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Nemo--Darla Scene--Subwoofer Test - Page 7

post #181 of 274
3/1/07 at 7:13pm
Thread Starter 
Do you have an SPL meter?

You need to to properly calibrate your speakers and subwoofer...

you are right, turn off the double bass and set the crossover at 80hz....
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post #182 of 274
3/1/07 at 7:23pm
i had a question i posted some pics of my sub... does it matter where ur sub is positioned in a room that is open to the upstairs as well as downstairs(basement door can be closed)... my whole first floor has the living room on the left half and the dining room on the right side which has the kitchen just behind the dinning room...

my sub is in the front left corner of the living room which the back left corner of the living room is the stairs to the two upstairs floors... can that effect the sub in a negative way? as opposed to it on the right side of the living room which is basically the middle of the first floor...

i put it on the left side because i measured a few places and got the best response there...
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post #183 of 274
3/1/07 at 7:25pm
Thread Starter 
I was going to suggest that same place after reading just your first paragraph. Sounds like you did the right thing.

I'd leave it there and be happy knowing you tested it and got the best response there
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post #184 of 274
3/1/07 at 7:53pm
Here are the new numbers with 25 hz tune
1. 111 db from Listening Position (analog SPL Meter-fast)
2. 118 db from 1 meter (analog SPL Meter-fast)
3. 2300cuft (sealed )
4. A single SVS PB12/plus/2 tuned in the 25 hz tune
5. Master Volume -10db Sub calibrated to 75db on SPL meter. Ref is 0, all speakers are set to 75 db's.

1. 114 db from Listening Position (analog SPL Meter-fast)
2. 120 db from 1 meter (analog SPL Meter-fast)
3. 2300cuft (sealed )
4. A single SVS PB12/plus/2 tuned in the 25 hz tune
5. Master Volume -5 db Sub calibrated to 75db on SPL meter. Ref is 0, all speakers are set to 75 db's.

1. 116 db from Listening Position (analog SPL Meter-fast)
2. 122 db from 1 meter (analog SPL Meter-fast)
3. 2300cuft (sealed )
4. A single SVS PB12/plus/2 tuned in the 25 hz tune
5. Master Volume 0 db Sub calibrated to 75db on SPL meter. Ref is 0, all speakers are set to 75 db's.
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post #185 of 274
3/1/07 at 7:55pm
EDIT: Disabling double bass didnt seem to reduce the bass output in this scene and im still hearing the same port noise ,I took the cover off the subwoofer during and the woofer does move *A LOT* , perhaps I need to lower the subwoofer's volume even further? I dont have the receivers main volume up all that loud when testing it (volume 43).. Other than the port noise the actual bass output is quite impressive during this scene but I dont have an SPL meter for actual numbers (yet).

I have 2 weeks to decide If I want a refund on the sub ..after skimming through this forum it seems I could get a better subwoofer for even less than I paid , Im wondering if the HSU VTF-3 MK2 would be a worthy exchange?, I was looking at the MK3 but my room is only 10hx12w13l so an MK3 might be overkill?
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post #186 of 274
3/1/07 at 7:56pm
You guys have some really strong numbers! I still have to EQ my setup as I'm down 7db at 30Hz. I can get another 5 db if I move my sub but I need to keep it where it is due to WAF.

1. 100dB on analog meter
2. haven't measured at 1m
3. 2750cf, open to hallway
4. Hsu VTF-2 Mk3, Max Extension mode (1 port plugged)
5. "0" MV, sub calibrated +3dB
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post #187 of 274
3/1/07 at 8:00pm
Quote:
Originally Posted by bgillyjcu View Post

WAIT....750 cubic feet sealed?

Are you sure thats not square feet?

Cubic is Lenght x width x hight

(not trying to sound like a dummy here....just asking to make sure..)


Take that back 880 cubic feet. After you asked I got out the tape measure to see what it really was. Still a small room in a small house.
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post #188 of 274
3/1/07 at 8:19pm
Quote:
Originally Posted by MKtheater View Post

Here are the new numbers with 25 hz tune
1. 111 db from Listening Position (analog SPL Meter-fast)
2. 118 db from 1 meter (analog SPL Meter-fast)
3. 2300cuft (sealed )
4. A single SVS PB12/plus/2 tuned in the 25 hz tune
5. Master Volume -10db Sub calibrated to 75db on SPL meter. Ref is 0, all speakers are set to 75 db's.

1. 114 db from Listening Position (analog SPL Meter-fast)
2. 120 db from 1 meter (analog SPL Meter-fast)
3. 2300cuft (sealed )
4. A single SVS PB12/plus/2 tuned in the 25 hz tune
5. Master Volume -5 db Sub calibrated to 75db on SPL meter. Ref is 0, all speakers are set to 75 db's.

