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84-581: Like the later Hammond organ , the Telharmonium used tonewheels to generate musical sounds as electrical signals by additive synthesis . It is considered to be the first electromechanical musical instrument. In 1890's, Thaddeus Cahill was a lawyer living in Washington DC who invented devices for Pianos and Typewriters. The final design, patented in 1897, had twelve separate alternating-current generators , to generate electric waves, to produce

168-422: A balanced mono signal and AC power directly from the organ via a six-pin cable. Spinet organs contained their own built-in amplifier and speakers. The tone cabinet was originally the only method of adding reverberation to a Hammond organ. The first models to be produced were the 20-watt A-20 and 40-watt A-40. The A-20 was designed for churches and small-capacity halls, and featured a set of doors in front of

252-614: A piano . It quickly became popular with professional jazz musicians in organ trios —small groups centered on the Hammond organ. Jazz club owners found that organ trios were cheaper than hiring a big band . Jimmy Smith 's use of the Hammond B-3, with its additional harmonic percussion feature, inspired a generation of organ players , and its use became more widespread in the 1960s and 1970s in genres such as rhythm and blues , rock (especially progressive rock ), and reggae . In

336-466: A $ 75,000 Skinner pipe organ in the University of Chicago 's Rockefeller Chapel . During the auditory tests, sustained tones and excerpts from musical works were played on the electric and pipe organs while a group of musicians and laymen attempted to distinguish between the instruments. While attorneys for Hammond argued that the test listeners were wrong or guessed nearly half the time, witnesses for

420-557: A 12-note pedalboard. The M model was produced from 1948 to 1951, the M-2 from 1951 to 1955, and the M-3 from 1955 to 1964. The M series was replaced by the M-100 series in 1961, which used a numbering system to identify the body style and finish as used on earlier console series. It included the same manuals as the M, but increased the pedalboard size to 13 notes, stretching a full octave, and included

504-416: A Hammond organ comes from a tonewheel. Each one rotates in front of an electromagnetic pickup. The variation in the magnetic field induces a small alternating current at a particular frequency, which represents a signal similar to a sine wave . When a key is pressed on the organ, it completes a circuit of nine electrical switches, which are linked to the drawbars. The position of the drawbars, combined with

588-430: A Hammond's tuning is concert A at 440 Hz . Crosstalk or "leakage" occurs when the instrument's magnetic pickups receive the signal from rotating metal tonewheels other than those selected by the organist. Hammond considered crosstalk a defect that required correcting, and in 1963 introduced a new level of resistor–capacitor filtering to greatly reduce this crosstalk, along with 50–60 Hz mains hum . However,

672-605: A Leslie speaker. Hammond designed it as the company's flagship product, in response to market competition and to replace the B-3. However, it was considered expensive at $ 9,795 and it sold poorly. It did not sound like a B-3. Hammond introduced their first integrated circuit (IC) model, the Concorde, in 1971. The company had stopped manufacturing tonewheel organs entirely by 1975, due to increased financial inefficiency, and switched to making IC models full-time. Console models included

756-463: A cheaper design, was not as sophisticated as on the other organs. The L-100 sold particularly well in the UK, with several notable British musicians using it instead of a B-3 or C-3. The T series, produced from 1968 to 1975, was the last of the tonewheel spinet organs. Unlike all the earlier Hammond organs, which used vacuum tubes for preamplification, amplification, percussion and chorus-vibrato control,

840-407: A church organ. Modern Hammond-Suzuki models use waterfall keys. Hammond console organs come with a wooden pedalboard played with the feet, for bass notes. Most console Hammond pedalboards have 25 notes, with the bottom note a low C and the top note a middle C two octaves higher. Hammond used a 25-note pedalboard because he found that on traditional 32-note pedalboards used in church pipe organs,

