• Country
• United States of America (USA)

• Manufacturer / Brand
• Lauten Audio; San Jose, CA

• Year
• 2009–2012 ?

• Category
• Microphone or Pick-up element

• Radiomuseum.org ID
• 349869

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Tubes
• 1

• Valves / Tubes
• 6J1B-Q

• Main principle
• Audio-Amplification

• Power type and voltage
• Powered by external power supply or a main unit. / 115 / 230 Volt

• Material
• Metal case

• from Radiomuseum.org
• Model: ST-221 "Torch" - Lauten Audio; San Jose, CA

• Shape
• Miscellaneous shapes - described under notes.

• Dimensions (WHD)
• 24 x 24 x 180 mm / 0.9 x 0.9 x 7.1 inch

• Notes

• Condenser rod microphone ("torch") with tube preamplifier
  Transducer type: pressure gradient condenser
  Polar pattern: "Cardioid/cardioid" and "Omni/omni" (interchangeable capsules)
  external power supply "PSLA02" via 7-pin XLR cable
  LF output: 3-pin XLR male
  Impedance: <200 ohms,
  Frequency range: 30Hz - 20kHz
  Self-noise: <15dB(A)
  Dynamic range: 117dB min.
  Maximum sound pressure: 132dB at 0.5%THD@1000Hz

  Kondensator-Stabmikrofon ("Torch") mit Röhrenvorverstärker,
  Wandlertyp: Druckgradient Kondensator,
  Richtcharakteristik: "Cardioid/Niere" und "Omni/Kugel" (auswechselbare Kapseln),
  externes Speiseteil  "PSLA02" über 7-poliges XLR-Kabel,
  NF-Ausgang: 3-polig XLR male
  Impedanz: <200 Ohm,
  Frequenzbereich: 30Hz - 20kHz,
  Eigenrauschen: <15dB(A),
  Dynamikbereich: 117dB min.,
  Maximaler Schalldruck: 132dB bei 0.5%THD@1000Hz,

• Net weight (2.2 lb = 1 kg)
• 0.230 kg / 0 lb 8.1 oz (0.507 lb)

• Price in first year of sale
• 1,599.00 USD

• Author
• Model page created by Harald Schlosser. See "Data change" for further contributors.

• Other Models

• Here you find 1 models, with images and with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Lauten Audio; San Jose, CA