Leslie speaker dating
They came in two colors: silver (pre-1963) and black (1963 and later.) Black transformers have a four digit date stamped into the bell housing. To get an idea of the production date for a silver AO-28 look at the can capacitor's date code (235-xxxx).
The tonewheelgeneral site can be used to give age info, but i'm also puzzled in leslie numbering, some of mine begin FB some FA, and some just numbers, dont know what the difference is, but would also like to know. After checking my speakers have noticed the FA models have unfinished backs and FB have finished backs, also the vents finish seems slightly different between FA/FB models, so do wonder if made in different countrys, hence finished/unfinished backs.
The sound generator is electrically similar to Solovox Model L.
It consists of a vacuum tube oscillator and five frequency divider circuits, controlled by a volume and 8-stop tablets (Bourdon 32', Bombarde 32', 16', 8', 4', 2' & 1', mute, pedal solo on) placed on the right side of lower manual.
Transistor spinet organ with drawbars, in some extent, corresponded to a kind of successor of L-100 series tonewheel spinet organ, although its new drawbars arrangement is slightly exotic; its upper manual has normal nine drawbars; on the other hand, lower manual has only two 8' drawbars with sawtooth.
This anomalous design was only followed by a few models (8000 series, 8100 series, and 8200 Aurora series).
There is some help available however: The Hammond/Leslie age determination list was initially compiled by .
It is basically a list of dates and serial numbers for various Hammond and Leslie models.
Many of the components found in Hammonds and Leslies (like speakers, tubes and capacitors, for example) have numeric codes stamped on them which indicate the manufacturer and/or the date of manufacture of the device.
Monophonic attachment keyboard instrument, intended to accompany the pianos with lead voice of organ and orchestral sound.
It consists of two units — a 3-octave mini keyboard attaching under the piano keyboard, and a tone cabinet including electronic sound generator, amplifier and loudspeaker.
Solo Pedal Unit (or Pedal Solo Unit) provides a monophonic bright bass sound on RT series and model D-100 consoles, layered with tradiotional polyphonic tonewheel pedal sound.
Although Solo Pedal Unit is highest-note priority and it can play only one note at a time, the players can play polyphonic bass lines by the help of traditional pedal sound.
At this point in history, many amps, woofers, horns, and motors have gotten swapped from one cabinet to another.