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Image Not Available for input for mixing attenuator
input for mixing attenuator
Image Not Available for input for mixing attenuator

input for mixing attenuator

Datecirca 1941
Inventory NumberWJ0643
ClassificationAttenuator/Mixer
Subject
    Maker Psycho-Acoustic Laboratory, Harvard University 1940 - 1962
    Maker Daven Radio Company 1924 - c. 1970
    Dimensions8.7 × 50 × 10 cm (3 7/16 × 19 11/16 × 3 15/16 in.)
    DescriptionMounted in instrument rack #17 (WJ0648)
    Signed stamped on back: THE DAVEN COMPANY / NEWARK, NJ / TYPE T-256-F / CIRCUIT: TEE / IMP: 500/500 / ATTENUATION: / PER STRP 2 D.B. / MAXIMUM: INFINITE / SERIAL NO. B53773 stamped on back: THE DAVEN COMPANY / NEWARK, NJ / TYPE T-256-F / CIRCUIT: TEE / IMP: 500/500 / ATTENUATION: / PER STRP 2 D.B. / MAXIMUM: INFINITE / SERIAL NO. B53774 stamped on back: THE DAVEN COMPANY / NEWARK, NJ / TYPE T-256-F / CIRCUIT: TEE / IMP: 500/500 / ATTENUATION: / PER STRP 2 D.B. / MAXIMUM: INFINITE / SERIAL NO. B53775 stamped on back: THE DAVEN COMPANY / NEWARK, NJ / TYPE T-256-F / CIRCUIT: TEE / IMP: 500/500 / ATTENUATION: / PER STRP 2 D.B. / MAXIMUM: INFINITE / SERIAL NO. B53776
    Curatorial Remarkslocated in basement of William James Hall in the Stevens display weight is an estimate and not necessarily accurate
    FunctionTo control amplitude of three types of test signals
    Historical AttributesUsed in the Psycho-Acoustic Laboratory (PAL) in Memorial Hall, Harvard University.
    Label found with WJ0344
    early noise generator
    Psycho-Acoustic Laboratory, Harvard University
    Date: circa 1942
    Object number: WJ0344
    Label found with WJ0337
    three channel pre-amplifier mixer
    Psycho-Acoustic Laboratory, Harvard University
    Date: circa 1941
    Object number: WJ0337
    Image Not Available for continuous adjustable phase shifter model GS E-5725
    continuous adjustable phase shifter model GS E-5725
    Psycho-Acoustic Laboratory, Harvard University
    Date: circa 1952
    Object number: WJ0282
    Image Not Available for FLYBAR (flight by auditory reference) single channel magnetic loop wire recorder
    FLYBAR (flight by auditory reference) single channel magnetic loop wire recorder
    Psycho-Acoustic Laboratory, Harvard University
    Date: circa 1943
    Object number: WJ0289
    phonographic tone arms, ensemble
    phonographic tone arms, ensemble
    Psycho-Acoustic Laboratory, Harvard University
    Date: circa 1961
    Object number: WJ0262a
    portfolio of psycho-acoustic diagrams and photos
    portfolio of psycho-acoustic diagrams and photos
    Psycho-Acoustic Laboratory, Harvard University
    Date: April 1943
    Accessories: large acid-free portfolio
    Object number: WJ0657
    phonographic tone arms, ensemble
    phonographic tone arms, ensemble
    Psycho-Acoustic Laboratory, Harvard University
    Date: circa 1961
    Object number: WJ0262b
    phonographic tone arms, ensemble
    phonographic tone arms, ensemble
    Psycho-Acoustic Laboratory, Harvard University
    Date: circa 1961
    Object number: WJ0262c
    phonographic tone arms, ensemble
    phonographic tone arms, ensemble
    Psycho-Acoustic Laboratory, Harvard University
    Date: circa 1961
    Object number: WJ0262d
    phonographic tone arms, ensemble
    phonographic tone arms, ensemble
    Psycho-Acoustic Laboratory, Harvard University
    Date: circa 1961
    Object number: WJ0262e
    phonographic tone arms, ensemble
    phonographic tone arms, ensemble
    Psycho-Acoustic Laboratory, Harvard University
    Date: circa 1961
    Object number: WJ0262f
    phonographic tone arms, ensemble
    phonographic tone arms, ensemble
    Psycho-Acoustic Laboratory, Harvard University
    Date: circa 1961
    Object number: WJ0262g