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BassThatHz Theater Build - Page 11

post #301 of 730
Thread Starter 
Quote:
Originally Posted by LTD02 View Post

is it my eye or is the subwoofer in the picture not even connected?
Exactly! It's totally unuseable as configured. Look closely at the amplifiers, there isn't a single power wire, speaker wire or interconnect wire to any of the 16 MC-2102 200watt tube amps he has there, nor speakers.

It's a total prep-shot for the news/tv.
There is a reason why people build amplification closets:
  • Heat management
  • Power management
  • Interconnect distance minimization
  • Line Noise minimization
  • Fan Noise minimization

Few people want to sit in the middle of a rats nest of cables, fans, amps and speakers. (Well, most people anyway. biggrin.gif)

From what I can see, there is roughly $100k in amplification in that room (factoring in a bulk discount). Looks like he has about 7200watts in there.
So where did the rest of the money go I wonder?
post #302 of 730
Books. smile.gif
post #303 of 730
"So where did the rest of the money go I wonder?"

he's probably quoting m.s.r.p. not what he actually paid. i'm almost wondering if he even paid anything for it and it is just one big marketing stunt (which is working).

did he disconnect all the wires for the photo shoot or never even hook them up because they have to go back to the factory the next after shoot is over? :-)

the "six million dollar theater" was the "two million theater" in other articles.

price keeps going up like a fish story.
post #304 of 730
There's a video of it on Youtube: http://www.youtube.com/watch?v=Wof74IUmVx0

By the way- this thread is legendary. smile.gif
post #305 of 730
This video has a little more detail.

http://www.youtube.com/watch?v=KptVIB1KYpk
post #306 of 730
Thread Starter 
Here's my old REW, I have to match or best this in the new theater. I have my work cut out for me.
old1t.jpg
old2f.jpg
old3m.jpg
post #307 of 730
Thread Starter 
Oops, I had smoothing enabled. I was wondering why it looked more-smooth than what I had recalled. DOH! Still, it's gonna be mission impossible.
old1i.jpg
post #308 of 730
Quote:
Originally Posted by BassThatHz View Post

Oops, I had smoothing enabled. I was wondering why it looked more-smooth than what I had recalled. DOH! Still, it's gonna be mission impossible.
old1i.jpg

As a noob (to the AVS site anyway), I'm almost afraid to ask this question.. but what the hey.. what kind of signal processing did you have to deploy to accomplish such a flat response?? EQ, DSP, feedback destroyer?? Or all the above??

I've been looking into equalizers on the net/ craigs list to see if I can find a deal for my futuere HT.. it will probably be more for lower frequency duties, so I don't want to go overboard.. anyway, you should have more success taming that pesky 25hz in your new room.. cool.gif
post #309 of 730
Thread Starter 
Quote:
Originally Posted by dRwOOD73 View Post

As a noob (to the AVS site anyway), I'm almost afraid to ask this question.. but what the hey.. what kind of signal processing did you have to deploy to accomplish such a flat response?? EQ, DSP, feedback destroyer?? Or all the above??

I've been looking into equalizers on the net/ craigs list to see if I can find a deal for my futuere HT.. it will probably be more for lower frequency duties, so I don't want to go overboard.. anyway, you should have more success taming that pesky 25hz in your new room.. cool.gif

I have 16 channels of DSP:
1 BFD (2-ch)
1 DEQ (2-ch)
1 DCX (6-ch)
1 iTech (2-ch)
2 XTI (2-ch)
For a total of 16.

Note: All my subwoofers are sealed. My room has acoustical treatments and I have many subs, so that goes a long ways to smoothing the response all by itself.

So I have 16 HPF/LPF's, 12 phase, 12 delays, and somewhere around ~300 EQ filters available (I don't use most of them), most of those are parametric, roughly 20 are dynamic.

However, because of how I have them and the amps connected (stereo-bass in series) that is reduced down to 6x2 i.e 10 discrete and 1x2 coupled.
But of those 12, only 10 DSP channels are actually used (as of 2013).

To make that 2012-graph, I only had 4 DSP channels activated, of the 12.

2 on 4 mid-woofers, and 2 on 4 sub-woofers.
The other 5 subwoofers had no EQ applied.
But all 9 subs and 4 mid-woofs had overlapping XO's applied (FYI).

My BFD and DEQ are in pass-thru mode, I only use them for XLR conversion and continuous graphical RTA display.
So they aren't doing anything to the signal, FYI.
The DCX and Crowns do all the heavy work.

Of those 4 DSP channels, I used pretty much all of the filters available (~24) for the bass region (mostly) from 20hz and above (all the way to 700hz).
I didn't have to use that many filters, but the capacity was there, so I thought I'd put them to use.
post #310 of 730
Thanx for the breakdown... like I said, impressive and a bit scary eek.gif, I'll be googling most those acronyms for a couple hours now.. thatz cool though - I'm here for the education as well as the scenery.. good luck with the rest of your dedicated build
post #311 of 730
Thread Starter 
Here's a REW overlay of 4, 7 & 9 subs.