924-455: A console half-moon or pedal switch, with the most distinctive effect occurring as the speaker rotation speed changes. The most popular Leslies were the 122, which accepted a balanced signal suitable for console organs, and the 147, which accepted an unbalanced signal and could be used for spinet organs with a suitable adapter. The Pro-Line series of Leslies which were made to be portable for gigging bands using solid-state amps were popular during

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1008-492: A digital tonewheel simulator. The New B-3 is constructed to appear like the original B-3, and the designers attempted to retain the subtle nuances of the familiar B-3 sound. Hammond-Suzuki promotional material states that it would be difficult for even an experienced B-3 player to distinguish between the old and new B-3 organs. A review of the New B-3 by Hugh Robjohns called it "a true replica of an original B-3 ... in terms of

1092-414: A good response from bass pedals. Many players prefer to play the Hammond through a cabinet with a rotating speaker known, after several name changes, as a Leslie speaker , after its inventor Donald J. Leslie . The typical Leslie system is an integrated speaker/amplifier combination in which sound is emitted by a rotating horn over a stationary treble compression driver , and a rotating baffle beneath

1176-420: A high-quality electrical connection when pressing a key. This design was discontinued with the introduction of the transistor organ. This means tonewheel organs have between 3.2 and 8.4 grams of palladium, depending on make and model. The sound on a tonewheel Hammond organ is varied through the manipulation of drawbars. A drawbar is a metal slider that controls the volume of a particular sound component, in

1260-453: A key on a Hammond results in the sound continuously playing until it is released, whereas with a piano, the note's volume decays. No difference in volume occurs regardless of how heavily or lightly the key is pressed (unlike with a piano), so overall volume is controlled by a pedal (also known as a "swell" or "expression" pedal). The keys on each manual have a lightweight action , which allows players to perform rapid passages more easily than on

1344-528: A metal tonewheel near an electromagnetic pickup , and then strengthening the signal with an amplifier to drive a speaker cabinet . The organ is commonly used with the Leslie speaker . Around two million Hammond organs have been manufactured. The organ was originally marketed by the Hammond Organ Company to churches as a lower-cost alternative to the wind-driven pipe organ , or instead of

1428-419: A note is being played, and a chorus effect where a note's sound is combined with another sound at a slightly different and varying pitch. The best known vibrato and chorus system consists of six settings, V1, V2, V3, C1, C2 and C3 (i.e., three each of vibrato and chorus), which can be selected via a rotary switch. Vibrato / chorus can be selected for each manual independently. The B-3 and C-3 models introduced

1512-400: A number of presets. The L-100 series entered production at the same time as the M-100. It was an economy version, with various cost-cutting changes so the organ could retail for under $ 1,000. The vibrato was a simpler circuit than on other consoles and spinets. Two variations of the vibrato were provided, plus a chorus that mixed various vibrato signals together. The expression pedal, based on

1596-538: A number of reasons. The instrument was immense in size and weight. This being an age before vacuum tubes had been invented, it required large electric dynamos which consumed great amounts of power in order to generate sufficiently strong audio signals. In addition, problems began to arise when telephone broadcasts of Telharmonium music were subject to crosstalk and unsuspecting telephone users would be interrupted by strange electronic music. By 1912, interest in this revolutionary instrument had changed, and Cahill's company

1680-424: A number of ways. For instance, its sound output came in the form of connecting ordinary telephone receivers to large paper cones—a primitive form of loudspeaker . Cahill stated that electromagnetic diaphragms were the most preferable means of outputting its distinctive sound. There are no known recordings of its music. The Telharmonium was retailed by Cahill for $ 200,000. The Telharmonium's demise came for

1764-468: A pedalboard with only 25 notes, instead of the standard 32 on church organs, and it quickly became a de facto standard. On April 24, 1934, Hammond filed a patent for an "electrical musical instrument", which was personally delivered to the patent office by Hanert, explaining that they could start production immediately and it would be good for local employment in Chicago. The invention was unveiled to

