13 Advanced Features

13.1 Cinema/Music Subwoofer Output

The SDEC has the ability to change the subwoofer output gain to accommodate both the standard cinema curve and a more linear music output level. This feature has been built into the SDEC as a simple alternative to the multiple EQ presets that would otherwise be necessary as described in Section 13.2 Multiple EQ Presets. Changing the output level of the subwoofer using this preset will not have an effect on your standard calibration. The default setting is Cinema with no change to the output level. The preset can be triggered in three ways: (1) via RS232; (2) via Ethernet; (3) via the contact closure trigger on the rear panel.

Note: You must have SDEC3000/SDEC4000 version 1.10 or higher for this feature.

13.1.1RS232 Settings

Cable Type:

Null Modem

DB9 Female – PC

 

DB9 Female – SDEC

TX PIN 3

 

RX PIN 3

RX PIN 2

 

TX PIN 2

GROUND PIN 5

 

GROUND PIN 5

Serial Port Settings:

8 Bit

 

No Parity

 

115200 bps

 

No Flow Control

Command acknowledgment will be sent within 1 second from when the command was sent. If no ACK is received then the command should be resent.

13.1.2Ethernet Settings

Cable Type:

Standard Ethernet network

Ethernet Port Settings:

TCP PORT 1023

13.1.3Command Strings

The command strings are the same for both RS232 and Ethernet protocols.

Model

Command String

 

Cinema Level – 0dB Default level

 

02, 88, 50, 79, 1B, 83, 00, 01, 14, 00, 00, 00,

SDEC-3000

00, 00, 00, B7, 03

Music Level – 2.5dB

 

 

02, 88, 50, 79, 1B, 83, 00, 01, 14, 00, 00, FF,

 

FF, 9E, 58, 71, 03

 

Cinema Level – 0dB Default level

 

02, 88, 13, 86, 1B, 83, 01, 01, 30, 00, 00, 00,

SDEC-4000

00, 00, 00, 2E, 03

Music Level – 2.5dB

 

 

02, 88, 13, 86, 1B, 83, 01, 01, 30, 00, 00, FF,

 

FF, 9E, 58, E8, 03

13.1.4Contact Closure Trigger

Using the rear panel connections labeled “Control Inputs” connect a contact closure between input (top row) #4 and the connection labeled “C” (for common). When the contact is

normally open the default setting of 0dB will be active. When the contact is closed the -2.5dB setting will be triggered.

13.2 Multiple EQ Presets

Up to two EQ presets can be stored and recalled. All channels can be changed and are saved and recalled together. Due to the advanced nature of this process it should only be done under the supervision of JBL Synthesis factory personnel.

13.2.1Saving Presets

Please contact JBL Synthesis Technical support for this feature. It requires advanced training and the use of London Architect. It cannot be used with the Java Remote. As this feature is considered an advanced feature there is the possibility of loosing your work if you do not have the proper training. Due to this possibility JBL Synthesis is not releasing the information except to qualified personnel who have undergone advanced training with JBL Synthesis personnel.

13.2.2Recalling Presets

Presets can be recalled using several methods. The presets can be triggered via RS232, Ethernet or while online with London Architect. Due to the danger of accidentally erasing or deleting your active EQ settings JBL Synthesis is not releasing the information except to qualified personnel who have undergone advanced training with JBL Synthesis personnel.

13.3 Parameter Synchronization

Note: This procedure can only be done if changes are made to the Design File preferences. This will allow you to take saved settings and place them into a new unit. The only reason to do this is if the old unit is defective and needs to be replaced. Do not do this unless directed by JBL Synthesis Personnel.

If both the hardware and the software have the same version of the control and design configuration then the software will check to see of the settings and parameters match. If they do not match you will be given the option to synchronize the settings. You will be prompted to tell the software whether you want to use the settings from your computer, or load the settings from the hardware. If you are starting a new calibration or want to replace what is set in the EQ with your settings from the computer, select update from software. If you have already begun the process and want to continue your work, or use the settings in the EQ as a starting point, then select update from hardware. Select the green arrow to send your values from your saved file or select the red arrow to receive the values from the hardware. The unit name will highlight in green when done. Click OK to continue.

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SDEC -X000 DACS Calibration Manual v1.0.doc

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JBL SDEC-4000, SDEC-3000 Advanced Features, Cinema/Music Subwoofer Output, Multiple EQ Presets, Parameter Synchronization

SDEC-4000, SDEC-3000 specifications

The JBL SDEC-4000 is an advanced digital signal processor designed for professional audio applications, offering a range of features tailored for optimizing sound quality in both live and installation settings. This powerful device is equipped with cutting-edge technologies that elevate the audio experience through precise control and manipulation of audio signals.

One of the standout features of the SDEC-4000 is its high-performance 32-bit DSP engine, which allows for complex audio processing tasks to be executed seamlessly. This means sound engineers can utilize precise adjustments without any degradation in audio quality. The processor supports various crossover types, making it versatile for different speaker configurations and ensuring proper frequency distribution across audio systems.

The SDEC-4000 comes with comprehensive networking capabilities, supporting both Ethernet and USB connections. This enables easy integration into larger systems while allowing for remote control and monitoring via a user-friendly interface. The device also supports various audio protocols, including AES/EBU and analog inputs, providing flexibility for connecting with multiple sources.

A vital aspect of the SDEC-4000 is its extensive array of built-in algorithms for equalization, compression, limiting, and delay. These tools empower sound engineers to tailor the audio output precisely to their requirements, whether it’s for a concert, a theater production, or a permanent audio installation. With up to 20 channels of processing, users have the freedom to fine-tune each element of their sound system individually.

In addition, the SDEC-4000 features a robust and intuitive graphical user interface that simplifies programming and adjustments. Users can visually represent their audio setups, making it easier to manage complex configurations. The processor also includes comprehensive diagnostic tools, ensuring that any issues can be quickly identified and resolved, thereby maintaining optimal performance.

Furthermore, the device is built with durability in mind. Its rugged construction ensures reliability even in demanding environments, making it a trustworthy choice for both touring applications and fixed installations. The JBL SDEC-4000 is not just a technical marvel, but a comprehensive solution designed to meet the diverse needs of audio professionals, setting a new standard in digital signal processing technology.