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1961 - 1966 F-100 & Larger F-Series Trucks Discuss the Slick Sixties Ford Truck

Dash speaker size

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Old Mar 19, 2025 | 03:54 PM
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Dash speaker size

I've got to find one of these but the truck is far away I can't measure.
Anybody know what size speaker fits in the 1966 dash?

Thanks!
 
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Old Mar 20, 2025 | 12:34 AM
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Swamp, I don’t know the dimensions. But, Retrosound, who make the reproduction radios for our Slicks, also makes a speaker that fits the hole in the dash. Maybe you can find dimensions on their website?
 
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Old Mar 20, 2025 | 06:42 AM
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Good idea.
I sent them to the shop where the truck is now to validate the dimensions RetroSound shows on their site.
Thanks for the tip!

 
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Old Mar 20, 2025 | 08:29 AM
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Their R-57N is lower profile, by about 7/8". Might fit easier. That's what I put in mine

https://www.crutchfield.com/p_068R57...mnews=14463372
 
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Old Mar 20, 2025 | 10:25 AM
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Originally Posted by 66F250_4x4
Their R-57N is lower profile, by about 7/8". Might fit easier. That's what I put in mine

https://www.crutchfield.com/p_068R57...mnews=14463372
Retrosound’s R-507N & D-572UK are the models designed for our trucks. Not sure what that one fits., may be a universal application

I have the D-572UK in my truck, there were no fitment issues due to profile. It handles the relatively low-powered Retrosound radio fine. My motto used to be “ If it doesn’t fracture your skull and make your ears bleed, it ain’t Rock and Roll”. Nowadays I’m happy at lower volume and fidelity. I have a couple additional speakers behind the seat, and I’m satisfied.

Retrosound did at one time have quality control issues. I got a radio that crapped out in short order, couldn’t return it because I’d sat on it too long prior to installing and finding out it was bad. I waited a couple years, bought another, and it’s been fine for a couple years now. I recommend installing immediately and, if bad, send back while still under warranty.
 
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