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1848-517: A piano. In contrast to piano and pipe organ keys, Hammond keys have a flat-front profile, commonly referred to as "waterfall" style. Early Hammond console models had sharp edges, but starting with the B-2, these were rounded, as they were cheaper to manufacture. The M series of spinets also had waterfall keys (which has subsequently made them ideal for spares on B-3s and C-3s ), but later spinet models had "diving board" style keys which resembled those found on

1932-444: A recreation of the original B-3 organ using digital technology. Hammond-Suzuki continues to manufacture a variety of organs for both professional players and churches. Companies such as Korg , Roland , and Clavia have achieved success in providing more lightweight and portable emulations of the original tonewheel organs. The sound of a tonewheel Hammond can be emulated using modern software audio plug-ins . A number of features of

2016-434: A set of pickups, it changes the pitch of the overall sound slightly. From here, the sound is sent to the main amplifier, and on to the audio speakers. The Hammond organ makes technical compromises in the notes it generates. Rather than produce harmonics that are exact multiples of the fundamental as in equal temperament , it uses the nearest-available frequencies generated by the tonewheels. The only guaranteed frequency for

2100-431: A similar way to a fader on an audio mixing console . As a drawbar is incrementally pulled out, it increases the volume of its sound. When pushed all the way in, the volume is decreased to zero. The labeling of the drawbar derives from the stop system in pipe organs, in which the physical length of the pipe corresponds to the pitch produced. Most Hammonds contain nine drawbars per manual. The drawbar marked "8′" generates

2184-426: A skirt, often a consideration when a church organ was placed in front of the congregation. The model C did not contain the chorus generator, but had space in the cabinet for it to be fitted. The concurrent model D was a model C with a prefitted chorus. Development of the vibrato system took place during the early 1940s, and was put into production shortly after the end of World War II . The various models available were

2268-571: A slightly different tone generator. This was followed by the H-100 series, with a redesigned tonewheel generator and various other additional features. An extended model, the H-300, also featured an integrated drum machine . The organ was not particularly well made, and suffered a reputation for being unreliable. Hammond service engineer Harvey Olsen said, "When they [H-100s] work, they sound pretty decent. But die-hard enthusiasts won't touch it." Though

2352-471: A slower pace and generate a lower pitch for a short time. Hammond's New B3 contains similar switches to emulate this effect, though it is a digital instrument. The Hammond organ's technology derives from the Telharmonium , an instrument created in 1897 by Thaddeus Cahill . The telharmonium used revolving electric alternators which generated tones that could be transmitted over wires. The instrument

2436-526: A stationary bass woofer . This creates a characteristic sound because of the constantly changing pitch shifts that result from the Doppler effect created by the moving sound sources. The Leslie was originally designed to mimic the complex tones and constantly shifting sources of sound emanating from a large group of ranks in a pipe organ. The effect varies depending on the speed of the rotors, which can be toggled between fast (tremolo) and slow (chorale) using

2520-572: A sufficient return. In 1936, the Federal Trade Commission (FTC) filed a complaint claiming that the Hammond Company made "false and misleading" claims in advertisements for its organ, including that the Hammond could produce "the entire range of tone coloring of a pipe organ". The complaint resulted in lengthy hearing proceedings, which featured a series of auditory tests that pitted a Hammond costing about $ 2600 against

2604-419: A synchronous AC motor and an associated gearbox that drives a series of rotating disks. Each disk has a given number of smooth bumps at the rim; these generate a specific frequency as the disk rotates close to a pickup assembly that consists of a magnet and electromagnetic coil . As each bump in the wheel approaches the pickup, it temporarily concentrates the magnetic field near it, and thus strengthens

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2688-437: Is turned on for about four seconds. The "Start" switch is then released, whereupon the organ is ready to generate sound. The H-100 and E-series consoles and L-100 and T-100 spinet organs, however, had a self-starting motor that required only a single "On" switch. A pitch bend effect can be created on the Hammond organ by turning the "Run" switch off and on again. This briefly cuts power to the generators, causing them to run at

