Pioneer TX-8500 II

Data

General

• Manufacturer: Pioneer
• Model: TX-8500 II
• Type: Stereo/ Mono Tuner
• Years of manufacture: 1977 - 1979
• Made in: Japan
• Color: Stainless steel front - silver
• Power consumption: 20 watts
• Equipment:
  • FETs: 3
  • ICs: 6
  • Transistors: 11
  • Diodes: 16
• Dimensions: 420 x 150 x 395 mm (WxHxD)
• Weight: 8,1 kg
• Original price: 995 DM

Technical data

• Reception: FM / FM and MW
• Tuning display: Analogue
• Frequencies: FM: 88-108 MHz / MW: 535-1605 KHz.
• Frequency response: 20 Hz - 15 kHz (+/- 0.2 dB)
• Input sensitivity:
  • FM Mono: 10.3 dBf (1.8 µV).
  • AM: 300 µV (IHF ferrite antenna)
• 50 dB attenuation sensitivity: Stereo = 37.2 dBf (40 µV)
• Muting: 19.2 dBf (5 µV)
• Distortion factor:
  • at 15 kHz: 0.8%
  • at 1 kHz: 0.1%
• Signal to noise ratio: 75 dB (FM)/ 50 dB (MW)
• Channel separation: 55 dB
• selectivity: 90 dB
• Co-wave selection: 1.0 dB

Spurious wave selection: 80 dB (FM)/ 30 dB (MW)

• IF attenuation: > 110 dB
• IF attenuation: 110 dB
• AM suppression: 65 dB

Connections

• Output Level FM (100% MOD)

Fixed: 650 mV/ 4.2 kOhm Variable: 50 mV - 1.3 V/ 3.6 kOhm (front panel control) Output Level AM (30% MOD) Fixed: 200 mV/ 4.2 kOhm Variable: 15 mV - 400 mV/ 3.6 kOhm (front panel)

• Antenna inputs: 2

300 Ohm - balanced 75 Ohm - unbalanced

Special Features

• Output level adjustable (Output Level)
• Rec Level switch - higher S/N when recording over a wider frequency range (see report)
• Muting switch in 2 steps for FM operation
• Independent output level controls for VHF and medium wave
• Transmitter tuning with 2 setting instruments and linear scale

Remarks

• Other models in the same series:
  • Pioneer TX-5500 II
  • Pioneer TX-6500 II
  • Pioneer TX-8500 II
  • Pioneer TX-9500 II

• Corresponding Amplifier
  • Pioneer SA-5500 II
  • Pioneer SA-6500 II
  • Pioneer SA-7500 II
  • Pioneer SA-8500II
  • Pioneer SA-9500II
  • Pioneer SA-9900

Pictures

• Extract from brochure: Pioneer TX-8500 II

Reviews

• A premium stereo tuner from Pioneer with automatic noise reduction.
• The advanced hi-fi technology in this unit of the time, especially with the rec level check, makes it a very valuable tuner for anyone making recordings from the radio. This uses a signal generator to send a 440Hz signal to the output of a highly stable IC every 1.6 seconds - at the level of a 50% FM modulation.