The factory installed speakers in a 2000 Chevrolet Blazer are 6-¾ inch in the front doors and 6-¾ inch in the rear doors.The front stage also includes a set of 1 inch tweeters that are mounted in the A pillars. To replace the stock speakers You will need to remove the door panels to be able to access them. The 6-¾ size is very common in stock systems but most aftermarket manufacturers only produce 6.5 inch woofers, so You will need to find a stock replacement or use an adapter that allows You to mount the smaller diameter speaker in the larger factory hole. The adapters are easy to use and do not cost much so that is the method most people choose when upgrading.
Jesse A.
April 9, 2020
The size of the speakers in a 2000 chevy blazer 2 ohm 4x6" for the corner dash, 2 ohm 6-3/4" for the front door and 6-1/2" for the rear door.
David
May 10, 2021
The rear doors are 5.25", the fronts are 6.5, the dash is a 4x6"
David
February 12, 2022
In a 2000 Blazer LS, dash speakers are 4x6, doors are 6.5, and behind the seats on the sides are 6x9’s.
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