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BassThatHz Theater Build - Page 12

post #331 of 730
Thread Starter 
Quote:
Originally Posted by NathanJ View Post

That projector cord is pretty dangerous. I would suggest a power inlet box. http://www.amazon.com/gp/aw/d/B002XDQAA6/ref=mp_s_a_1?qid=1363464754&sr=8-1&pi=SL75

I need something more like this...
http://www.newegg.com/Product/Product.aspx?Item=104-001G-00001
post #332 of 730
Thread Starter 
Status Update: Final cleanup starts tomorrow. Bought 400ft of molding today and the columns are now insulated and roughed in (95%).
Took a few more hours than I anticipated.

Audio socketing should start tomorrow, and the influx of speakers and temporary seating.
The lighting fixures will hopefully be installed soon as well.








post #333 of 730
Thread Starter 
I'm gonna have to fix my attic hatch, the bass was lifting it up off it's track (the one sheet of 5/8's with just 2 subs) eek.gif
The problem is that the room is so air-tight that there is nowhere for the bass to go, so the attic hatch is acting like a release valve. eek.gif


That ought to do er... biggrin.gif
post #334 of 730
A few swiveling latches and some kind of gasket or door weather stripping ought to do the trick.
post #335 of 730
Thread Starter 
Massive Status Update: The big move is 85% done.

More acoustics and subs


3D Diffusers


Got Wire?


Side and Rears


Side and Rears, Rear Left sub


Amp rack from far


Amp rack from close


Rear channel amplifier (~1000watts)


Mid bass amps, XTI-4000 (~6400watts)


Subwoofer amp Itech 8000 (~8000watts) Two LMS Ultra's
Subwoofer amp Lab 10kQ clone (~8400watts) Two 21's and Two 15's


Subwoofer Dayton PA-18 amps (~8000watts)


Tweeter amps (~3000watts)


500GB HDPVR, Behringer DSPs, UMC-1 (movie-mode DAC)


I'm not looking forward to the wiring job ahead of me!!!!!!!!!!!!!!


I moved like 800lbs of stuff today, my back is killing me.... and there is more to come yet; all heavier of course!!!
post #336 of 730
Thread Starter 
Here is the Extreme Reference 1 pre-amp for music-mode that I'll be adding to my rack (this is comparable to the Classe 800, at 1/10th the cost.)



Also this 2kW 120v 20-amp PureSine UPS to better protect some of the low-powered gear.



I'll be adding these two big hitters to my rack over the next few months.

At that point the noisefloor should drop from about 95db to 125-110db, and with better channel separation too, and I should hopefully be flat to at least 4hz (right now I'm electronically rolled -7db @ 5hz).

Looks like I'll have to build another two shelf rows.
post #337 of 730
Thread Starter 
Status Update: The big move is 95% done.

Got all the interconnects wired up and most of the subwoofers, and my mains. Took me 5 hours.

I haven't done ANY speaker cables or power cables yet, that stuff is going to take FOREVER because each conductor is custom fit!
























post #338 of 730
Quote:
Originally Posted by BassThatHz View Post

smile.gif

Now hang on, you make all these videos of your system and your using a Sanyo FH1A camera! I want to see some 600FPS slow-mo shots of the subs biggrin.gif
post #339 of 730
Thread Starter 
Quote:
Originally Posted by mtg90 View Post

smile.gif

Now hang on, you make all these videos of your system and your using a Sanyo FH1A camera! I want to see some 600FPS slow-mo shots of the subs biggrin.gif

Here is slo-mo of LMS-5400 near xmech @ 1-ohm iTech power.



The LMS is beggin, please sir, no more Stretchy Stretchy. biggrin.gif
post #340 of 730
Thread Starter 
I guess I should also start working on the second LMS-18 box for the left side mirror-image, and finish painting the subs. Been sitting on my thumbs for an entire year now redface.gif
post #341 of 730
Totally nuts, but mostly just awesome! I don't envy the wiring you have ahead of you, though.
post #342 of 730
Quote:
Originally Posted by BassThatHz View Post

Massive Status Update: The big move is 85% done.

