LSR4300 Control Center Software Version: 2.5 Release Date: AUGUST 1 2009 LSR4300 Control Center Software is designed to control JBL LSR4300 Series Studio Monitors. This version offers compatibility with Macintosh OS 10.5 Leopard.as well as backwards compatibility with Macintosh OS 10.4 Tiger System Requirements: Hard Drive: 100 MB Space Available RAM: 128 MB Minimum Macintosh (R) Operating System: OSX version 10.4 or later CPU: 333 mHz Intstallation Notes: If LSR4300 Control Center Software was previously installed on this computer, delete the JBL Preference Folder before proceeding with installation of version 2.5 . To find the JBL folder double click the icon for the drive on which the Macintosh operation system is installed. Click on the LIBRARY folder. Click on PREFERENCES folder. Locate and delete the JBL folder. To install LSR4300 Control Center Software on a Macintosh Computer, copy the file to your local hard drive. Double click on the file LSR4300 Control Center to start the installation process. Notes: If no Studio Monitors are connected to your computer, the application will launch in the Demo Mode, allowing you to explore software features and learn about LSR4300 capabilities. For more information read the LSR4300 Control Center Users Guide. For technical support in the USA, contact JBL Customer Service Monday through Friday, 8:00am - 5:00pm Pacific Coast Time Call (800) 8JBLPRO (800-852-5776) or go to our website at www.jblproservice.com