Holman Preamplifier bookshelf

Apt Corporation; Cambridge, MA

Data
Forum
Pictures
Collections

  • Year
  • 1979–1983
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 271974

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

 Technical Specifications

  • Number of Transistors
  • 35
  • Main principle
  • Audio-Amplification; Hi-Fi-High End products
  • Wave bands
  • - without
  • Details
  • Hi-Fi equipment
  • Power type and voltage
  • Alternating Current supply (AC) / 120/240 Volt
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Holman Preamplifier [bookshelf] - Apt Corporation; Cambridge, MA
  • Shape
  • Book-shelf unit.
  • Dimensions (WHD)
  • 382 x 237 x 84 mm / 15 x 9.3 x 3.3 inch
  • Notes
  • Stereo preamplifier with 2 phono inputs, 2 recorder inputs and outputs, tuner and aux input
    Phono Input 1: 5 mV RMS for a 2V RMS at output, 47 / 100k, 50/100/200 / 400pF. Phono input 2: 5 mV RMS for a 2V RMS at output, 47k, 50pF. RIAA 20Hz-20kHz ± 0.5 dB, 30Hz-15kHz ± 0.2 dB
    Recorder, tuner, auxiliary inputs 320 mV RMS for 2V RMS at output, 50k, 330pF With 2V RMS at output, THD <0.01% (20Hz-20kHz), IMD < 0.01%, TIM <0.006%
    Max undistorted output voltage > 7V RMS
    Phono preamplifier is based on patented circuit by Tomlinson Holman
    Transistors listed only once per type.
     
    Identical to the Holman Preamplifier (rack) except for cabinet style.
     
     
     
    Stereo preamplifier with two phono inputs, two recorder inputs and outputs, tuner and aux input, treble, bass and stereo base width control, subsonic and ultrasonic filter.
    Phono input 1: 5mV RMS on for 2V RMS on output, 47/100k, 50/100/200/400pF. Phono input 2: 5mV RMS on for 2V RMS on output, 47k, 50pF. RIAA 20Hz-20kHz ± 0.5dB,30Hz-15kHz ± 0.2dB.
    Recorder, tuner, aux inputs 320 mV RMS on for 2V RMS on the output, 50k, 330pF. At 2V RMS at the output THD < 0.01% (20Hz-20kHz), IMD < 0.01%, TIM < 0.006%. 
    Maximum undistorted output voltage > 7V RMS.
    Phono preamplifier section is based on patented circuitry from Tomlinson Holman.
    Transistors are only listed once per type.
  • Net weight (2.2 lb = 1 kg)
  • 4.8 kg / 10 lb 9.2 oz (10.573 lb)
  • Price in first year of sale
  • 1,795.00 HFL
  • Mentioned in
  • -- Original-techn. papers. (DISK Juni 1979, p.68-69.)
  • Literature/Schematics (1)
  • - - Manufacturers Literature (Service Manual)
  • Literature/Schematics (2)
  • - - Manufacturers Literature (Tomlinson Holman US Patents und AES Vortrag.)
  • Author
  • Model page created by Aren van Waarde. See "Data change" for further contributors.

 Collections | Museums | Literature

 Forum