I am going to have to be inside the passenger door on this 1975 F350 that was broken into to replace the wing window. Thought I might install a speaker while I am in there. I doubt I will have time to get into it before I am in town the next time. I have searched here on the forum but so far have missed where an one has said what size the speakers were. Could someone help me out please? Truck as an AM only radio so probably will get updated once I have it back up and running. Thanks Dennis

 

I believe it is 6 or 6.5" round.

 

Like Keith said, its 6.5". I just bought a set of 6.75" Kickers and they fit pretty good.

Joe

 

3x... +/-6.5 inches depending on how the speakers' flange is designed. The speakers should come with baffles to shield it from water... use 'em!

Better yet, totally enclosed baffles are available in the aftermarket.

 

Crap, I didn't shield mine.

Is there any way to ensure water stays out? I used plenty of sealant around the anti-rattlers...

 

the stereo shop i worked for used to just put small pieces of convertible top fabric over the top of the speakers

 

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