume numbers, but everyone knows if they want to post MORE readings than just that we will welcome it with open arms and use the data you provide to give feedback about performance and whether you have more room to play or if you are at the compression point.

And hey, we are not knockin your Sony, it is more than welcome to play with WOTW and you never know, you might surprise yourself, or you might learn that you have to calibrate it differently...

I cannot believe you didn't measure this one. That first foot that comes out was so powerful on my system! I know this is the exact time stamp---23:25 Tripod first puts foot out


I'm going to go back and add these ones in too and test them on mine for more data! Thanks
26:22 First Heat Beam
21:12-21:15 Alien Pound Under Earth


Another thing...you said your sub is 78db.....I'm assuming uncorrected.
So really 78db on the meter is really like 81db once you add the correction factor in, which would mean that your sub is actually +6db hot and not 3...

Is the 2nd number the NEW SCORE in (***) with the Dual 20-39+s???


Did you use master volume -12db again for the test?

Where are the dual subs calibrated at? 78db uncorrected again??

Well looks like good results going from the PB-12 to the Dual 20-39+s right from the start....talking anywhere from 1db to a massive 7db gain in output!

And thats right after setting them up and quickly running the tests. I'm sure you can even get more out of them once you find the sweet spot for your room and really dial them in perfectly. I'm excited for you and I'll update any numbers you get for the duals!! Good luck!!

Movies2090 I added those 2 extra scenes to the list and tested them myself.

The first 21:12-21:15 wasn't that powerful to me...but I added it anyways

I hope more people do this too!

Well the looks are all good and dandy but can you really afford to move it from the corner considering that the 3rd set of numbers is not really any better than the SINGLE PB-12ISD???

I know if it were me it would be corner all the way!!

And you are right about the timestamp error....just a typing error on my part and I'll adjust it right now!!!!

So you are going to use the behind the couch position or back to under the stairs?

Well I do have next week off of work, but I'll only be in town Monday-Wednesday (probably heading out of town Wednesday evening). What days this weekend or next week are good for you???

What I think you should do is actually buy a digital SPL meter like I had for $45 and I'll teach you how to really use it. you could bring it with up up here and you can practice. That way you can play even more freely and really test to see what kind of numbers you are getting. I can even burn you that same test disc I brought with me so you can do exactly what we did.

PS....after going to your place I was inspired to find the best best best palce in my room so I went on a sub moving missing. It turns out that the best place is with it HIDDEN behind my 55inch sony. (This was not an option with the PB-12NSD due to size, and I never considered it initally because I was a ilttle scared about putting this earthshaking monster behind all of my equipment. But it turns out everything works fine, no effect on the TV at all no matter what volume level.

So now you cannot even see the sub and bass just POUNDS OUT at even higher SPL numbers than ever before with the sub calibrated EXACTLY the same. I'm talking a 3db increase in ALL FREQuNCIES, which is amazing! You walk into my room and all you see it the mains and center....then WATCH OUT


ps.........anyone else in the Cleveland Area who wants a demo I'd be open for another 1-2 people in addition to Chris and myself....(as long as you are not an ax murderer or anything like that!!!)

Mathesar

1. Just under 1500sqft (sealed)


Your system has to sound unreal in such a small sealed room! Good job dialing it in....people just don't know how important it is until they do it. Trust me, I was guilty of the same!!!

What sub or subs are you using exactly?

is the 3.5M from your listening position because we are doing ilstening position tests.