Hello this is my first post. I have Polk R150 speakers all of a sudden one of the speaker is not identifying by Avr 645. I called customer support and they asked me to remove Driver and Tweeter and send to service center.
I saw 4 screws for Driver and 2 screws for Tweeter. I am trying to figure out what tool exactly helps to remove both.
I really appreciate for your help.

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