2772-545: The Hammond Clock Company , in 1928. As well as clocks, his early inventions included three-dimensional glasses and an automatic bridge table shuffler. However, as the Great Depression continued into the 1930s, sales of the bridge table declined and he decided to look elsewhere for a commercially successful product. Hammond was inspired to create the tonewheel or "phonic wheel" by listening to

2856-488: The Hammond organ and in telephony to generate audible signals such as ringing tone . It was developed by Thaddeus Cahill for the telharmonium c. 1896 and patented in 1897. It was reinvented around 1910 by Rudolph Goldschmidt for use in pre– vacuum-tube radio receivers as a beat frequency oscillator (BFO) to make continuous wave radiotelegraphy ( Morse code ) signals audible. The tonewheel assembly consists of

2940-426: The fundamental of the note being played, the drawbar marked "16′" is an octave below, and the drawbars marked "4′", "2′" and "1′" are one, two and three octaves above, respectively. The other drawbars generate various other harmonics and subharmonics of the note. While each individual drawbar generates a relatively pure sound similar to a flute or electronic oscillator, more complex sounds can be created by mixing

3024-400: The "classic" Jimmy Smith sound. In addition to drawbars, many Hammond tonewheel organ models also include presets, which make predefined drawbar combinations available at the press of a button. Console organs have one octave of reverse colored keys (naturals are black, sharps and flats are white) to the left of each manual, with each key activating a preset; the far left key (C), also known as

3108-579: The 1960s, Hammond began to manufacture transistor organs in response to competitors such as Lowrey and Wurlitzer who were offering them, with a greater feature set compared to tonewheel Hammonds. The first organ that bridged the gap between tonewheel and transistor was the X-66, introduced in May 1967. The X-66 contained just 12 tonewheels, and used electronics for frequency division . It contained separate "vibrato bass" and "vibrato treble" in an attempt to simulate

3192-496: The 1970s, the Hammond Organ Company abandoned tonewheels and switched to integrated circuits . These organs were less popular, and the company went out of business in 1985. The Hammond name was purchased by the Suzuki Musical Instrument Corporation , which proceeded to manufacture digital simulations of the most popular tonewheel organs. This culminated in the production of the "New B-3" in 2002,

3276-428: The 1970s. Leslie initially tried to sell his invention to Hammond, but Laurens Hammond was unimpressed and declined to purchase it. Hammond modified their interface connectors to be "Leslie-proof", but Leslie quickly engineered a workaround. Some Hammond staff thought Laurens Hammond was being irrational and autocratic towards Leslie, but Don Leslie later said it helped give his speakers publicity. The Leslie company

3360-512: The 8000 Aurora (1976) and 8000M Aurora (1977), which contained drawbars and a built-in rotating speaker. Spinet organs included the K-100 and J-400 series, and the "Cadette" V series. Some models included a headphone jack . The B-3 and C-3 were replaced by the B-3000, designed to be a model for professional use that had the same look and feel of the earlier organs. It contained the same controls, but

3444-578: The A-143 was "warm cherry finish, Early American styling". This model numbering scheme was used for several other series of console and spinet organs that subsequently appeared. The D-100 series, which provided a self-contained version of the RT-3, followed in 1963. The E-100 series was a cost-reduced version of the A-100 introduced in 1965, with only one set of drawbars per manual, a reduced number of presets, and

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3528-541: The B-2/C-2 and B-3/C-3, respectively. In 1959, Hammond introduced the A-100 series. It was effectively a self-contained version of the B-3/C-3, with an internal power amplifier and speakers. The organ was manufactured in a variety of different chassis, with the last two digits of the specific model number determining the style and finish of the instrument. For example, A-105 was "Tudor styling in light oak or walnut", while