Amp rack from far


Amp rack from close
Quote:

Curious as to why you made the rack so wide and what your plans are for trimming it out? I built mine standard rack width way could use the mid atlantic custom face plates if ever decide to way would look like my theater rack.

[URL=http://013.jpg][/URL]

It looks a little different now that have finished the drywall flush with the edges and painted but still same similar to yours. Although; it did take me a few hours of saw sawings the frame work to squeeze it into place (more time than it took to cut and assemble the whole rack for sure).
post #343 of 730
Quote:
Originally Posted by BassThatHz View Post

Here is slo-mo of LMS-5400 near xmech @ 1-ohm iTech power.



The LMS is beggin, please sir, no more Stretchy Stretchy. biggrin.gif

I literally feel sorry for that driver lol. At the price, I dont even know if I could push mine that hard. Do distortion measurements show any jumps when its being pushed that hard? I know Not posted some vids of his surrounds doing the same thing at one point and it just blew my mind the first time I saw it.
post #344 of 730
Thread Starter 
Status Update: Power Management is now installed.

kWH meter for the low-power devices (i.e <11amps)


Note: Almost all cables have RF ferrite chokes on them (couldn't hurt, might help).

Level 1: Surge protection, Power filtering, and modified-step UPS (this will be replaced by 20-amp pure-sinewave UPS)


Level 2: More Surge protection, and Power filtering +-1 Volt (AC to DC to AC pure-sinewave power-regenerator)
Removes 2-3% harmonic line distortion on average, and will boost/cut in pure-sinewave mode.


Incoming Distortion



Output Distortion



Crown amp System Architect Switch


Real-Time Continous In-Room Analysis Mic (DEQ)
post #345 of 730
Thread Starter 
Quote:
Originally Posted by audiovideoholic View Post

I literally feel sorry for that driver lol. At the price, I dont even know if I could push mine that hard. Do distortion measurements show any jumps when its being pushed that hard? I know Not posted some vids of his surrounds doing the same thing at one point and it just blew my mind the first time I saw it.

Yes the LMS does distort once the surround starts to dipple like that, but it is very slight and in movies with dynamic peaks you could easily dent the cone in 1/30 of a second on a burst if you're not careful.

Yes, he was doing 10hz at 4-ohm at 30FPS.
This is 30hz @ 1-ohm at hundreds of FPS. If I recorded 10hz like this, the video would be 3 times longer (10 seconds turns into a full 6 minutes) and 3 times slower (every cycle would take about 1 or 2 seconds).

I plan to put a glass door on it. Trim will have to wait for a few months. I made it wider so that it could dissipated heat faster and Hi-Fi doesn't all adhere to 19" rack dimensions (never know what the future holds).
I might make a nice full height face plate down the road.
post #346 of 730
Quote:
Originally Posted by BassThatHz View Post

Yes the LMS does distort once the surround starts to dipple like that, but it is very slight and in movies with dynamic peaks you could easily dent the cone in 1/30 of a second on a burst if you're not careful.

Yes, he was doing 10hz at 4-ohm at 30FPS.
This is 30hz @ 1-ohm at hundreds of FPS. If I recorded 10hz like this, the video would be 3 times longer (10 seconds turns into a full 6 minutes) and 3 times slower (every cycle would take about 1 or 2 seconds).

I plan to put a glass door on it. Trim will have to wait for a few months. I made it wider so that it could dissipated heat faster and Hi-Fi doesn't all adhere to 19" rack dimensions (never know what the future holds).
I might make a nice full height face plate down the road.