This graph is even older (early summer 2012 I think).


Green is 4 un-eq'ed, yellow is 7 un-eq'ed and blue is 9 un-eq'ed, red is minimal eq. This was when I had 6 subs running on just one EP4k.
post #312 of 730
Thread Starter 
Status Update: On my way home, I'm purchasing some 3/4" MDF for my amp shelves today.
Hopefully they won't bend (much), it needs to handle 80lbs across a 23x20 span. I don't want a big bow in the middle after a year of static load.
post #313 of 730
Why not just employ birch plywood? Infinitely stronger, much less prone to warping/flex and looks a helluva lot better. $35-$40 a sheet for BB at my HD.


James
post #314 of 730
Quote:
Originally Posted by mastermaybe View Post

Why not just employ birch plywood? Infinitely stronger, much less prone to warping/flex and looks a helluva lot better. $35-$40 a sheet for BB at my HD.


James

Yeah but aren't those sheets like 1/4"? no way 1/4" is stronger than 3/4" MDF
post #315 of 730
PSH, that 6 Million dollar theater is nothing compared to someone with REAL money can do!

Seriously though, I'm sure his room measures half decent.

That said, that room is not something that I would consider "liveable" ESPECIALLY in the summer time....however, I wouldnt be surprised if they can afford to keep their A/C running and have the house at a cool 65F with all the amps running....

There are many more on this forum with a system that measures just was well, if not better, for less money.
post #316 of 730
Thread Starter 
Here they are, now I just have to measure/cut these out.
I'll be putting trim on the front, and I might paint these with black duratex to make it look nicer.


post #317 of 730
Thread Starter 
Quote:
Originally Posted by Rebel975 View Post

http://www.youtube.com/watch?v=Wof74IUmVx0
That sounds like poop. What a waste of money. Additionally, my system is a million times louder than that, he needs to turn it up biggrin.gif
post #318 of 730
Thread Starter 
I can support 48RU. It is 4ft x 2ft times 5. So 40sqft of rack space.
So I won't even need the 3rd sheet...
post #319 of 730
Google sagulator. Mdf is at the bottom ofthe list. Input dimensions and it calculates sag. I would put a stiffning strip along the front ege. .75 wide strip gives the shelf a look of 1.5 thick and provides improved stiffness.
post #320 of 730
Thread Starter 
It told me 1/100th of an inch. I can live with that.
post #321 of 730
Thread Starter 
Status Update: Amp rack is done. Well version 1.0 of it at least... biggrin.gif

I levelled it, it is perfectly flat to within +- 1mm.

I was able to put over 200lbs on one side of one shelf and it held without collapse. In actual use it will be 80lbs or less.
The total of my gear is just a touch over 340lbs across all 5, so should be good-to-go.
I also reinforced it at the top and bottom, just to make sure $18k worth of electronics doesn't come falling down.





Edited by BassThatHz - 3/10/13 at 8:14pm
post #322 of 730
Thread Starter 
I need to buy a 200ft CAT-6 cable for the data pipe.
post #323 of 730
Thread Starter 
This song draws a surprising amount of power, I rarely see those LEDs light up, because it's so high in frequency,
ranging from 180hz to 40hz. (three upper octaves of bass.) The kick-drum range. My PA subwoofers love eating that stuff up.
What makes my system that much more devastating than few others, is that my system emits bass equally across almost all of the bass frequencies, simultaneously.
That's something you won't get with commercial best-buy type systems.

post #324 of 730
Thread Starter 
I bought 500 of these today.


post #325 of 730
Thread Starter 
Status Update: Change of plans... That won't work. It turns out that I don't have the time nor patience for using that method. biggrin.gif
I gave up after fighting with tacks for 5 hours. It would take me a month, so I ended up stapling it on and will cover the staples (and cloth fray/bunchings) with molding.


post #326 of 730
Thread Starter 
Status Update: I should have the columns done by tomorrow. Then it's wiring time.

post #327 of 730
Thread Starter 
Status Update: Bought some cosmetic items today.

Bar-table surface (Potentially):


15amp 120v line feeder (dual-male), I need this for my projector. It's a custom built, off-grid socket run, for the pure sinewave UPS source:


Sconce for the double-door entryway/boot room:


Brushed metal socket plates for the columns:


SHINY SQUIRREL
post #328 of 730
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
post #329 of 730
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

+1001!

Never ever use a male-male extension cord and never ever trust the safety equipment to save you in the event of a mishap. You might fry your hand or get killed... Is this even legal in the US? It certainly wouldn't be here in Denmark.

Dan
post #330 of 730
Not sure what you're trying to do, but that cord is an electrocution waiting to happen.
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