How to select Right Speaker ?

Selecting Right Speaker for my Boardroom is a tough task. There is a tough competition out there in market but we don't want to go for very high end home theater setup but this speaker is going to be used for speech purpose. Are we selecting RIGHT Speaker?

Not only the professionals of AV but every other person should watch this audio visual technology basic gyan.

Also Its helpful for preparation of CTS Exam.

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Speaker