Ah OK, so will finish the back too I guess if going to have glass door? Anything special like gas filled or anything for sound proofing, gotta ask since your other methods of sound proofing have been rather great. And yeah not all equipment is rackable so to say but not many will be wider. I have noticed that my closet, very close to the size of your equipment area is rather hot since messing with my minidsp in there quite often and have two exhaust fans and a return in there. Get ready to break a sweat when tinkering while the equipment is on in other words lol.

A full size plate was my inital thought as well, a router and many templates would get the job done on a thin sheet of board all while saving up to a couple grand in the process. And not only that it would be solid where the custom plates can leak a little light where they join one another. That would be the best looking trim job for sure and most likely take a very long time, but when done would be the best of the best.

I'm really liking that power filtering unit. I've never even looked into anything like that before.
post #347 of 730
I thought of something pretty cool, or maybe it's stupid.

Could you rig up your system so that maybe 2 of your subs are playing. Do a demo. After they say something about the bass, you could go over, 'check something'.

"Oh, you are right! I guess only 2 of the subs were on. Hold on, let me turn the other subs on too".

And then they get the full effect of the.... 16 subs? Or was is 12.
post #348 of 730
Thread Starter 
Uh Oh, Houston we have a problem...
My neighbor said I was shaking his dishes with "just" 6 subs activated.

Through a 13" thick wall (double 2x4), 60ft of air/dirt, and then through his exterior house wall (2x6).

I'll have to take precise measurements, but I believe that nothing above 200hz can be heard from outside, even at 105db-A.
The bass was above 55db-C in 2PI space @ 60ft, and that's all I know... (thus far).
post #349 of 730
LMAO I know its not funny to you but think you'll need an excavator unless you move out of the suburbs. I get a little bit of vibration in the main house (55' away).

But seriously, that sucks after all the soundproofing you've done. You/everyone knows there is no stopping the LF from traveling but would have thought atleast some of it would be dampened enough for you to enjoy the room. Looks like you might want to know that family's schedule if ever want to enjoy your hard work. Thats such a bummer!
post #350 of 730
Thread Starter 
Here's a video of the 6 subs.
I think I just about have the room acoustics dialed in.

I tune everything by ear BTW, I don't take measurements until AFTER I'm happy with it. It seems backwards but it works for ME.

The room is nearly anechoic now, about a 50% coverage, out of a total surface area of 1432sqft. It works out to a surprising amount of absorption to get the job done.

I can pump it louder than what I could before without people complaining, so I've already gained on that front.
But I think I'm going to have to spend another $800 to double the mass of the outside wall (I kind of figured that before the project even started, this just confirms it). Still sucks that I have to spend more money though...
post #351 of 730
Thread Starter 
Status Update: Lighting is completed. Another major milestone achieved.

No more flood lamps.

Just have to finish the audio sockets and then it is basically done. (It's never truly done-done).











Light Aziz! Light! biggrin.gif
post #352 of 730
Lightning fast on this build, nice work! Have you been doing everything yourself?
It's funny, you started your build around the time I finished my drywall. Now you're almost done and I'm still 1/3 of the way through with my trimwork and weeks away from carpet.
post #353 of 730
Quote:
Originally Posted by rader View Post

Lightning fast on this build, nice work! Have you been doing everything yourself?
It's funny, you started your build around the time I finished my drywall. Now you're almost done and I'm still 1/3 of the way through with my trimwork and weeks away from carpet.

Tell me about it. I've been going over a year now with about a 1/3 the progress. I swear I've spent every free minute working on it too. cool.gif
post #354 of 730
Totally speechless eek.gif, AWESOME BUILD!!!
post #355 of 730
Quote:
Originally Posted by BassThatHz View Post

Uh Oh, Houston we have a problem...
My neighbor said I was shaking his dishes with "just" 6 subs activated.

Through a 13" thick wall (double 2x4), 60ft of air/dirt, and then through his exterior house wall (2x6).

