Onkyo TX-2500

Data

Onkyo Stereo Receiver TX-2500

General:

• Manufacturer: Onkyo
• Model: TX-2500
• Years of manufacture: 1977 - 1978
• Manufactured in: Japan
• Color: Silver
• Remote control: no
• Power consumption: 110, 120, 220, 240 V, 50/ 60 Hz, 230 Watt
• Dimensions: 488 x 163 x 400 mm (WxHxD)
• Weight: 12,0 kg
• Original price approx.: 1.100,- DM

Connections:

• Number of inputs:
  • Phono (MM) 2.5 mV / 50 kOhm.
  • 2x Tape In: 150 mV / 50 kOhm
  • 1x DIN socket
  • Dolby In: 150 mV / 50 kOhm
  • Antenna FM (300 Ohm), AM
• Number of outputs:
  • 2x Tape Out (2x Cinch, 1x DIN).
  • Dolby Out: 350 mV / 50 kOhm
  • Headphones (6.3 mm jack)
  • 2 pairs of loudspeakers

Technical Data:

Amplifier:

• Continuous power (at distortion factor)
  • 8 Ohm: 2x 30 W

4 Ohm: 2x 40 W

• Dynamic power
  • 8 Ohm:
  • 4 Ohm:
• Total harmonic distortion: 0.5 % (nominal power), 0.3 % (1 W)
• Damping factor: 40 (8 Ohm, 1 kHz, 10 W)
• Frequency response: 20 - 30,000 Hz (± 1 dB)
• Signal-to-noise ratio:
• Signal-to-noise ratio:
  • Phono: 65 dB
  • Tape: 80 dB
• Stereo channel separation:
• Tone control:
  • Bass: yes, ± 12 dB (100 Hz)
  • Treble: yes, ± 10 dB (10 kHz)
• Loudness: yes
• High Filter: yes, 6 kHz (-12 dB/oct.)
• Low Filter (Subsonic): no
• Mute: no
• Direct/Line-Straight: no

Tuner:

• Reception: FM, MW
• Frequencies:
  • FM: 87.5 - 108 MHz
  • MW: 550 - 1,605 kHz
• Frequency response:
  • FM: 30 - 15,000 Hz (+ 0.5/ -2 dB).
• Input sensitivity:
  • FM: 4 µV (mono), 50 µV (stereo).

Distortion factor:

• • FM: 0.2 % (mono), 0.4 % (stereo)

MW: 0.8

• Signal-to-noise ratio:
• Signal-to-noise ratio:
  • FM: 65 dB (mono), 60 dB (stereo)
  • MW: 40 dB
• Channel separation:
  • FM: 37 dB (1 kHz), 30 dB (100 - 10,000 Hz).
• Selectivity:
  • FM: 42 dB (± 300 kHz, 40 kHz).
• Equal wave selection:
  • FM: 2 dB
• Spurious wave selection:
• IF attenuation:
• IF attenuation:
  • FM: 80 dB
  • MW: 30 dB
• AM suppression: 50 dB

Special Features

• First receiver with servo synchronisation

Remarks

Other models in the same series:

• Onkyo TX-1500
• Onkyo TX-2500
• Onkyo TX-4500
• Onkyo TX-8500

Pictures

• Top image: Technics SA-5550, below: [[Onkyo TX-2500