Wotw--in Depth, Rest Of The Movie---subwoofer Test - AVS | Home Theater Discussions And Reviews
Baselworld is only a few weeks away. Getting the latest news is easy, Click Here for info on how to join the Watchuseek.com newsletter list. Follow our team for updates featuring event coverage, new product unveilings, watch industry news & more!


Forum Jump: 
Reply
 
Thread Tools
post #1 of 117 Old 03-24-2007, 02:15 PM - Thread Starter
AVS Special Member
 
bgillyjcu's Avatar
 
Join Date: Jan 2004
Location: Cleveland Ohio
Posts: 3,022
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Liked: 12
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



____________________________________________________________
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. 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!!!!

-------------------------------------------------------------------------------------------------

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

Twitter @ Clefoodandbrews
 

bgillyjcu is offline  
Sponsored Links
Advertisement
 
post #2 of 117 Old 03-24-2007, 02:16 PM - Thread Starter
AVS Special Member
 
bgillyjcu's Avatar
 
Join Date: Jan 2004
Location: Cleveland Ohio
Posts: 3,022
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Liked: 12
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

Twitter @ Clefoodandbrews
 

bgillyjcu is offline  
post #3 of 117 Old 03-25-2007, 06:09 AM - Thread Starter
AVS Special Member
 
bgillyjcu's Avatar
 
Join Date: Jan 2004
Location: Cleveland Ohio
Posts: 3,022
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Liked: 12
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

Twitter @ Clefoodandbrews
 

bgillyjcu is offline  
post #4 of 117 Old 03-25-2007, 07:41 AM
AVS Addicted Member
 
MKtheater's Avatar
 
Join Date: Jul 2006
Location: New Hartford, NY
Posts: 15,320
Mentioned: 14 Post(s)
Tagged: 0 Thread(s)
Quoted: 600 Post(s)
Liked: 600
I was busy watching movies. When I get some time I will run through them.

NanoAvr to Outlaw 975
amps-5 Adcom GFA-555's mono's, Sanway FP14K
5 JBL 2447 CD, 5 2352 horns, 3 15 inch 2035 for fronts, 2 15 inch 2032 for surrounds
subs-IB SI 18ht x12
MKtheater is offline  
post #5 of 117 Old 03-26-2007, 09:33 AM
Advanced Member
 
kramskoi's Avatar
 
Join Date: Dec 2005
Location: south-central Louisiana
Posts: 507
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Liked: 27
Quote:
Originally Posted by bgillyjcu View Post

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

not everyone would be able to test even a few of the scenes, especially at night, without undue risk of shackles from the local authorities...these scenes play at and above 120 dB on the loudest systems and unless one has a dedicated and soundproofed theater, no one in the entire house would go undisturbed by these "spirited" decibel levels...just an observation...

"Frequency response is NOT efficiency response."

 

Klipsch RB-35's main

Klipsch RB-35's surround

Acoustech HT-65 center

Cerwin-Vega CV-2800

 

Subwoofer

B&C 21SW152-4  [21" critical-Q]

 

kramskoi is offline  
post #6 of 117 Old 03-26-2007, 10:19 AM - Thread Starter
AVS Special Member
 
bgillyjcu's Avatar
 
Join Date: Jan 2004
Location: Cleveland Ohio
Posts: 3,022
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Liked: 12
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

Twitter @ Clefoodandbrews
 

bgillyjcu is offline  
post #7 of 117 Old 03-26-2007, 02:49 PM
Member
 
movies2090's Avatar
 
Join Date: Sep 2002
Location: WI
Posts: 157
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Liked: 10
Don't worry, I plan on doing some tests with my old sub (SVS PB12-ISD) and my two new babies which should arrive tomorrow (2 20-39 PC+'s) So I'll probably do a before and after. And I have to two setups that I want to try with the new ones so I may have 3 sets of numbers for you.
movies2090 is offline  
post #8 of 117 Old 03-27-2007, 06:39 AM - Thread Starter
AVS Special Member
 
bgillyjcu's Avatar
 
Join Date: Jan 2004
Location: Cleveland Ohio
Posts: 3,022
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Liked: 12
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)

Twitter @ Clefoodandbrews
 

bgillyjcu is offline  
post #9 of 117 Old 03-27-2007, 07:38 AM
Advanced Member
 
S_rangeBrew's Avatar
 
Join Date: Jan 2005
Posts: 866
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 20 Post(s)
Liked: 43
I don't know how useful this information will be for comparison, without a baseline for comparison. However, it looks fun, so maybe I will try it with my Sony 12" SAW-M40 (remember that one?) for a laugh.

