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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. Probably no help, but the stock speakers in my 1970 Twin Reverb are D120Fs, unless the Fs came out the same time in both sizes. Might even get a bit closer on the way the label looks or from the color of the frame, and the F will narrow it a good bit.īut eventually you find out that JBLs records were destroyed in a fire, flood, earthquake, an air raid or some darned thing. You could do that and narrow it down to the approximate year range they built the D series speakers. Report back, Im always trying to learn more about vintage JBLs. With Jensen and pretty much everything else its pretty easy other than the one digit year code thing.īut old JBLs I finally gave up on trying, Google it and youll see why.Īs far as sound you just gotta try um and see if theyre your thing. Anyway to tell the year- Serial numbers.Īlso what can I expect them to sound like What kind of music are they suited for. I have a pair of these I got in an amp I took in trade-They are from the 60s I think and they sounded good and work good.īoth 8ohms. The only other possible source might be the nameplate company (was it Nelson Nameplate) who might still have some records as to serial number batches they made during a period. That was the only record of which serial number was used - and when.
#JBL SERIAL NUMBER LOOKUP SERIAL NUMBERS#
He entered all the serial numbers he had used each day in a small book he kept at his workbench.