I'll have to take precise measurements, but I believe that nothing above 200hz can be heard from outside, even at 105db-A.
The bass was above 55db-C in 2PI space @ 60ft, and that's all I know... (thus far).

These may help to keep your neighbors dishes from shaking:

http://www.auralex.com/sound_isolation_subdude/subdude.asp
post #356 of 730
Thread Starter 
I got 8 subs up and running now. I'm speechless.

I can't play it for more than two thumps, otherwise cops would probably show up.

I should have made it completely underground.

I should have movie capability by the middle of the week; waiting on a few more parts.
I have a problem with my center channel tongue.gif
Up until now I've been using a floorstanding model.
Guess I will have to upgrade to the Diamond center. Ouch!
post #357 of 730
Quote:
Originally Posted by BassThatHz View Post

Uh Oh, Houston we have a problem...
My neighbor said I was shaking his dishes with "just" 6 subs activated.

Through a 13" thick wall (double 2x4), 60ft of air/dirt, and then through his exterior house wall (2x6).

I'll have to take precise measurements, but I believe that nothing above 200hz can be heard from outside, even at 105db-A.
The bass was above 55db-C in 2PI space @ 60ft, and that's all I know... (thus far).

That's too bad BTH...all that work and still rattling the neighbor's fine china when not even at full strength with the subs. frown.gif

I keep reading thread after thread about all of these heavy-hitting systems on AVS and want to be one of the cool guys too! cool.gif I'm in position to be there with 4 FI 18's and 8 SI 18's IB in the HT room, and have the tapped horn thing covered for my family room with 10 Lab15 drivers that would make big noise in a TH-50-like cab from LilMike (4 of these would be plenty). Also have 4 DTS-10's...well, 1 unbuilt DTS-10 and 6 DTS-10 drivers... wink.gif

It's situations like yours that make me realize I have no chance in my current house of running any of the desired sub systems at anywhere near full volume without getting a knock on the door from the cops...which just became a much more likely possibility as the new neighbor across the street is a police captain. The guy next to him is a county attorney. The neighbor closest to the subs is the safety manager at a coal mine; not anything menacing authority-wise but his mine has been written up for numerous OSHA safety violations over the last year and he's cranky these days. biggrin.gif He's already complained about the single 12" TH in my garage system vibrating the walls in his kitchen 60' away. The lots around here aren't exactly tiny at 1/3 to 1/2 acre, but we are talking about subs with slightly above average firepower. smile.gif

I've thought about jackhammering out my 1200 sq.ft. garage floor and going underground, but the reality is this lot is nice but not special enough to justify that kind of remodel investement; it'd make much more sense to sell this place and build again.

Thanks for sharing your build!
post #358 of 730
So much epic in this thread that I feel I just have to post. Have you looked into vacuum panels for ULF isolation? The problem is it all leaking through at the structural and boundary points, but there still might be solutions. I saw some research papers a while back, but I don't know if there are commercial products. 1 mm of true uninterrupted vacuum is better than 3 ft of concrete.



p.s. That couch in that room is hilarious. Probably costs less than one of your tweeters.
post #359 of 730
Quote:
Originally Posted by andy497 View Post




p.s. That couch in that room is hilarious. Probably costs less than one of your tweeters.

it looks like my 200$ futon lol

and yes this is a truly epic build
post #360 of 730
Your screen is wobbling there, isn't it? I recall someone asked before about why you don't do a fixed AT screen. I don't remember your answer - maybe time to revisit that? Bigger screen, no wobble, and you could keep your CC tower.
Quote:
Originally Posted by BassThatHz View Post

I got 8 subs up and running now. I'm speechless.

I can't play it for more than two thumps, otherwise cops would probably show up.

I should have made it completely underground.

I should have movie capability by the middle of the week; waiting on a few more parts.
I have a problem with my center channel tongue.gif
Up until now I've been using a floorstanding model.
Guess I will have to upgrade to the Diamond center. Ouch!
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