Heco SM 640

Data[edit]

General

  • Manufacturer: Heco
  • Model: SM 640
  • Type: Loudspeaker
  • Years of manufacture: 1973 - 1978
  • Made in: Germany
  • Color: White, Walnut
  • Dimensions: 560 x 280 x 200 mm (HxWxD)
  • Weight: 8 kg
  • Original price approx.: 398 DM


Technical data

  • Type: 3-way, closed
  • Chassis:
    • Woofer: 250 mm cone

midrange driver: 38 mm dome tweeter Tweeter: 25 mm dome tweeter

  • Power handling (nominal/music): 40/60 Watt
  • Efficiency:
  • Frequency response: 30 - 25,000 Hz
  • Crossover: 800/3000 Hz
  • Impedance: 4 Ohm


Special Features

  • Front grille made of aluminium


Remarks[edit]


Pictures[edit]

  • Extract from brochure: Heco SM 635 / 640

Heco SM-635-640-Prospekt-1.jpg


Reports[edit]

Links[edit]