I'm sure it will lay waste to all the SVS's around here. LOL.
S_rangeBrew is offline  
post #10 of 117 Old 03-27-2007, 07:38 AM
Member
 
movies2090's Avatar
 
Join Date: Sep 2002
Location: WI
Posts: 157
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Liked: 10
I am anxiously awaiting these subs as they are "out for delivery". I got the day off so I hope they come eary so I can put in some good testing with them. The two locations I have staked out for these two bad boys is: 1. Colocating them in the left corner where I have my current sub. And 2. Putting each in between each of my front speakers. I want to play around with each setting and see which one I'll like the most. I hope to have a report back sometime today and at the very latest tomorrow.
movies2090 is offline  
post #11 of 117 Old 03-27-2007, 07:49 AM - Thread Starter
AVS Special Member
 
bgillyjcu's Avatar
 
Join Date: Jan 2004
Location: Cleveland Ohio
Posts: 3,022
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Liked: 12
Quote:
Originally Posted by S_rangeBrew View Post

I don't know how useful this information will be for comparison, without a baseline for comparison. However, it looks fun, so maybe I will try it with my Sony 12" SAW-M40 (remember that one?) for a laugh.

I'm sure it will lay waste to all the SVS's around here. LOL.


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...

Twitter @ Clefoodandbrews
 

bgillyjcu is offline  
post #12 of 117 Old 03-27-2007, 09:45 AM
Member
 
movies2090's Avatar
 
Join Date: Sep 2002
Location: WI
Posts: 157
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Liked: 10
Well my new subs are here. But before I get to the good stuff I went ahead and tested my old sub so I could have something to compare it to. I added an extra time stamp or two and just corrected ones that you had listed. Well here goes:
21:12-21:15 Alien Pound Under Earth-98db
21:43 to 21:50 Grounding Turning and shaking-101db
23:11 Ground Implodes down-101db
23:35 Tripod Arises from ground-102db
23:46 Tripod Smashes the Car with its foot-102db
26:22 First Heat Beam-103db
27:19 Massive Heat Ray blows up building-102db
31:48 to 31:52 Tanker Explosion-104db
59:14 Ferry---First Foot Stomp-98db
59:18 Ferry---Second Foot Stomp-96db
59:20 Alien "sound" tone (Initial Freq)-I only took highest reading from this spot-104db
1:10:09 Fireball Explosion/Alien Appears-101db
1:45:13 Low Sweep when Alien Crashes to the Ground-108db

This is with a PB12-ISD (with old driver) Master volume at -12 and sub running at 78db or +3 hot. All numbers are uncorrected. These tests were conducted with an analog Radio Shack meter running C-Weighted and fast. Tests were done with speakers all ON because I don't know if it's possible to do the tests with speakers off on my receiver (Yamaha RX-V 2500) Room size is 3000cu/ft.

Hope to update this in an hour or two with results from the 1st location!
movies2090 is offline  
post #13 of 117 Old 03-27-2007, 11:16 AM - Thread Starter
AVS Special Member
 
bgillyjcu's Avatar
 
Join Date: Jan 2004
Location: Cleveland Ohio
Posts: 3,022
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Liked: 12
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...

Twitter @ Clefoodandbrews
 

bgillyjcu is offline  
post #14 of 117 Old 03-27-2007, 11:23 AM
Member
 
movies2090's Avatar
 
Join Date: Sep 2002
Location: WI
Posts: 157
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Liked: 10
Sorry about that. So yeah +6 hot is correct. Well here is a quick rundown of my corner numbers. I did them quick but did test phase/calibrate, albeit quickly so I could come up with some numbers. Here's what I got:

21:12-21:15 Alien Pound Under Earth-98db (101db)
21:43 to 21:50 Grounding Turning and shaking-101db (104db)
23:11 Ground Implodes down-101db (108db)
23:35 Tripod Arises from ground-102db (109db)
23:46 Tripod Smashes the Car with its foot-102db (108db)
26:22 First Heat Beam-103db (109db)
27:19 Massive Heat Ray blows up building-102db (108db)
31:48 to 31:52 Tanker Explosion-104db (109db)
59:14 Ferry---First Foot Stomp-98db (100db)
59:18 Ferry---Second Foot Stomp-96db (101db)
59:20 Alien "sound" tone (Initial Freq)-I only took highest reading from this spot-104db (108db)
1:10:09 Fireball Explosion/Alien Appears-101db (105db)
1:45:13 Low Sweep when Alien Crashes to the Ground-108db (109db)

I placed both subs right next to eachother in the corner. I did not move them once I started testing to tweak for location. Well I'm gonna go try my other location out to see what I can get. Be back later.
movies2090 is offline  
post #15 of 117 Old 03-27-2007, 11:25 AM - Thread Starter
AVS Special Member
 
bgillyjcu's Avatar
 
Join Date: Jan 2004
Location: Cleveland Ohio
Posts: 3,022
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Liked: 12
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??

