Selection & Application: Part 4

Site: QSC
Course: Cinema 101 Training
Book: Selection & Application: Part 4
Printed by: Guest user
Date: Saturday, 13 April 2024, 2:49 AM

Description

Video Transcript

00:08
We're back! Let's start back up again.
00:11
Now let’s dive a little bit deeper into each one of these scenarios using some System Design Examples, starting with ATMOS.
00:18
For Immersive systems like Dolby Atmos, we always recommend a Q-SYS approach which includes a Core processor and CX-Q Series network amplifiers.
00:28
Q-SYS allows for easy network audio connection direct from the Atmos processor and offers full remote control and monitoring capabilities.
00:37
Our Core Nano and Core 8 Flex processors have plenty of capacity for small to medium sized Atmos systems
00:43
while for very large Atmos systems (with larger channel counts), we recommend the Core 110f or Core 510 processors.
00:52
Here’s a system design for a Medium-sized Atmos room.
00:56
Notice that each surround requires its own dedicated amplifier channel
01:00
and that we wire the surrounds in “arches” that span from the Left wall, across the ceiling, to the Right wall.
01:07
This makes it easier to keep track of which channel is feeding a particular loudspeaker.
01:12
Immersive systems like Atmos can be fairly complicated, and if you have any doubts,
01:17
this is another situation where we would strongly recommend that you contact a QSC Application Engineer for some design assistance.
01:25
Now let’s take the same room, still using the Q-SYS Ecosystem for maximum efficiency, simplicity, and minimal cost.
01:33
But rather than for an ATMOS room, this will be an Advanced 7.1 system.
01:38
Since we’re using Q-SYS, we’ll still use CX-Q Series 8-channel network amplifiers.
01:44
First we’ll connect a DCIO, a Core processor, and our network amplifiers to our network switch.
01:51
Then we’ll connect this first 8-channel amplifier to the Left and Right bi-amplified screen channels, subwoofer 1, and the Left and Right rear wall surrounds.
02:01
Then we’ll connect the second 8-channel amplifier to the Center bi-amplified screen channel, subwoofer 2, and the Left and Right Side Wall surrounds.
02:10
And that’s it! All using just two amplifiers.
02:13
Now let’s explore a more conventional approach for a Basic 7.1 Sound System for a MEDIUM sized room, let’s say… 65 feet and about 300 seats.
02:24
We’re not using Q-SYS in this example so we’ll use our DPM 300 processor with DataPort enabled DCA amplifiers.
02:33
The DPM provides a cinema processor, booth monitor, DSP, crossovers, and connections for HI, VI, and non-sync, all in a single, easy to install package.
02:45
And DataPort wiring speeds installation with DCA amps – you just connect one cable for each two channels of audio
02:52
and get a host of additional processing features including our Intrinsic Correction DSP Presets for QSC loudspeakers.
03:00
And using the free DPM Director App, you can add Remote control and monitoring capabilities.
03:07
Here’s the system design using the DPM 300 with bi-amplified screen channels and FOUR DCA Series amplifiers.
03:15
With the Left and Right screen channel loudspeakers in bi-amp mode we’ll use two channels for each on the first 4-channel DCA 1644.
03:24
The Center channel loudspeaker, and the front Side Surround zones will use the second DCA 1644.
03:30
We put the Center Screen channel on a separate amplifier so in the unlikely event that one amplifier might fail, the audience will still hear sound from behind the screen.
03:40
A pair of SB 7218 subs are powered by one DCA 3422, two channel amp, with one sub per channel.
03:49
Then we’ll put the second group of Left and Right Surrounds, and Left Back Wall and Right Back Wall surrounds on individual channels of the DCA 1824.
04:00
This system can be used with the DPM 300 processor- or with the DCM,
04:06
if you’re using a non-QSC brand processor and just need the crossovers and booth monitor functions.
04:12
The last System Design Example we’ll look at for now is for small, Critical Listening applications.
04:18
For these, our Reference Monitor System is hands-down the best choice.
04:23
The Reference Monitor System is unique in that it’s designed as a Q-SYS based system but uses our DCA Series amplifiers.
04:31
Each Screen Channel loudspeaker has its own dedicated subwoofer, the RSB-212.
04:37
And as we mentioned earlier, all processing is handled by a Core 510 with Dataport I/O cards that are connected to the DCA amplifiers.
04:46
Here’s what a typical system design using the Reference Monitor System looks like.
04:51
Note that each Left, Center, and Right screen channel loudspeaker system plus subwoofer is driven by a pair of DCA amplifiers.
05:01
In this diagram, the RSC-112 and RSB-212 are shown with the optional baffle wing kit.
05:08
As another option for rooms of this size and even slightly larger, the SC 414 four-way screen channel loudspeaker
05:16
is a Premium class screen channel system that produces excellent results in quad amp mode.
05:22
We can use a single 4-channel DCA amplifier to quad-amplify each screen channel loudspeaker.
05:29
Unlike the Reference Monitor System, this design will require a standalone subwoofer,
05:34
and one 2-channel DCA amplifier in bridged mode should provide ample power for a single SB-7218.
05:43
As with the RMS example, all eight surrounds can be powered by a single 4-channel DCA amplifier.
05:50
We get a variety of questions at QSC around wiring amplifiers and loudspeakers. It’s understandable.
05:57
Two-way, 3-way, bi-, tri-, quad-amp,… Which amplifier model should I use? There are so many options, it can be confusing.
06:04
Well, fear not, we’ve added some handy Application Guidelines, in the Links & downloads section for this course. Might be worth a look.
06:14
Alright! You wrapped up another one. And if you’re still unsure on which cinema products are right for your application, contact your QSC representative for more help.
06:24
Thanks for watching!

Lesson Description

Dive deeper into the application process using system design examples.