Electro Voice Sentry 500 monitor driver identification please

Hello all

Hope you’re all enjoying good music.

I recently purchased a pair of vintage Electro Voice Sentry 500 monitors.

They’ve been given to a local speaker repair technician (Brisbane, Australia) who advised the woofers were not original.
He said the woofers fitted are likely from a modern EV public address system.

Would a member kindly advise me of the correct woofer and tweeter part numbers for the 500’s please.

I have searched online and I’m unable to determine the above driver details.

I’m much obliged for your kind assistance.

Mark.
 
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original drivers should look like these with inverted roll cloth surrounds (there's a glut of these with all sorts of replacement bass drivers with foam surrounds which are definitely not original) also look for 1802 8838 XXX stamped on the back, the remaining three digits are date codes(?)
i once bought a used pair of Sentry 3's stuffed with SP12's, that was a bonus find i was able to cover the purchase of replacement drivers (used originals) and made a tidy profit selling the SP12's raw...now i wish i'd kept them!
 
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