Twitter @ Clefoodandbrews
 

bgillyjcu is offline  
post #16 of 117 Old 03-27-2007, 11:39 AM
Member
 
movies2090's Avatar
 
Join Date: Sep 2002
Location: WI
Posts: 157
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Liked: 10
Yes I tried to use all the same settings as I used before to make it as similiar a test as possible.
movies2090 is offline  
post #17 of 117 Old 03-27-2007, 11:50 AM - Thread Starter
AVS Special Member
 
bgillyjcu's Avatar
 
Join Date: Jan 2004
Location: Cleveland Ohio
Posts: 3,022
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Liked: 12
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!!

Twitter @ Clefoodandbrews
 

bgillyjcu is offline  
post #18 of 117 Old 03-27-2007, 04:16 PM - Thread Starter
AVS Special Member
 
bgillyjcu's Avatar
 
Join Date: Jan 2004
Location: Cleveland Ohio
Posts: 3,022
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Liked: 12
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!

Twitter @ Clefoodandbrews
 

bgillyjcu is offline  
post #19 of 117 Old 03-27-2007, 04:45 PM
Member
 
movies2090's Avatar
 
Join Date: Sep 2002
Location: WI
Posts: 157
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Liked: 10
Well I'm back with my final set of numbers. Bgillyjcu, the exact timestamp of the Tripods first leg coming out is 23:35 like I've indicated, not 23:25. Trust me on this, I've watched that scene about 25 times today. The 3rd set of numbers is with the subs separated in between each speaker. Not as good as the corner, but man does it look a lot better and a lot cooler.

21:12-21:15 Alien Pound Under Earth-98db (101db) (96db)
21:43 to 21:50 Grounding Turning and shaking-101db (104db) (102db)
23:11 Ground Implodes down-101db (108db) (102db)
23:35 Tripod Arises from ground-102db (109db) (104db)
23:46 Tripod Smashes the Car with its foot-102db (108db) (103db)
26:22 First Heat Beam-103db (109db) (104db)
27:19 Massive Heat Ray blows up building-102db (108db) (104db)
31:48 to 31:52 Tanker Explosion-104db (109db) (104db)
59:14 Ferry---First Foot Stomp-98db (100db) (97db)
59:18 Ferry---Second Foot Stomp-96db (101db) (97db)
59:20 Alien "sound" tone (Initial Freq)-I only took highest reading from this spot-104db (108db) (104db)
1:10:09 Fireball Explosion/Alien Appears-101db (105db) (101db)
1:45:13 Low Sweep when Alien Crashes to the Ground-108db (109db) (107db)
movies2090 is offline  
post #20 of 117 Old 03-27-2007, 05:14 PM - Thread Starter
AVS Special Member
 
bgillyjcu's Avatar
 
Join Date: Jan 2004
Location: Cleveland Ohio
Posts: 3,022
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Liked: 12
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!!!!

Twitter @ Clefoodandbrews
 

bgillyjcu is offline  
post #21 of 117 Old 03-27-2007, 06:23 PM
Senior Member
 
ccarzoo's Avatar
 
Join Date: Jan 2007
Posts: 250
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 11
Brad,

All that work down the toilet.... Just kidding. I experimented with moving it into that deep open corner on the other side of where it was, and it killed the bass. I then said, f the rest of my buddies and put it behind my couch. The bass was the same, at least by ear in the rest of the room. But, I benefit the most in my position. It is awesome behind the couch.

when you inviting em over?

"Go Blue"
ccarzoo is offline  
post #22 of 117 Old 03-27-2007, 06:53 PM
AVS Special Member
 
Mathesar's Avatar
 
Join Date: Feb 2004
Location: California
Posts: 1,323
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Liked: 13
Last week I did a quick and dirty calibration using my receivers test tones & a radio shack digital spl meter ,but Ill tell you what it worked wonders compared to no calibration at all! What I basically found out is that my sub was WAY to hot, everything sounds much more balanced now.

