Yamaha AX-570

Data

General

• Manufacturer: Yamaha
• Model: AX 570
• Type: Integrated amplifier
• Year of manufacture: 1993 - 1995
• Made in: Malaysia
• Color: Black, Titanium
• Remote control: optional
• Power consumption: 210 W
• Dimensions: 435 × 150 × 388.5 mm (W×H×D)
• Weight: approx. 13 kg
• Original price approx.: 900,- DM

Connections

• Number of inputs: 6
  • Phono switchable
    • MM 2,5 mV / 47 kOhm
    • MC 160 µV / 220 Ohm
  • CD 150 mV / 47 kOhm
  • Tuner 150 mV / 47 kOhm

Tape 1 + 2 150 mV / 47 kOhm AUX 150 mV / 47 kOhm

• • Main In 1 V / 10 kOhm
• Number of outputs:
  • Tape 1 + 2
  • Headphones
  • 2 times 2 loudspeakers

Technical Data

• Continuous power
  • 8 Ohm: 2 × 100 W
  • 4 Ohm: 2 × 150 W
  • 2 Ohm: 2 × 200 W
• Dynamic power
  • 8 Ohm: 2 × 140 W
  • 4 Ohm: 2 × 220 W
  • 2 Ohm: 2 × 300 W
• Total harmonic distortion: at 8 Ohm 0.015 %
• Attenuation factor: 320
• Frequency response:
  • 20-20,000 Hz at 100 W

10-50,000 Hz at 50 W

• Signal-to-noise ratio:
• Stereo Channel Separation:
• Tone control:
  • Bass: ±10 dB at 20 Hz

Treble: ±10 dB at 20 kHz

• Loudness: -30 dB at 1 kHz, stepless loudness, natural sound
• High Filter: No
• Low Filter (Subsonic): -18 dB / oct at 15 Hz
• Mute: 2 speaker pairs on / off
• Direct/Line-Straight: yes

Special Features

• Eight power transistors
• Separable pre- and power amplifier
• Motor-driven controls for source and volume

Gold-plated CD connectors

• Illuminated dots for power, source and volume
• Rec Out selector switch
• Symmetrical circuit board design

Notes

• Other models in the same series:
• Yamaha AX-380
• Yamaha AX-470
• Yamaha AX-570
• Yamaha AX-870
• Yamaha AX-1070

• AX-550 * AX-550
• AX-550

• Successor model:
• AX-590

Sonically balanced analog push-pull transistor amplifier with elegant, simple look. Natural sound philosophy of Yamaha, best components and still a proper full phono preamp MM and MC.

The design of the Yamaha AX-570 is characterized by the round selection switches and stands out pleasantly from the very technical-looking variants. The metal housing is solidly constructed and the materials look very appealing. The discreet use of small light points for information round off the positive overall optical impression.

Pictures

• Pictures: Yamaha AX-570

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Reviews

• STEREO: very good **
• Stereoplay: top class II
• Report in "FonoForum" 11 / 1993

Field report from 25.12.2009

• The user bought a unit on 30.12.1993 by mail order at DM 575,-.
• Device so far okay, but unfortunately the motor-driven input selector switch (source) has been causing contact problems for some time. Contact spray does not help either.

Repair is not worthwhile. Remedy: Input selector switch was bridged with wire jumpers in the "CD" position, i.e. this input is constantly switched through.

My model is from 1992, in 2009 I replaced the input select switch myself. Cost switch ca.80 €. In addition, I replaced the 2 relays for the loudspeaker activation, the original ones had considerable contact problems at low volumes. Subjectively, the AX 570 now sounds even better than new.

• Also had problems with the input selector switch and the volume pot. Took them both completely apart and cleaned them with a wattage stick and contact spray. Helped a lot, think like new. Now after a few years they are giving me problems again. Loudspeaker suctions A&B are on all the time, I think the relay is stuck. Other than that I am very satisfied.

If you only clean the switches with contact spray you usually get problems again after a short time. You have to remove the contact spray from the switch/pot (e.g. with WL-spray), otherwise it will attack the contacts further. Afterwards the contacts are preserved e.g. with contact 61.

A nice illustrated manual can be found here: http://hifi.harald-muss-bleiben.de/thread-606.html

Good luck, Sleeπ

Links

• As usual : NEW switch with gold! (The whole series were such "economy switches" at that time.)HW