BassThatHz Theater Build - Page 11

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. )

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?

Here's my old REW, I have to match or best this in the new theater. I have my work cut out for me.

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.

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.

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.

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.

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.

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

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...

It told me 1/100th of an inch. I can live with that.

Status Update: Amp rack is done. Well version 1.0 of it at least...

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

I need to buy a 200ft CAT-6 cable for the data pipe.

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.

I bought 500 of these today.

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.
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.

Status Update: I should have the columns done by tomorrow. Then it's wiring time.

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