3612-674: The BV and CV (vibrato only) and BCV and DV (vibrato and chorus). The B-2 and C-2, introduced in 1949, allowed vibrato to be enabled or disabled on each manual separately. In 1954, the B-3 and C-3 models were introduced with the additional harmonic percussion feature, advertised as "touch response percussion control". Despite several attempts by Hammond to replace them, these two models remained popular and stayed in continuous production through early 1975. The last B-3 and C-3 organs manufactured were built from leftover parts, and are not considered as good as earlier models. To cater more specifically to

3696-571: The FTC claimed that Hammond employees had unfairly manipulated the Skinner organ to sound more like the Hammond. In 1938, the FTC ordered Hammond to "cease and desist" a number of advertising claims, including that its instrument was equivalent to a $ 10,000 pipe organ. After the FTC's decision, Hammond claimed that the hearings had vindicated his company's assertions that the organ produced "real", "fine", and "beautiful" music, phrases which were each cited in

3780-401: The FTC's original complaint, but not included in the "cease and desist" order. Hammond also claimed that although the hearing was expensive for his company, the proceedings generated so much publicity that "as a result we sold enough extra organs to cover the expense." The Hammond Organ Company produced an estimated two million instruments in its lifetime; these have been described as "probably

3864-431: The Hammond organ are not usually found on other keyboards like the piano or synthesizer . Some are similar to a pipe organ , but others are unique to the instrument. Most Hammond organs have two 61-note (five- octave ) keyboards called manuals . As with pipe organ keyboards, the two manuals are positioned on two levels close to each other. Each is laid out in a similar manner to a piano keyboard, except that pressing

3948-534: The New B-3. The XK-3 is part of a modular system that allows an integrated lower manual and pedals to be added. In response to some clones, including a variety of vintage keyboards in a single package, Hammond released the SK series of organs, which include grand piano , Rhodes piano , Wurlitzer electronic piano , Hohner clavinet , and samples of wind and brass instruments alongside the standard drawbar and tonewheel emulation. Keyboard magazine's Stephen Fortner praised

4032-568: The T series used all- solid-state , transistor circuitry, though, unlike the L-100, it did include the scanner-vibrato as seen on the B-3. Other than the T-100 series models, all other T-Series models included a built-in rotating Leslie speaker and some included an analog drum machine , while the T-500 also included a built-in cassette recorder. It was one of the last tonewheel Hammonds produced. In

4116-731: The US, Hammond manufactures a number of dedicated console organs, including the B-3mk2 and the C-3mk2, and the A-405, a Chapel Console Organ. The company has a dedicated Church Advisory Team that provides a consultancy, so churches can choose the most appropriate instrument. The authorized loudspeaker enclosure to use with a console organ was the Hammond Tone Cabinet, which contained an external amplifier and speaker . The cabinet carried

4200-546: The United States. The new company produced their own brand of portable organs, including the XB-2, XB-3 and XB-5. Sound on Sound 's Rod Spark, a longtime Hammond enthusiast, said these models were "a matter of taste, of course, but I don't think they're a patch on the old ones". In 2002, Hammond-Suzuki launched the New B-3, a recreation of the original electromechanical instrument using contemporary electronics and

4284-414: The cancel key, de-activates all presets, and results in no sound coming from that manual. The two right-most preset keys (B and B ♭ ) activate the corresponding set of drawbars for that manual, while the other preset keys produce preselected drawbar settings that are internally wired into the preset panel. Hammond organs have a built-in vibrato effect that provides a small variation in pitch while

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4368-538: The church market, Hammond introduced the Concert Model E in July 1937, which included a full 32-note pedalboard and four electric switches known as toe pistons, allowing various sounds to be selected by the feet. The model E was replaced by the model RT in 1949, which retained the full-sized pedalboard, but otherwise was internally identical to the B and C models. RT-2 and RT-3 models subsequently appeared in line with

4452-419: The coil is connected to an amplifier through a network of switches, contacts, resistor banks, and transformers which can be used to mix the fluctuating current representing the note from one coil with similar currents from other coils representing other notes. A single fundamental frequency can thus be combined with one or more harmonics to produce complex sounds. Tonewheels were first developed for and used in