1. 116 db from Listening Position (analog SPL Meter-fast)
2. 122 db from 1 meter (analog SPL Meter-fast)
3. 2300cuft (sealed )
4. A single SVS PB12/plus/2 tuned in the 25 hz tune
5. Master Volume 0 db Sub calibrated to 75db on SPL meter. Ref is 0, all speakers are set to 75 db's.

Killer numbers for a sub at that price. Can you do 20Hz too James? I see just minimal compression.
Thanks,
-Jai
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post #189 of 274
3/1/07 at 8:34pm
My wife won't let me do that test again until I shovel my roof. She thinks the roof will cave in. So Maybe tomorrow. It is weird to play the subwoofer without the other speakers.
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post #190 of 274
3/1/07 at 10:58pm
I have a SVS 20-39pci sub in a 15x28x8' room (3360 cubic feet). In addition, it has 2 door openings that can't be closed nad an opening to a dining room kitchen area. I am really surprised at my numbers, and this is at the high end of my listening level, but not the system or sub's max.

1) 104 Ddb at the listening position (~12 feet from sub).
2) 113db at 1 meter from sub (RS Analog meter (uncorrected), measured with only sub on).
3) 3360 cubic feet (opening to dining room and 2 doors)
4) SVS 20-39pci (EQ with Denon AVR - Audessey)
5) 0MV

Regards,
Darrell
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post #191 of 274
3/2/07 at 4:44am
Thread Starter 
Quote:
Originally Posted by MKtheater View Post

Here are the new numbers with 25 hz tune


1. 114 db from Listening Position (analog SPL Meter-fast)
2. 120 db from 1 meter (analog SPL Meter-fast)
3. 2300cuft (sealed )
4. A single SVS PB12/plus/2 tuned in the 25 hz tune
5. Master Volume -5 db Sub calibrated to 75db on SPL meter. Ref is 0, all speakers are set to 75 db's.


This one looks to be the sweeeeet spot!!!!

I'm with Jai....can we get you to try 20.
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post #192 of 274
3/2/07 at 6:47am
You guys act like you are bothering me, this stuff is fun. The problem is that I only could do this when everyone is asleep(kids anyway). I will run 20 hz tune tonight. I am guessing 119-120 at 1 meter and 112-113 at front and center seat. BTW that 122 reading is at the back center seat since it is 1 meter away. Everyone loves the back row. It is like having a sub and a buttkicker rolled into one.
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post #193 of 274
3/2/07 at 7:24am
My new subs are arriving today. 350 pounds for 2 boxes. I have high expectations for these. They are very effecient at 100 db's at 1 watt and can handle 750 watts rms and 1500 watt peak. Now add 6 db's for 2 and you can figure out how loud they can play. The question will be sound quality, extension, and most important, pure fun factor while watching a movie. If my cables arrive as well I will be running Darla with these too.
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post #194 of 274
3/2/07 at 7:34am
Quote:
Originally Posted by MKtheater View Post

You guys act like you are bothering me, this stuff is fun. The problem is that I only could do this when everyone is asleep(kids anyway). I will run 20 hz tune tonight. I am guessing 119-120 at 1 meter and 112-113 at front and center seat. BTW that 122 reading is at the back center seat since it is 1 meter away. Everyone loves the back row. It is like having a sub and a buttkicker rolled into one.

As a rule, subs are turned off at 10:00pm in our home. So I totally understand.
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post #195 of 274
3/2/07 at 8:27am
That is when I could let it rip, Thanks God for a big house and a dedicated room that is insulated very well. The kitchen takes a beating(directly above the theater) but the bedrooms are silent. My previous house had the theater(really a basement with my equipment) right under the bedrooms, forget about movie watching at night.
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post #196 of 274
3/2/07 at 6:55pm
Well I finally did this test. Dual SVS CS-Ultra in the same corner powered by EP2500. Calibrated 75 dB w/ RadioShack analog SPL meter @ 0mv. Bass xover 80Hz. Sub channel only. Room is ~7,000 cubic ft.

Sorry for not following the format but I took a lot of samples. SPL format is LP/1m.

20 Hz tuning

-15mv: 93/105
-10mv: 98/109
-5mv: 101/112
0mv: 105/116
+5mv: 108/119

16 Hz tuning

-15mv: 92/104
-10mv: 97/108
-5mv: 99/112
0mv: 104/115
+5mv: 107/118

I heard new things shake and rattle at +5. Got some of that "chest-pounding" that everybody raves about for +5 @ 1m. Wish I had a smaller room. Saw the clip light briefly flicker once at +5 so I stopped there.

