Sony APM-77 W

Data

General

• Manufacturer: Sony
• Model: APM-77, APM-77 W
• Type: Loudspeaker
• Years of manufacture: 1981 - 1988
• Made in: Japan
• Colors: American Walnut, Black
• Dimensions: 405 x 745 x 325 mm (WxHxD)
• Weight: 34,5 kg
• Original price approx.: 1'998 DM

Technical data

• Type: 3-way bass reflex
• Chassis:
  • Low frequency: 230 x 230 mm flat diaphragm with 4 voice coils.

Midrange: 52 x 52 mm flat diaphragm tweeter: 26 x 26 mm flat diaphragm Power handling (nominal/music): 100 W / 200 W

• Efficiency: 90 dB / W / m
• Frequency response: 28 - 30'000 Hz
• Transitional ranges: 700 Hz, 4'500 Hz
• Impedance: 6 Ohm

Special Features

• Square flat diaphragms
• Level control for midrange and tweeter

Remarks

• Other models in the same series:
• Sony APM-6
• Sony APM-8
• Sony APM-33 W
• Sony APM-55 W
• Sony APM-66 ES
• Sony APM-77 W
• Sony APM-500
• Sony APM-700

Pictures

• Extract from brochure: Sony APM-77

• Extract from brochure: Sony APM-77 W

Links

• External link to website "The Vintage Knob": [1]