4536-501: The company struggled to survive, proposing the acquisition of a majority stake in Roland in 1972, which the latter turned down. Roland's Ikutaro Kakehashi did not believe it was practical at that point to move the entire manufacturing operation from the US to Japan, and also viewed Hammond's declining sales figures as a problem. In 1985, Hammond went out of business, though servicing and spares continued to be available after this under

4620-524: The concept of "Harmonic Percussion", which was designed to emulate the percussive sounds of the harp , xylophone , and marimba . When selected, this feature plays a decaying second- or third-harmonic overtone when a key is pressed. The selected percussion harmonic fades out, leaving the sustained tones the player selected with the drawbars. The volume of this percussive effect is selectable as either normal or soft. Harmonic Percussion retriggers only after all notes have been released, so legato passages sound

4704-454: The drawbars in varying amounts. Because of this, the Hammond organ can be considered a type of additive synthesis . Hammond manufactured from 1969 onwards have the footage of each drawbar engraved on its end. Some drawbar settings have become well-known and associated with certain musicians. A very popular setting is 888000000 (i.e., with the drawbars labeled "16′", " 5 + 1 ⁄ 3 ′" and "8′" fully pulled out), and has been identified as

4788-413: The effect only on the first note or chord, making Harmonic Percussion uniquely a "single-trigger", but still a polyphonic effect. Before a Hammond organ can produce sound, the motor that drives the tonewheels must come up to speed. On most models, starting a Hammond organ involves two switches. The "Start" switch turns a dedicated starter motor , which must run for about 12 seconds. Then, the "Run" switch

4872-412: The impractical Telharmonium circa 1896 and later in the original Hammond organs . Tonewheel leakage occurs in the Hammond organ and in similar situations, where the large number of tonewheels causes pickups to overhear tonewheels other than their own. This causes the organ to add chromatics to played notes. In some kinds of music this is undesirable, but in others it has become an important part of

4956-400: The instrument corresponded to a single note, and, to broaden its possibilities, Cahill added several extra tonewheels to add harmonics to each note. This, combined with organ -like stops and multiple keyboards (the Telharmonium was polyphonic), as well as a number of foot pedals, meant that every sound could be sculpted and reshaped — the instrument was noted for its ability to reproduce

5040-484: The instrument had been originally designed for use in a church, Hammond realized that the amateur home market was a far more lucrative business, and started manufacturing spinet organs in the late 1940s. Outside of the United States, they were manufactured in greater numbers than the consoles, and hence were more widely used. Several different types of M series instruments were produced between 1948 and 1964; they contained two 44-note manuals with one set of drawbars each, and

5124-466: The look and layout, and the actual sound". The instrument project nearly stalled after a breakdown in negotiations between Japanese and United States staff, the latter of whom insisted on manufacturing the case in the United States and designing the organ to identical specifications to the original. The company has since released the XK-3, a single-manual organ using the same digital tonewheel technology as

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5208-409: The magnetic field that passes through the coil, inducing a current in the coil by the process of electromagnetic induction . As the bump moves past, this concentrating effect is reduced again, the magnetic field weakens slightly, and an opposite current is induced in the coil. Thus, the frequency of the current in the coil depends on the speed of rotation of the disk and the number of bumps. Typically,

5292-433: The most successful electronic organs ever made". A key ingredient to the Hammond organ's success was the use of dealerships and a sense of community. Several dedicated organ dealers set up business in the United States and there was a bi-monthly newsletter, The Hammond Times , mailed out to subscribers. Advertisements tended to show families gathered around the instrument, often with a child playing it, as an attempt to show