I think in my next place the subs will be nearfield. Yeah, definitely nearfield
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post #197 of 274
3/2/07 at 7:46pm
What do you guys mean when you say "-10 MV" ,Can someone point me to another thread or source of info on what all this stuff means
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post #198 of 274
3/2/07 at 9:30pm
Quote:
Originally Posted by jvgillow View Post

Well I finally did this test. Dual SVS CS-Ultra in the same corner powered by EP2500. Calibrated 75 dB w/ RadioShack analog SPL meter @ 0mv. Bass xover 80Hz. Sub channel only. Room is ~7,000 cubic ft.

Sorry for not following the format but I took a lot of samples. SPL format is LP/1m.

20 Hz tuning

-15mv: 93/105
-10mv: 98/109
-5mv: 101/112
0mv: 105/116
+5mv: 108/119

16 Hz tuning

-15mv: 92/104
-10mv: 97/108
-5mv: 99/112
0mv: 104/115
+5mv: 107/118

I heard new things shake and rattle at +5. Got some of that "chest-pounding" that everybody raves about for +5 @ 1m. Wish I had a smaller room. Saw the clip light briefly flicker once at +5 so I stopped there.

I think in my next place the subs will be nearfield. Yeah, definitely nearfield

I had dual CS-Ultras too with a Crown K2. Killer subs. It was almost like it would rip off the floor boards at +5. Minimal compression and doesn't it feel like they ask you give me more
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post #199 of 274
3/2/07 at 10:10pm
Quote:
Originally Posted by Mathesar View Post

What do you guys mean when you say "-10 MV" ,Can someone point me to another thread or source of info on what all this stuff means

MV is the Master Volume. The number is what a particular AVR shows for a location on the dial. If you have a well calibrated AVR, the numbers should correspond to the increase in volume. So, -5 should be 5db higher then -10. The actual volume you get is determined by where the MV was set when you calibrated to volume for each channel. If you calibrate your sub for 75db with the MV set to -10, then -10 is your reference volume setting. If you calibrate to 75 with the MV at 0, then 0 is your reference level.
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post #200 of 274
3/3/07 at 2:20pm
1.) 109db approx. 12 feet
2.) 115db 1 meter
3.) 2800 cuft room open to hallway on one end and kitchen on the otherside
4.) Single JL Audio Fathom F112
5.) ARO corrected, sub level calibrated at 75db
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post #201 of 274
3/3/07 at 9:04pm
I am a comlete noob and am in the middle of a professional install. I have no furniture and am set up in a completely live room. This is a new addition and I have no furniture or carpet and a very nice concrete floor. Hopefully, the rug and furniture will arrive soon. The Monitor Audio RW 12 sub just friggin scared the bejeezus out of me. I had been testing the system at a modest -20 with the opening scenes from Saving Private Ryan. That was awesome. I read this thread and grabbed my kids Nemo DVD and popped it in. I set it at 0 and proceeded to scare myself half to death. Good lord. I can't imagine more sub. That practically blew the friggin windows out. I have no meter but my ears say that was plenty. Now for that WOTW scene....
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post #202 of 274
3/6/07 at 2:28pm
Thread Starter 
has this thread gone its limit?
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post #203 of 274
3/7/07 at 9:11am
Maybe I missed it but has anyone with dual subs (besides the 18in beasts) done this test?
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post #204 of 274
3/7/07 at 10:08am
I will be getting dual HSU HO's at the end of the month, if the thread is still going then I will give my numbers. Same thing with the WOTW thread.
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post #205 of 274
3/7/07 at 10:16am
Thread Starter 
SWEET Kevin....can't wait to see those impressive numbers!!!
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post #206 of 274
3/7/07 at 12:01pm
I never ran this test with the new subs yet, the numbers I posted are with my SVS. I will have to throw nemo back in.
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post #207 of 274
3/7/07 at 12:14pm
Kingrsl,

My test was with dual subs.
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post #208 of 274
3/24/07 at 10:40am
1. 105db from Listening Position (Digital SPL Meter--Max)
2. 117db from 1 meter (Digital SPL Meter--Max)
3. 2000 ft^3 (not sealed-open to rest of downstairs townhouse {4000ft^3})
4. A single PB10-ISD
5. Master Volume -0db, Sub Volume -6db, Sub calibrated to 85db on SPL meter (uncorrected)

Edit: Sub Volume was -6 db, not -0 db during test.
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post #209 of 274
3/31/07 at 8:57pm
Was finally able to test this scene (borrowed a copy from my parents).

1. 110dB @ LP
2. n/a
3. 4,800 ft3
4. HSU VTF3 MK3, no turbo, 18Hz tuning
5. Master volume @ -7dB

-GL
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post #210 of 274
4/1/07 at 4:50pm
Art needs to join in this !(hint)
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