This new old stock-testing Sylvania-made JAN 6W6WGB matched pair output tubes was tested on our Maxi Matcher 2 for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured:
Tube One: 40.9 milliamps / 2910 micromhos (Sylvania-made 5881 yet unbranded; 5881 etched on glass)
Tube Two: 39.4 / 3000 (Sylvania-made JAN 6L6WGB PhilipsECG-branding stenciled on base with codes 34167 8613 AHM; 6L6WGB etched on glass)
Tubes tested with 400 volts on the plates and a bias of -48 volts. New old stock US-made 6L6s typically test with plate current from the mid-teens to
mid 30s with transconductance from around 2200 micromhos.
Tubes have gray plates, a side halo getter, and they are tight on bases with no debris or rattling sounds. Closely matched electrically. Sound tested in our Musical Paradise shop amp (see pics). A previous owner has done a wonderful job gluing on the guide pin to Tube Two (wish I knew which glue they used).
Tubes ships via United States Postal Service (USPS) First Class Mail with tracking for domestic U.S. sale; Priority Mail is an option if you desire quicker
delivery. International orders ship via International Shipping.
Package weighs twelve ounces (12 oz).
View my store for other varieties of tubes.
Combined shipping always welcomed.
TUBES ARE GUARANTEED GOOD AND IN WORKING ORDER AT SHIPMENT. TRANSIT VIA POST CAN DAMAGE TUBES. THIS IS NO FAULT OF OURS BUT THE THIRD PARTY ENTITY THAT IS DELIVERING ITEM(S) TO YOU, I.E, USPS, UPS, FEDEX, YOUR NATIONAL CARRIER IF INTERNATIONAL, ETC. PLEASE INSURE THEM! WE CANNOT GUARANTEE FAILURES ON YOUR EQUIPMENT AFTER POWER UP AS THERE IS NO WAY TO ASCERTAIN HOW TUBES WILL INTERACT WITH YOUR ELECTRONICS; NOR IS THERE A WAY TO DETERMINE WHETHER THEY MAY HAVE FATAL FLAWS IN TUBES THEMSELVES! THESE ARE USED VACUUM TUBES AND TIME MAY HAVE TAKEN A TOLL ON THEM OVER THE MANY YEARS SINCE THEY WERE MANUFACTURED. WE CAN ONLY TEST FOR THE PARAMETERS MENTIONED ABOVE IN ONE OR MORE OF THE FOLLOWING EQUIPMENT WE USE FOR MEASURING: TV-7/U, JACKSON 648 & MAXI MATCHER 2.