Stereo Tape Recorder Automatic Reverse A4000S

• Brand: Tascam

TEAC Stereo Tape Recorder  with Automatic Reverse model A400S

• Recorder A4000 includes the mechanical tape transport and the playback amplifier.
  It  requires the amplifier Teac RA-40 that includes recording amplifiers and Bias Oscillator. Series A4000 and A4000S appear in 1966. Series A4010 and A4010S
  appear in 1967 with small improvements; Series A4010 GSL appears in 1973 dealing
  with the new tape SLH.
  The two unities are connected  by 2 RCA cables and two multi wire cables and multi contact connectors.
  The integrated system A4000 and RA-40 is labelled as A4010.

• Tape format: 1/4” width
• Track format: 4 Track 2 Channels
• Reel Size: 7 inch (maximum) ; 5 inch minimum
• Tape speed: 7.5 ips  and 3.75 ips  ± 0.5 %
• Wow and Flutter: 7.5 ips < 0.12%. 3.75 ips  < 0.15%  (weighted)
• Heads: 4: erase, record, forward play and reverse play
• Motors: 3: one for capstan 2 speed hysteresis synchronous; 2 eddy current type outer-rotor motor for reel drive
• Bias Frequency: 100 kHz
• Jack  line inputs – 140 mV  10 k ohms unbalanced
• Jack  mic inputs – 0.25 mV 10 k ohms  unbalanced
• Jack  output – 1 V for load impedance  > 100 k ohms
• Headphone output: requires high impedance headphone
• S/N ratio: > 50 dB weighted
• Frequency response:
  • at 7.5 ips: 30 Hz – 20 kHz  (50 Hz – 15 kHz at  ±3 dB)
  • at 3.75 ips: 40 Hz – 15 kHz (50 Hz – 10 kHz at  ±3 dB)
• Crosstalk: 50 dB (channel to channel at 1000 Hz) 40 dB between tracks at 100 Hz
• Power requirements: 100-240 V, 50/60 Hz, 100 W.

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