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post #3331 of 3984 Old 06-17-2015, 08:25 PM
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Quote:
Originally Posted by carp View Post
Wow Scott!!! Looks incredible! I have to try to sneak over to your place when I'm out your way in October. I have to experience this room!!
Hey! Thanks, man. I really appreciate the nice comment.

Would be totally awesome if you could make it my way. Even just to hang out again. I'm not sure how impressed you would be though. My room complains too much when I push for the bass and volume levels I really want and got to experience at your place. Enders Game at your place made me like: Heheh.

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post #3332 of 3984 Old 06-17-2015, 09:29 PM
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Quote:
Originally Posted by Scott Simonian View Post
Hey! Thanks, man. I really appreciate the nice comment.

Would be totally awesome if you could make it my way. Even just to hang out again. I'm not sure how impressed you would be though. My room complains too much when I push for the bass and volume levels I really want and got to experience at your place. Enders Game at your place made me like: Heheh.

I'm sure I'll love it man. Even if we didn't even turn on the system - just looking at your front wall in person will probably make me giggle like a kid.

Last week I went to Luke Kamp's place to hear his 1099's but mostly to experience his flimsy riser with the huge buttkicker on it. Ha - he calls me later and tells me that it turned out he had knocked loose one of the speakers wires while moving some stuff around and the BK wasn't even on when I was there! I didn't mind, I had a blast and I love hearing other setups and I figured it would just give me an excuse to go back for round 2.
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post #3333 of 3984 Old 06-17-2015, 09:44 PM
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Haha! Nice. Yeah, Luke has two nearfield HT18's right behind the seats so I wouldn't doubt it was still intense.

Oh. On that note. So far this subwoofer riser is like this perfect mix of the best traits of the Crowson and Buttkicker. It is very natural like the Crowson but it can also be brutal as f**k like the Buttkicker. I gotta get some more butts in my seats to spread the word that the new hottness is going to be subwoofer risers.

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post #3334 of 3984 Old 06-17-2015, 11:53 PM
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Quote:
Originally Posted by Scott Simonian View Post
Haha! Nice. Yeah, Luke has two nearfield HT18's right behind the seats so I wouldn't doubt it was still intense.

Oh. On that note. So far this subwoofer riser is like this perfect mix of the best traits of the Crowson and Buttkicker. It is very natural like the Crowson but it can also be brutal as f**k like the Buttkicker. I gotta get some more butts in my seats to spread the word that the new hottness is going to be subwoofer risers.
How tall is your riser? My back row riser is 10 inches tall.
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post #3335 of 3984 Old 06-18-2015, 12:15 AM
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It's about 10" tall. Although, as you can see in the pictures, I had to add extra layer of baffles for the 18's cuz they were just too deep. Makes no difference though as it's all covered by the couch I have. Could be a problem for you.

I used 2x8's for the main walls of the riser. There is only single 2x4 in the middle for support. Top and bottom are 3/4" plywood. The extra baffles are 3/4" each and there are four of them per driver. Had them left over from building all my subs a couple years ago.

You could retrofit your riser to work with a couple of HT18's. I'd add a solid bottom to it though.

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post #3336 of 3984 Old 06-18-2015, 10:28 AM
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So for some reason I can't get my REW to recognize my processor for measurements. I am not sure if it is the asio drivers or the outlaw 975. The computer sees the 975 and so does spec lab and REW(until I try to measure). Anyways, the RTA was working and I ran EoT intro just to see how hot I am and I blew something on the Monster Cable AVS 2000 during the 10hz portion. I plugged my DIY 20 amp triggered outlet in and it worked, 132 dB at the 10hz portion. I guess I am 12 dB hot at 10hz.

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post #3337 of 3984 Old 06-20-2015, 06:16 PM - Thread Starter
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Quote:
Originally Posted by Scott Simonian View Post
@dominguez1

AT screen is just a new AT screen. I've had a 100" one since 2008. I've just upgraded it to a new screen material and much larger. Now 126". I was using SeymourAV Center Stage and now it's their new Center Stage UF material.

Also new is that 75% of the room is treated with some acoustic material (ECOSE) where as before almost none of the room had any treatment at all aside from a couple of curtains. That alone made a gigantic change in the sound.

New surrounds. Went from four Emotiva ERD-1 bipole/dipole surrounds to four JBL 8330's. Got them a long time ago and never did anything with them til now. "Free" upgrade.

Only two additional 18's now. Extra pair of Sound Splinter RLp18's that I never got around to using. Needed and wanted a riser so what better than to just make the riser a subwoofer. Lol!

