Dating jensen speakers

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Thanks to the Electronics Industry Association (EIA) code conveniently placed on them by the manufacturer, many individual components can be dated to the year and week of production.Due to Hammond and Leslie purchasing components in large quantities, using these codes as definitive signposts will not produce an accurate "born on" date.There are a number of visual cues: anything with a foil CBS ID tag is post 1966, anything with a metal tag is prior to 1966.The typewritten silver foil tags appeared in the mid to late 70's.285642 would be a Rola speaker made in the 42 week of 19x6 (you have to figure out which decade using other information).For additional speaker manufacturer codes, see Ted Weber's listing at Weber Speakers.Some of the entries on the age list show actual known production dates and can be used as markers to guage the quality of other entries around them.Until this work is published, the Age List will continue to function more or less as it has; a quasi-definitive source of this information and a registry of Hammond and Leslie product owners.

Additionally, some organs have been pieced together in order to get one working unit out of many; this will produce inconsistent and unlikely date code ranges.Later Leslie motors have a sticker on them indicating their manufacturing date.The formula is XXX-YYWW, where XXX is the manufacturer EIA code (190 indicates General Instrument in the present example), YY is the last two digits of the year of manufacture, and WW is the week of manufacture.When you hit the "Submit" button you will see a message advising "Update Successful".Your information will be placed in a holding area for review and added to the age list after acceptance.

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