Speakers used in Jennings Organ Company organs - mostly Goodmans

1952-1962

An early J50 organ, c. 1954, detail from a photo by Derek Underdown, a Goodmans Audiom in place. Audioms are likely to have been used also in the Jennings extension speaker cabinets - termed by Derek and Tom "Tone Cabinets".

Picture thanks to Tony Standing, Derek's daughter.

Tone Cabinets

Detail from a picture taken by Derek at the "British Industries Fair", Olympia, May 1954 - a Jennings J51 organ and to its right an ancillary "Tone Cabinet".

Details from the Jennings organ brochure of 1959. Note that these cabinets, which were designed to accompany the Model B and Model D organs, stood 4 1/2 feet tall.

Below, a detail from a flyer for the Model G organ, late 1960 / early 1961. Nine speakers were recommended, as its three power sections could put out a total 150 watts. The bass enclosure probably contained a Goodmans Audiom 90, an 18" driver developed in the early 1950s for organ and public address applications. The middle frequency wall-mounted units possibly something like the Goodmans Audiom 60; the wall-mounted tweeters perhaps embodying a pair each of Goodmans Trebax horns?

The "nine loudspeakers altogether" mentioned in the brochure will therefore have been: 1 x 18"; 2 x 12"; and 6 x Trebax tweeters.

The system will have had a fairly complex cross-over network to protect both tweeter and wall-mounted middle-frequency units from excessive power, and to protect the horns especially from damaging low frequencies.

Jennings Organ Company, brochure 1961, detail.

Below, old pictures of two Goodmans Audiom 70 speakers (12" bass drivers, 20 watts handling, 15 ohms) removed from a Jennings Organ, most likely a species of D1 or D2 "Entertainment" organ. The pictures are just a little too old and small to make out any date code.

Note the runs of twisted green and yellow wire, typical Jennings procedure.

Technical specifications from the Goodmans "Loudspeaker Manual" of 1960/1961 - 18lbs (8kg) apiece, so not insubstantial.

Price in 1961

Box label from an Audiom 70, noted as being part number 84011.

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