Last year when I built my still-not-officially-named 'mega mains' I had all my 18's up front behind the mains. Now I have a pair each in the rear corners and the eight SI HT18's still up front. Nearfield is a new thing for me.

It was quite amazing how tactile it was before this now it's just ... a whole new level. Sometimes overbearing. I'm still tinkering but after a few weeks of having everything up and running I feel now (with those posted graphs) that my response is a good place and might just be happy. At least for now.


For your chart, my new details:

1) eight sealed Stereo Integrity HT18d4's (four 8cuft dual opposed enclosures)
2) four sealed Sound Splinter RLp18d4's (two 8cuft dual opposed enclosure) *nearfield*
3) two sealed Sound Splinter RLp18d4's (one 14cuft subwoofer riser) *nearfield*
4) six JBL 2226J's (1.5cuft sealed enclosure each)

New room size = 1,900cuft

You don't have to put all that info in there, of course. Just in case you or anyone was interested.
So, here's what I'm using to come up with your score:

8 SI HT18s
6 UXL-18s
3 Dayton UM 15-22

1900cubes

Although, it's not quite matching up with how you did it. What did you use for the 6 2226J's?
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post #3338 of 3984 Old 06-20-2015, 06:28 PM - Thread Starter
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Time to estimate more subs...

PSA V3600? @basshead81 or others...how does this perform in the ULF region compared to other PSA subs (e.g. V1500)?

Will be putting the Cap1400, Dayton UM18-22, HS24, Marianna 18S (HST-18)

How about the DSS Marianna 24? How much does would it differ from from the HS24 performance in its optimal box?

Any other new subs that need estimated?
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post #3339 of 3984 Old 06-21-2015, 12:18 AM
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I think Tom mentioned the V3600i has 6db more headroom over the XV30se with much deeper extension being +/-3db to 16hz.

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post #3340 of 3984 Old 06-21-2015, 12:51 AM
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Quote:
Originally Posted by basshead81 View Post
I think Tom mentioned the V3600i has 6db more headroom over the XV30se with much deeper extension being +/-3db to 16hz.
It's a very intriguing sub, here's the FR graph on it.


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post #3341 of 3984 Old 06-21-2015, 10:04 AM - Thread Starter
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post #3342 of 3984 Old 06-21-2015, 10:29 AM
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Quote:
Originally Posted by dominguez1 View Post
So, is the tune of the V3600 around 18-19hz then? Is it known?
Here is some output info:

V3600 output. (CEA-2010 averaged)
16-25hz ~ 122.3
31-50hz ~ 132.3
63-100hz ~ 136.0
16-100hz ~ 131.8

It's averaged but should provide a ballpark.
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post #3343 of 3984 Old 06-21-2015, 01:06 PM - Thread Starter
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Ok...here's the first go on these:



PSA V3600: Added 6db from XV30SE, and then extended to 12.5hz. I used 12db down from 16hz similar to the Cap1400 difference between 12.5hz and 16hz.

DSS Marianna 24: I compared the XXX on db (small box), versus the estimate for the XXX in an optimal box. At 20hz, it was only a 1db difference. At 16hz, 3db, and at 12.5 and 10hz, 4db difference. These seems to make sense as the small box starts to hamper efficiency and gets more power hungry down low.

Marianna 18: Sames as HST18

Cap2400 17.5hz tune: Up 2db from Cap1400

Thoughts?
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post #3344 of 3984 Old 06-21-2015, 01:29 PM
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I would say that is pretty close.

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post #3345 of 3984 Old 06-21-2015, 04:06 PM
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Quote:
Originally Posted by bear123 View Post
Here is some output info:

V3600 output. (CEA-2010 averaged)
16-25hz ~ 122.3
31-50hz ~ 132.3
63-100hz ~ 136.0
16-100hz ~ 131.8

It's averaged but should provide a ballpark.
Measured at 1m or 2m?
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post #3346 of 3984 Old 06-21-2015, 04:15 PM
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Your Home Theater ULF Score

Quote:
Originally Posted by popalock View Post
Measured at 1m or 2m?

I would assume those are 1m numbers.
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post #3347 of 3984 Old 06-21-2015, 06:35 PM
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yes those are 1m numbers.

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Quote:
Originally Posted by popalock View Post
Measured at 1m or 2m?
1m peak, so -9 dB to match up with the 2m RMS of data-bass.
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post #3349 of 3984 Old 06-21-2015, 10:30 PM
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Quote:
Originally Posted by basshead81 View Post
yes those are 1m numbers.

