• Country
• United States of America (USA)

• Manufacturer / Brand
• Apt Corporation; Cambridge, MA

• Year
• 1979

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 272168

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

• Number of Transistors
• Semiconductors present.

• Semiconductors
• 2N3904 2N3906 2N5484 2SA1112 2SC1345 2SC2952 MJ15022 MJ15023 MPS-D01 MPS-D51 MPS-U10 MPS-U60 RC4558 TL072

• Main principle
• Audio-Amplification; Hi-Fi-High End products

• Wave bands
• - without

• Details
• Hi-Fi equipment

• Power type and voltage
• Alternating Current supply (AC) / 110-120; 220-240 Volt

• Loudspeaker
• - This model requires external speaker(s).

• Power out
• 100 W (150 W max.)

• Material
• Metal case

• from Radiomuseum.org
• Model: Power Amplifier Apt-1 - Apt Corporation; Cambridge, MA

• Shape
• Book-shelf unit.

• Dimensions (WHD)
• 429 x 265 x 87 mm / 16.9 x 10.4 x 3.4 inch

• Notes
• Ausgangsleistung: > 2 x 100W an 8 Ohm oder 4 Ohm, 2 x 150W an 2 Ohm, 2 x 65W an 16 Ohm.
  Dämpfungsfaktor: > 200 an 8 Ohm
  Frequenzgang: 0 Hz bis 30 kHz (+0, -0.5 dB)
  Sensitivität: 925 mV RMS für 100 Watt an 8 Ohm
  Eingang: 50k//100pF
  THD (Vollvermögen) < 0.03% (< 0.05% bei 2 Ohm Last)
  IMD (SMPTE, 60Hz und 7 kHz, 4:1) < 0.03%
  IMD (IHF, 19 kHz und 20 kHz, 1:1) < 0.01%
  TIM < 0.006%
  Rauschabstand -80 dB (bei 1 w/8 Ohm)
  Übersprechen < - 70dB (1 kHz), < -50 dB (20 kHz) 
   

• Net weight (2.2 lb = 1 kg)
• 10 kg / 22 lb 0.4 oz (22.026 lb)

• Mentioned in
• -- Original-techn. papers. (Apt Corporation Service Manual)

• Author
• Model page created by Aren van Waarde. See "Data change" for further contributors.

• Other Models

• Here you find 4 models, 4 with images and 3 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Apt Corporation; Cambridge, MA