Version	Language	Size	Uploaded
Tech Notes
Tech Note: JBL Professional Studio Monitors for Multichannel Sound Applications updated: 10月 2020			86.2 KB	10月 2020
Tech Note: Polarity Conventions updated: 10月 2019			55.0 KB	10月 2019
Tech Note: The Evolution of JBL’s Large Format Monitor Loudspeaker updated: 10月 2019			123.4 KB	10月 2019
Owner's Manuals
4425 Information updated: 10月 2020			695.8 KB	10月 2020
Information documents
JBL Professional Model Number Listing: updated: 10月 2020			47.3 KB	10月 2020

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