AUDI SURROUND
The way we normally watch a movie in the auditorium is to put a DVD in the player down on the AV Cart on the floor.
It goes right to the overhead speakers, and you shouldn't have to do anything else, other than turn the computer or
DVD player on, the projector on, and make sure the MAIN system power is on up in the booth.
Here's a link to instructions for all that
The other way we can watch and listen to a movie is to send the sound through our Dolby Surround processor up in the booth,
which then sends the sound out to more speakers, like at a real theater.
We use the MAIN speakers on either side of the stage as the FRONT left and right.
(which would seem logical but the Dolby processor changes how they sound).
The screen overhead speakers are used as the center channel. There is a sub-woofer up there too.
The surround speakers are hidden up on Catwalk 2.
If you'd like to watch and listen to a movie in Surround Sound,
you only have to let someone know ahead of time and it will be set up for you.
All that is needed is to switch a few things over in the booth and you're ready to go.
This is information on how the system works,
and instructions for the people who will be setting it up.
*First, you need to unplug the two cables with green tape from the patch panel,
and put them on the hanger to the left side of the cabinet.
This sends the sound to the big mixer on these left and right channels,
marked FLOOR AV CART.
It's then re-routed from here out to the Surround processor
shown below.
*This is the surround processor box sitting beside the Soundcraft audio board.
There is also a small decoder box we use as a backup.
This is the Soundcraft GB4 mixer labeled for surround. At the top
it shows where the cables from the processor are plugged into.
Along the side it shows the AUX sends for each surround channel.
*There are two ways sound is sent from the AV cart down on the floor to the booth
to connect to the surround processor device. The first is described just below this.
It is an ANALOG connection that you can send the laptop sound, as well as
the Blu-ray player.
After that there will be instructions for a DIGITAL coaxial connection from
just the blu-ray player down on the floor direct to the processor.
This is the part that shows you all about the digital coaxial connection
from the blu-ray player up to the booth.
First, there is an optical audio cable plugged into the back of the
blu-ray player on the cart. It's not easy to see but this just gives you an
idea of where it is.
It goes into the back of the AV cart into this adapter
that converts it from optical to coaxial. This is so it can
be sent a bit of a distance up to the booth. The picture below is a little blurry but
it shows the adapter taped to the inside of the cabinet. It's connected
to the cable we used as the composite video cable from the VCR. It's now used to
send coaxial audio up to the booth.
This is where it goes to up in the booth. Looking at the counter top to your left.
The cable that comes out is marked with red tape.
The other end is plugged into the back of the surround decoder.
*Turn on or make sure these AMPLIFIERS are on. They are labeled:
MAIN OUT F.O.H.
PORTABLE SPEAKERS (REAR SURROUND UP ON CATWALK)
ORCHESTRA CLUSTER (CENTER CHANNEL)
TIER CLUSTER/SUBWOOFER
Do not turn on the STAGE MONITOR amp.
*Turn on the big red power button at the top. This turns on
the equalizer and the Altec Lansing signal delay.