Heco SM 640 specifications

Category : Speakers

Brand : Heco

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Tech nical data

Special equipment

  • Manufacturer: Heco
  • Model: SM 640
  • Type: Loudspeaker
  • Years of construction: 1973 - 1978
  • Manufactured in: Germany
  • Color: White, walnut
  • Dimensions: 560 x 280 x 200 mm (HxWxD)
  • Weight: 8 kg
  • Factory price approx.: 398 DM
  • Type of construction: 3-way, closed
  • Chassis: < ul>
  • Woofer: 250 mm Cone
  • Midrange: 38 mm Dome
  • Tweeter: 25 mm Dome
  • Power handling (nominal/music): 40/60 watts
  • Efficiency:
  • Frequency response: 30 - 25,000 Hz
  • Transition ranges: 800/3000 Hz
  • Impedance: 4 Ohm
    • Woofer: 250 mm Cone
    • Midrange driver: 38 mm Dome
    • Tweeter: 25 mm dome
    • Aluminum front grille
    • Other models of the same series :
    • Heco SM 620
    • Heco SM 625
    • Heco SM 630
    • Heco SM 635
    • Heco SM 640
    • Excerpt from prospectus: Heco SM 635 / 640

    Heco SM 640

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