5376-425: The moving gears of his electric clocks and the tones produced by them. He gathered pieces from a second-hand piano he had purchased for $ 15 and combined it with a tonewheel generator in a similar form to the telharmonium, albeit much shorter and more compact. Since Hammond was not a musician, he asked the company's assistant treasurer, W. L. Lahey, to help him achieve the desired organ sound. To cut costs, Hammond made

5460-675: The name of the Organ Service Company. In early 1986, the Hammond brand and rights were acquired by Hammond Organ Australia, run by Noel Crabbe. Then in 1989, the name was purchased by the Suzuki Musical Instrument Corporation, which rebranded the company as Hammond-Suzuki. Although nominally a Japanese company, founder Manji Suzuki was a fan of the instrument and retained several former Hammond Organ Company staff for research and development, and ensured that production would partially remain in

5544-640: The older model continued to be available as the AB until October 1938. A model BA of 1938 may be seen and heard at the Musical Museum , Brentford England. Criticism that the Hammond organ was more aesthetically suitable to the home instead of the church led to the introduction of the model C in September 1939. It contained the same internals as the AB or BC, but covered on the front and sides by "modesty panels" to cover female organists' legs while playing in

5628-544: The organ as a center-point of home life and to encourage children to learn music. Hammond organs, as manufactured by the original company, can be divided into two main groups: The first model in production, in June 1935, was the Model A. It contained most of the features that came to be standard on all console Hammonds, including two 61-key manuals, a 25-key pedalboard, an expression pedal, 12 reverse-color preset keys, and one for

5712-451: The original 122 speaker, the company announced in 2013 that they would start manufacturing a standalone Leslie simulator in a stomp box . Although they are sometimes included in the category of electronic organs, the majority of Hammond organs are, strictly speaking, electric or electromechanical rather than electronic organs, because the sound is produced by moving parts rather than electronic oscillators. The basic component sound of

5796-456: The pedals. To address concerns that the sound of the Hammond was not rich enough to accurately mimic a pipe organ, the model BC was introduced in December 1936. It included a chorus generator, in which a second tonewheel system added slightly sharp or flat tones to the overall sound of each note. The cabinet was made deeper to accommodate this. Production of the old Model A cases stopped, but

5880-457: The percussive effect, and it has been accepted as part of the classic sound. Hammond research and development engineer Alan Young said, "the professionals who were playing popular music [liked] that the attack was so prominent. And they objected when it was eliminated." Tonewheel A tonewheel or tone wheel is a simple electromechanical apparatus used for generating electric musical notes in electromechanical organ instruments such as

5964-414: The public in 1906, with Mark Twain among the appreciative audience. In these presentations, the performer sat at a console to control the instrument. The actual mechanism was so large it occupied an entire room; wires from the controlling console were fed discreetly through holes in the auditorium floor, into the instrument room below. The Telharmonium foreshadowed modern electronic musical equipment in

6048-564: The public in April 1935, and the first model, the Model A, was made available in June of that year. Over 1,750 churches purchased a Hammond organ in the first three years of production, and by the end of the 1930s, over 200 instruments were being made each month. By 1966, an estimated 50,000 churches had installed a Hammond. For all its subsequent success with professional musicians, the original company did not target its products at that market, principally because Hammond did not think there would be

6132-634: The single manual SK1, indicated that it gave an accurate sound throughout the range of drawbar settings, and said the organ sound was "fat, warm, utterly authentic". The XK-1c model was introduced in early 2014, which is simply an organ-only version of the SK1. An updated flagship organ, the XK-5, was launched in 2016, and a stage keyboard, the SK-X followed in 2019, which allows a player to select an individual instrument (organ, piano or synthesizer) for each manual. In

6216-399: The sound of tonewheel crosstalk is now considered part of the signature of the Hammond organ, to the extent that modern digital clones explicitly emulate it. Some Hammond organs have an audible pop or click when a key is pressed. Originally, key click was considered a design defect and Hammond worked to eliminate or at least reduce it with equalization filters. However, many performers liked

