Solid State Stereo Amplifier RA-610

Rotel, The, Co., Ltd.; Tokyo

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  • Year
  • 1971
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 215201

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

 Technical Specifications

  • Number of Transistors
  • Semiconductors present.
  • Semiconductors
  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Details
  • Hi-Fi equipment
  • Power type and voltage
  • Alternating Current supply (AC) / 100; 117; 220; 240 Volt
  • Loudspeaker
  • - This model requires external speaker(s).
  • Power out
  • 64 W (undistorted)
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Solid State Stereo Amplifier RA-610 - Rotel, The, Co., Ltd.; Tokyo
  • Shape
  • Book-shelf unit.
  • Dimensions (WHD)
  • 16.25 x 4.875 x 8.75 inch / 413 x 124 x 222 mm
  • Notes

  • A stereo integrated hi-fi amplifier housed in a metal cabinet with wooden side panels, with power output of 2 x 32 watts RMS into 8 ohms. The pre-amplifier and power amplifier sections can be separated on the back by removal of jumper connections between Pre-Amplifier Output and Main Amplifier Input phono sockets. With rotary switches for Mode (Rev, Stereo, Left, Right, Mono) and Input Selection (Phono-1, Phono-2, Tuner, Aux1, Aux2), slider controls for Bass (Left and Right) and Treble (Left and Right), push button switches for Speakers (System 1, System 2), Muting, Low Filter, High Filter, Tone Defeat, Tape Monitor and Loudness, RCA phone sockets for Phono-1, Phono-2, Tuner, Aux1 and Aux2 input, DIN and RCA phono sockets for tape input/output, terminals for 2 pairs of loudspeakers, a switched AC outlet and a jack for headphones.

    Specification  
    Continuous Power Output (RMS) 32 watts/channel into 8Ω
    each channel driven
    Intermodulation Distortion less than 0.1% at rated output
    Harmonic Distortion less than 0.1% at rated output
    Frequency Response  
     Main Amp. only
     Auxiliary Inputs    		 3Hz to 100,000Hz +0dB to -3dB
    5Hz to 90,000Hz +0dB to -3dB
    Power Bandwidth (IHF) 3Hz to 55,000Hz
    Input Sensitivity at rated output  PHONO-1:  2.5 mV
     PHONO-2:  2.5 mV
     TUNER:     120 mV
     AUX-1:       120 mV
     AUX-2:       120 mV
     TAPE IN:    120 mV
     MAIN AMP. INPUT: 650 mV
    Input Impedance (at 1,000Hz) Input Impedance (at 1,000Hz)
    PHONO-1:   50kΩ
    PHONO-2:   100kΩ
    TUNER:       25kΩ
    AUX-1, AUX-2, TAPE IN:  25kΩ
    MAIN AMP. INPUT:  35kΩ
    Signal-to-Noise ratio PHONO-1:   65 dB
    PHONO-2:   65 dB
    TUNER:       80 dB
    AUX-1, AUX-2, TAPE IN:  80 dB
    RESIDUAL:  1mV
    Damping Factor 35 at 8Ω
    70 at 16Ω
    Output Impedance Speaker Terminals: 4, 8, 16Ω (at full rating)
    Pre-Amp Output: 50Ω
    Muting -20dB at 1kHz
    Loudness +10dB at 50Hz
    High Filter -96dB at 10kHz
    Low Filter -9dB at 50Hz
    Crosstalk 60dB at 1kHz
  • Net weight (2.2 lb = 1 kg)
  • 13.2 lb (13 lb 3.2 oz) / 5.993 kg
  • Literature/Schematics (1)
  • - - Manufacturers Literature (Owner's manual RA-610)
  • Literature/Schematics (2)
  • - - Manufacturers Literature (Service manual RA-610 Pre-Main Stereo Amplifier)
  • Author
  • Model page created by Franz Scharner. See "Data change" for further contributors.

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