Why does PSA use averages when they have all of the exact same data that Data-bass.com has? We know they have all of that data so they could present it exactly as Josh does, that way we could see exactly what it can does at 12.5hz, 16hz, 20hz & 25hz at 2m.
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post #3350 of 3984 Old 06-21-2015, 10:34 PM
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Not sure...shoot Tom a email and ask him.

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post #3351 of 3984 Old 06-21-2015, 11:29 PM
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Quote:
Originally Posted by basshead81 View Post
Not sure...shoot Tom a email and ask him.
Haha I think we already know how that'll go.....LOL


It just seems counter productive, they always talk about looking at all of the data not just one metric. They have all of the data and only provide averages for output numbers. Just seems weird.
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post #3352 of 3984 Old 06-22-2015, 07:52 AM
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Probably because like you just said to not focus on one metric. Cea2010 rating is broke down to 2 categories. Ultra low bass (20-31hz) and low bass (40-63hz). Data-bass chooses to measure from 10-125hz but I do not think that is protocol for Cea2010.

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post #3353 of 3984 Old 06-22-2015, 10:22 AM
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Quote:
Originally Posted by dominguez1 View Post
So, here's what I'm using to come up with your score:

8 SI HT18s
6 UXL-18s
3 Dayton UM 15-22

1900cubes

Although, it's not quite matching up with how you did it. What did you use for the 6 2226J's?
I think I put in 3x 21SW152's for the JBL's but I forgot honestly. Three UM 15's would be close in displacement so that works too. I didn't even see UM15's on the list. Either way, close enough.

Watched Lone Survivor this weekend and the whole system sounded great but bass was pretty good too. The Chinook drop off sequence was something else with this subwoofer riser. You guys that can get away with a 10" tall riser should try it. Two 18's is plenty. Wow!

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post #3354 of 3984 Old 06-22-2015, 10:37 AM
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One of my favorite low frequency scenes! It just sounds real.

Marantz 7702 Atmos
3 Inuke NU4-6000 amps for all speakers.
Speakers- 7 Behringer B215XL's, 4 212xl's for ceiling speakers.
subs- SI 18ht x12 IB powered by Inuke 6000.
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post #3355 of 3984 Old 06-22-2015, 10:42 AM
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Felt like this in my couch.


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post #3356 of 3984 Old 06-22-2015, 11:50 AM
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Yes, and whole room.

Marantz 7702 Atmos
3 Inuke NU4-6000 amps for all speakers.
Speakers- 7 Behringer B215XL's, 4 212xl's for ceiling speakers.
subs- SI 18ht x12 IB powered by Inuke 6000.
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post #3357 of 3984 Old 06-22-2015, 11:53 AM
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Well... I was sitting on the couch. I'm sure the rest of the room was feeling similar.

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post #3358 of 3984 Old 06-23-2015, 01:14 PM
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Quote:
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Well... I was sitting on the couch. I'm sure the rest of the room was feeling similar.
Damn nice upgrades.

 


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post #3359 of 3984 Old 06-23-2015, 02:41 PM
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Damn nice upgrades.
Thanks!

Love the new screen and acoustics. Sub riser is fun.

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post #3360 of 3984 Old 06-24-2015, 10:54 AM
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Ok, just thought I'd update you guys on the VibSensor tutorial. I'm getting there. Ran into few roadblocks.

Excuse #1 . A weeklong family invasion and baby shower.

Excuse #2 . The theater being turned into a staging area for several home projects going on. Not COOL!



Excuse #3 . New sub build. I couldn't help myself. Lots of sneaking around when I was suppose to be helping with excuse 1 and 2. Lots of questions like why did it take 4 hours to cut out the new chair bottoms. Um? Because... Uh? I'm a perfectionist. Hey man, whatever works. It got done. The new near field sub is deployed and operational. Performance matched expectation and exceeded in some ways. 120db@5-6hz doesn't suck.



The build thread of the new sub system will come later so I can get the VibSensor done. For something so simple its truly mind boggling how technical and in-depth the study of vibration and PSD and its relation to FFT is. You could easily spend 4-5 years in college and a lifetime studying and experimenting with this. The applications are staggering. I can tell you this, VibSensor is a first cousin to SpecLab. Ones 2D and the other 3D. Its been a lot of fun playing with the accelerometer with taking a variety of real world measurements. The problem with using the VibSensor is it assumes were at a certain level of study or already know basic engineering of vibrational and PSD. We don't or at least I don't so I have to start from scratch and explain to a small degree the basics, for instance what the graph elements mean. Anyway, this at least shares priority now, so it'll be done and ready to post in the coming weeks.
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