6300-549: The sounds of common orchestral woodwind instruments such as the flute , bassoon , clarinet , and also the cello . The Telharmonium needed 671 kilowatts of power and had 153 keys that allowed it to work properly. Hammond organ The Hammond organ is an electric organ invented by Laurens Hammond and John M. Hanert and first manufactured in 1935. Multiple models have been produced, most of which use sliding drawbars to vary sounds. Until 1975, Hammond organs generated sound by creating an electric current from rotating

6384-461: The speaker, that could be closed when the organ was not in use. The D-20 was introduced in 1937 and only allowed sound from the speakers to escape by a louvered opening on one side and a gap in the top. The most commercially successful set of Tone Cabinets were probably the PR series cabinets introduced in 1959. The 40-watt PR40 weighed 126 pounds (57 kg) and was 37.5 inches (950 mm) high. It has

6468-411: The switches selected by the key pressed, determines which tonewheels are allowed to sound. Every tonewheel is connected to a synchronous motor via a system of gears, which ensures that each note remains at a constant relative pitch to every other. The combined signal from all depressed keys and pedals is fed through to the vibrato system, which is driven by a metal scanner. As the scanner rotates around

6552-506: The top seven notes were seldom used. The Hammond Concert models E, RT, RT-2, RT-3 and D-100 had 32-note American Guild of Organists (AGO) pedalboards going up to the G above middle C as the top note. The RT-2, RT-3 and D-100 also contained a separate solo pedal system that had its own volume control and various other features. Spinet models have 12- or 13-note miniature pedalboards. Hammond organ manuals and pedalboards were originally manufactured with solid palladium alloy wire to ensure

6636-437: The twelve basic tones of the musical scale, that would be controlled by a keyboard and heard through a telephone receiver. Cahill built three versions. Each was an advancement over the features of its predecessor. By 1901, Cahill had constructed a working model, to seek financial backing for a finished machine. The Mark I weighed 7 tons. The 1906 model, had 145 separate electric generators. The Mark II weighed almost 200 tons,

6720-535: Was 200 pounds (91 kg) lighter than a B-3. Although promoted by Hammond as a suitable replacement, musicians did not think it had a comparable sound. In 1979, a Japanese offshoot, Nihon Hammond, introduced the X-5, a portable solid-state clone of the B-3. Though transistor Hammonds were criticised for their sound, the company remained commercially successful. Many such models were sold to churches, funeral homes and private residences. Laurens Hammond died in 1973, and

6804-702: Was 60 feet long, had multiple keyboards and controls, and required at least two players. The 1911, last Telharmonium, the Mark III, weighed almost 200 tons, was 60 feet long, had multiple keyboards and controls, and required at least two players, was installed in a special performance room in New York City. A small number of performances were given for live audiences, in addition to the telephone transmissions. Performances in New York City (some at "Telharmonic Hall", 39th and Broadway) were well received by

6888-467: Was bulky enough to require several railway cars for its transportation, because the alternators had to be large enough to generate high voltage for a loud enough signal. The Hammond organ solved this problem by using an amplifier . Laurens Hammond graduated from Cornell University with a mechanical engineering degree in 1916. By the start of the 1920s, he had designed a spring-driven clock, which provided enough sales for him to start his own business,

6972-465: Was declared not successful in 1914. Cahill died in 1934; his younger brother retained the Mark I for decades, but was unable to interest anyone in it. This was the last version to be scrapped, in 1962. Telharmonium tones were described as "clear and pure" — referring to the electronic sine wave tones it was capable of producing. However, it was not restricted to such simple sounds. Each tonewheel of

7056-467: Was sold to CBS in 1965, and the following year, Hammond finally decided to officially support the Leslie speaker. The T-200 spinet, introduced in 1968, was the first Hammond to have an integrated Leslie speaker. Hammond finally purchased Leslie in 1980. Hammond-Suzuki acquired the rights to Leslie in 1992; the company currently markets a variety of speakers under this name. As well as faithful reissues of

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