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The remnants of the old Empire Tube - they were a rebuilder absorbed by VDC sometime after the mid-80's. I have the Empire/Video Display Corp CRT substitution guide from the early 90's, with both companies prominently listed together. Empire CRTs weren't great - we used to see them fail after just a year or so, and they were sold with a one-year Empire warranty. Their 23VAL/VAT (a 25AP22 universal sub) was a strong performer - I saw only one ever come back at the distributor I worked for - and that was for phosphor flaws. But their 25V series tubes were the weak ones that failed early. Ironically, I once had an 11SP22 in an Empire box - I used the box to ship an Altec amp in 2002, and still have the 11SP22 as a spare for my two Portacolors.
Cheers,
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Brian
USN RET 22YRS (Avionics/Cal)
CET-Consumer Repair and Avionics ('88)
"Capacitor Cosmetologist since '79"
When fuses go to work, they quit!
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