The Hammond organ is an electric organ, invented by Laurens Hammond and John M. Hanert[1] and first manufactured in 1935.[2] Various models were produced, which originally used tonewheels to generate sound via additive synthesis, where component waveform ratios are mixed by sliding switches called drawbars and imitate the pipe organ's registers. Around 2 million Hammond organs have been manufactured, and it has been described as one of the most successful organs ever.[3] The organ is commonly used with, and associated with, the Leslie Speaker.
Old Hammond Organ Models By Serial Number
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About this guideThis is a quick guide to Leslie speaker models suited for Hammond organs. This document is meant as a reference for when you are browsing the classifieds or eBay and is not meant to list every little detail about the speakers. Some models are covered elsewhere on this website, often in detail and with pictures. About the backgroundThe background is Leslie finish 'Oak No 20'.
About the roto-sonicsSince most players and technicians, including myself, find the roto-sonic Leslie models less valuable, these are listed in a separate section. Some of these speaker models may be used as is, or they can be converted into more Hammond friendly models or simply serve as parts donors for other more valuable Leslie models. Electro Music tended to use the same parts in as many applications as possible, so a good many parts from, say, a model 710 may be used to restore a model 122. If you happen to prefer the more theatre organ-like sound of the roto-sonic Leslie speaker, by all means - you are just lucky to like the more inexpensive alternative.
About the speakers still in production by Hammond-SuzukiModels 122, 147 and 770 are still in production as model 122A/122XB, 147A and 771/971 respectively. They are updated in the technical design, but the basic functionality is the same as the vintage speakers. For a while model 145 and 142 were being produced as 145A and 142A. A vintage speaker in immaculate condition may fetch a higher price than a new Leslie, especially for the tube models. If you are a church or a professional business, consider investing in a new Leslie from a local dealer that will support you. Old cabinets often don't come with a warranty or a service organisation, and Mr. from three towns over will most likely not help you with a replacement Leslie for Sunday service, because the 1971 Leslie he sold you broke down at band practice Saturday afternoon. If you are looking for a dealer of new Leslie speakers, a few of them are listed in the links section of this website.
Most Hammond organs do not have a full, 32-note American Guild of Organists pedalboard going up to a G (3rd leger line of the bass clef) as the top note. Instead, to reduce the cost of the instrument, or the size of the bass pedalboard, 25-note (with a C on the 1st leger line of the bass clef as the top note) or 30-note (with an F on the 2nd leger line of the bass clef as the top note) bass pedalboards are often used. Several Hammond 'concert' models, the RT-2, RT-3 and D-100 had 32-note AGO pedalboards, in addition to a 'Solo Pedal Unit' which provided several 32', 16', 8', 4' voices on the pedal. The solo pedal unit used oscillators, similar to those used in Hammond's 'Solovox'.
The model B-3 was, and still is, the most sought-after model, though the C-3 differs only in cosmetics. Hammonds can be divided into two main groups: the 'Console' models such as the B-3, C-3 or A-100 which have two 61 note manuals and the smaller 'Spinet' models that have two 44 note manuals such as the M-3, L-100 and the M-100. Hammonds' serial numbers are not sequential from one production lot to the next, which can make it difficult to determine the date of manufacture of a Hammond organ.
Not all Hammonds used tonewheels and drawbars; the Hammond company produced a number of cheaper organs which used a simpler electronic way of producing sound, such as the model J100, but these instruments do not have the distinctive Hammond sound. By 1975, synthesizer technology had reached the point where the unique Hammond sound could be fairly closely simulated electronically. However, accurate imitation of the Hammond sound with simple electronic circuitry was difficult, because the subtly-changing phase relationships between tonewheels could not be easily replicated.
Do you have a Hammond that does not appear in this database yet?Please, mail me its serial and model number and I will add it. Thanks! Guy.(Also if you want to have your name removed as owner of a certain machine).
The Leslie 147A is specifically designed for use with vintage Hammond Organs with built-in speaker systems such as the A-100 series organs and spinet models such as the M, M2, M-100, and L-100 series instruments. Learn more...
For decades, guitarists of all genres have experimented with the Leslie speaker, adapting various models intended for use with an organ for use with a guitar. The Leslie G37 finally meets that market demand with a highly portable dual rotor Leslie speaker system designed specifically for the guitar. Learn more...
The Cable-Nelson Piano Company began operating in Chicago in 1903as the Fayette S. Cable Company. Nelson joined the firm in 1905 and thecompany changed its name to Cable-Nelson Piano. The pianos' serial numbersbegan at 26000 and ran up from there.
Earlier, in the 1940s, Everett manufactured the Everett Orgatron,which later became a part of the Wurlitzer Piano, with its tone derivedby amplifying wind blown reeds. Nevertheless, both labels were notwell-received by consumers and production eventually ceased.Everett was later acquired by Yamaha Corporationafter which production of Everett and Cable-Nelson pianos were put to ahalt. In 2007, Yamaha decided to resume the production of Cable-Nelsonpianos, which were manufactured mainly in China. The lastAmerican-manufactured Cable-Nelson piano ended with serial number 427000in 1981. 2ff7e9595c
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