Version	Language	Size	Uploaded
Data Sheets
4890A Spec Sheet updated: 10月 2019			217KB	10月 2019
Tech Notes
Tech Note: Polarity Conventions updated: 10月 2019			55KB	10月 2019
Owner's Manuals
4890A Information updated: 10月 2020			48.1KB	10月 2020
Speaker Tunings
Array 4890, 4891 and 4892 Tunings updated: 10月 2020			12.9KB	10月 2020

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