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):

**21:12 to 21:15 Alien Pound Under Earth - 104db
**21:43 to 21:50 Grounding Turning and shaking - 110db
**23:11 Ground Implodes down - 111db
**23:35 Tripod first puts foot out - 112db
**23:46 Tripod Smashes the Car with its foot - 111db
**26:22 First Heat Ray - 109db
**27:19 Massive Heat Ray blows up building - 112db
**31:48 to 31:52 Tanker Explosion - 113db
**59:14 Ferry---First Foot Stomp - 108db
**59:18 Ferry---Second Foot Stomp - 106db
**59:20 Alien "sound" tone (Initial Freq) - 106db
**59:24 Alien 'sound" tone (LOWER Freq) - 102db
**1:10:09 Fireball Explosion/Alien Appears -110db
**1:45:13 Low Sweep when Alien Crashes to the Ground - 111db
Mathesar is offline  
post #23 of 117 Old 03-27-2007, 08:12 PM - Thread Starter
AVS Special Member
 
bgillyjcu's Avatar
 
Join Date: Jan 2004
Location: Cleveland Ohio
Posts: 3,022
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Liked: 12
Quote:
Originally Posted by ccarzoo View Post

Brad,

All that work down the toilet.... Just kidding. I experimented with moving it into that deep open corner on the other side of where it was, and it killed the bass. I then said, f the rest of my buddies and put it behind my couch. The bass was the same, at least by ear in the rest of the room. But, I benefit the most in my position. It is awesome behind the couch.

when you inviting em over?


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!!!)

Twitter @ Clefoodandbrews
 

bgillyjcu is offline  
post #24 of 117 Old 03-27-2007, 08:17 PM - Thread Starter
AVS Special Member
 
bgillyjcu's Avatar
 
Join Date: Jan 2004
Location: Cleveland Ohio
Posts: 3,022
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Liked: 12
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!!!

Twitter @ Clefoodandbrews
 

bgillyjcu is offline  
post #25 of 117 Old 03-28-2007, 12:36 PM
Advanced Member
 
kramskoi's Avatar
 
Join Date: Dec 2005
Location: south-central Louisiana
Posts: 507
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Liked: 27
War of the Worlds/DTS

2100 ft3/bathroom open/

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

These are amp limited readings...

"Frequency response is NOT efficiency response."

 

Klipsch RB-35's main

Klipsch RB-35's surround

Acoustech HT-65 center

Cerwin-Vega CV-2800

 

Subwoofer

B&C 21SW152-4  [21" critical-Q]

 

kramskoi is offline  
post #26 of 117 Old 03-28-2007, 01:54 PM - Thread Starter
AVS Special Member
 
bgillyjcu's Avatar
 
Join Date: Jan 2004
Location: Cleveland Ohio
Posts: 3,022
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Liked: 12
Quote:
Originally Posted by kramskoi View Post

War of the Worlds/DTS

2100 ft3/bathroom open/

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

These are amp limited readings...


What sub or subs are you using exactly?

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

Twitter @ Clefoodandbrews
 

bgillyjcu is offline  
post #27 of 117 Old 03-28-2007, 03:28 PM
Advanced Member
 
Richard Mayer's Avatar
 
Join Date: Oct 2006
Posts: 863
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Quote:
Originally Posted by bgillyjcu View Post

What sub or subs are you using exactly?

He's using DIY.
Richard Mayer is offline  
post #28 of 117 Old 03-28-2007, 04:03 PM
AVS Special Member
 
Mathesar's Avatar
 
Join Date: Feb 2004
Location: California
Posts: 1,323
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Liked: 13
Quote:
Originally Posted by Richard Mayer View Post

He's using DIY.

Or to be more specific: http://www.hometheatershack.com/foru...ealed-sub.html Is that the sub? Either way very impressive numbers
Mathesar is offline  
post #29 of 117 Old 03-28-2007, 06:24 PM
Advanced Member
 
kramskoi's Avatar
 
Join Date: Dec 2005
Location: south-central Louisiana
Posts: 507
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Liked: 27
Quote:
Originally Posted by Mathesar View Post

Or to be more specific: http://www.hometheatershack.com/foru...ealed-sub.html Is that the sub? Either way very impressive numbers

it's a 3x15 setup and the listening position is 3.5 meters away


"Frequency response is NOT efficiency response."

 

Klipsch RB-35's main

Klipsch RB-35's surround

Acoustech HT-65 center

Cerwin-Vega CV-2800

 

Subwoofer

B&C 21SW152-4  [21" critical-Q]

 

kramskoi is offline  
post #30 of 117 Old 03-28-2007, 06:34 PM
AVS Special Member
 
TheEAR's Avatar
 
Join Date: Nov 2006
Location: Montreal,CANADA
Posts: 3,464
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 12
Kramskoi,

Great looking TC Sounds army of thunder! Do I see triple TC-3000 15" woofers!

I am looking to build an opposed driver sub also,the best solution to cancel any sub vibration at very high SPL.

You have a PM

Thanks

Ask yourself mortal , do you have as much displacement as me ? The answer is no unless you have a Windmere fan sub.
TheEAR is offline  
Sponsored Links
Advertisement
 
Reply Subwoofers, Bass, and Transducers



Forum Jump: 

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off