JBL SDEC-4000 - Manual (Page 5)

- 5 - SDEC -X000 DACS Calibration Manual v1.0.doc
3 Calibration Checklist
The calibration process is more than just measuring and applying EQ to achieve a preset target. It includes examining the entire signal
chain and confirming that all parts of the system are accurately connected. Use the below checklist to make sure you have completed
all the steps to ensure that your system meets the standards for the best audio system possible.
Follow this list in the order below and you will be guaranteed a great
sounding and properly calibrated JBL Synthesis installation.
Speaker placement and installation is correct
(page 16 - Speaker Sound Check)
Correct connection from Preamp to EQ to Amplifier to Speakers
(page 6 -
Audio Connections)
Connection of SDEC to Ethernet Network
(page 8 - Ethernet Connection)
Phase test of each speaker
(page 16 - Speaker Phase Test)
Set all preamp bass, treble, and speaker distances to flat or 0
All bass management crossover points should be set to 80Hz. Do not use
80Hz THX
®
(See the SDP processor installation manual)
Measure and input speaker offset correction
(page 9 for Java Remote -
Distance/Delay settings or page 14 for London Architect - Channel Delay (Speaker Distance Offset
Correction)
Use internal noise test and adjust SDP output levels to set nominal
reference level of 75dB using SPL meter before beginning room
correction EQ
(page 18 - Setting Levels before Calibrating)
Set Processor to Dolby ProLogic and set volume to 0dB
Run room measurement using the DACS system and enter corrective EQ
settings
(page 19 - DACS Measurement System)
Set final levels for system using SPL meter to balance overall output for
each speaker using gain adjustment in SDEC
(page 15 - Level Matching Multiple
Surround and Subwoofer Channels)
Use test DVD to confirm results using the subjective listening tests
Save the SDEC settings file for backup to both your computer and the
network device (SDEC) for future recall
(page 20 - Saving Your Work London
Architect software only)