Jbl Serial Number
Thank you – great response and much appreciated!
The folks affiliated with the Lansing Heritage website have created a kind of database of JBL serial numbers, with corresponding known dates for the equipment they were found in. You tell them a serial number, they can give a rough guess as to the year of manufacture. AFAIK, serial numbers don't really help and there are no date codes stamped on the speaker like other manufacturers do. Try the site below for lots of JBL information, history, models, etc. There also used to be some specs for vintage JBLs on the Jblpro.com site.
Jbl Serial Number Registry
This Twin does not have a stamp on the tube chart that wouldmatch the pattern you listed. There are two stamps on the tube chart:Production “58” and “PG” stamped near the bottom right.Unfortunately I only have pics of the amp to go on for a few more days. Thepics I have are, however, very high resolution and cover almost all of thespeakers + cab in the back. The speakers and do NOT show an “F”imprinted on the foil label of the speakers. I have the serial numbers on thespeakers and, from what I’ve been able to gather, they look to be from aroundthe same time as the amp (1965). Unfortunately the pics do not really includethe cone (so I can’t see any stamp on the cone).
The frames are gray with yellow JBL on the driver. Serials are 117xxand 120xx (where “xx” is a number). They say “signature speaker”across the top (but not “Jim Lansing signature speaker” like the ‘61sapparently).
And I’m with you on the “ears” bit – I won’thesitate swapping these out if they aren’t what I want. I’ll justcarefully pack them up and, if I ever sell it, they’ll go with it andmake it a premium cost J I have a pair of Tone Tubbies in my 73 Twin that are amazing –maybe they’ll be great in a ’65 too. I hope to find out!
I appreciate your time on this, Kevin – thank you for anyinsights!
Scott
Thank you!
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