View Full Version : were there alot of misslabled 5AR4 to 5V4G.s ?
09-03-2011, 12:51 PM
Just curious if there was a story behind this, if it was intentional, or just a mistake when these were made, as ive seen alot on the net for sale listed that way, i just got a NOS JAN 5AR4 (labled 5v4) from Mike at Kca nos tubes, works great from what i can tell, no problems, just curious as to there being so many from years back that were misslabled, its in my carr slant 6V, is there a way to tell just by looking for the average person to determine if there actualy a 5AR4 insted of a 5v4 when running on to these ? thanks.............:)
09-03-2011, 09:06 PM
09-03-2011, 09:59 PM
Most people wait more than 8 hours before bumping their own thread.
There aren't that many in the grand scheme of things. As far as I know, it was an intentional mislabel, not a mistake (Mike probably knows more). It still happens to yjis day. Some new tubes are being labelled and sold as something they technically aren't.
09-03-2011, 10:46 PM
[QUOTE=SatelliteAmps;11370579]Most people wait more than 8 hours before bumping their own thread. You mean like i just did ?? ive not seen that rule on here ? but even if it is, looks like about 8 hours 15 min.
09-04-2011, 09:10 AM
Not 100% certain of the story behind these, but I suspect that Philips had orders for 5V4s and not for 5AR4s and the 2 types are close enough. The opposite swap wouldn't work though.
You can tell easily by looking at the size of the plates on a Sylvania (original designer of the Philips 5AR4) 5AR4 and any 5V4. The difference is notable. Then there's the performance, the voltage drop in an amp circuit. Added bonus is that I've seen quite a few of these with worn 5AR4 etchings overstamped with 5V4GA printing.
09-05-2011, 08:02 PM
I have examples from 1977 and 1985, so they apparently did it for some time. Both years look exactly the same.
vBulletin® v3.8.5, Copyright ©2000-2013, Jelsoft Enterprises Ltd.