8 Ohm

Adastra CD Series Ceiling Speakers

SKU: 952.528 | 952.534 | 952.543


8 ohm twin driver ceiling speaker




Adastra CD Series background music ceiling speakers with directional tweeter

Available as:

  • C5D: 40w 5 ¼” ceiling speaker
  • C6D: 50w 6 ½” ceiling speaker
  • C8D: 60w 8″ ceiling speaker

These easy fit ceiling speakers are ideal for main speakers, surround sound or remote speaker applications. The two-way design includes a Ferrofluid cooled silk dome tweeter and Polypropylene woofer with rubber surround to deliver the highest level sonic performance. The adjustable tweeter allows for the high frequencies to be focused in the direction of the listening area, this increases the flexibility when locating the speakers off-axis from the listeners.

See the ‘User Manuals’ tab on the left of this page – as manufacturers are making instruction sheets and user manuals available for download only and your purchase may not include a printed version.

  • 2-way easy fit ceiling speakers
  • Polypropylene woofer with rubber surround and Ferrofluid cooled silk dome tweeter
  • Adjustable directional tweeter
  • Spring-loaded terminal connections
  • Fitted with “dog-ear” mounts
  • Dispersion angle: 155°
  • Impedance: 8 ohms


  • Woofer: 130mm (5.25″)
  • Tweeter: 18mm (0.7″)
  • Frequency response: 85Hz – 20kHz
  • Power max.: 80W
  • Power rms: 40W
  • Sensitivity @ 1W/1m: 85dB (±2dB)
  • Cutout: 166mmØ
  • Mounting depth: 72mm
  • Dimensions: 83 x 202mmØ
  • Weight: 850g


  • Woofer: 165mm (6.5″)
  • Tweeter: 18mm (0.7″)
  • Frequency response: 60Hz – 20kHz
  • Power max.: 100W
  • Power rms: 50W
  • Sensitivity @ 1W/1m: 85dB (±2dB)
  • Cutout: 193mmØ
  • Mounting depth: 79mm
  • Dimensions: 93 x 227mmØ
  • Weight: 1.1kg


    • Woofer: 200mm (8″)
    • Tweeter: 25mm (1″)
    • Frequency response: 45Hz – 20kHz
    • Power max.: 120W
    • Power rms: 60W
    • Sensitivity @ 1W/1m: 87dB (±2dB)
    • Cutout: 238mmØ
    • Mounting depth: 90mm
    • Dimensions: 101 x 271mmØ
    • Weight: 1.7kg



Adastra was founded in 1949 and has earned a reputation for high quality public address sound products Meeting the needs of the commercial PA sector for over 60 years their name is known for quality and value Adastra is the choice for 100v line PA sound, zone paging PA, noise pollution control and induction loop equipment The range includes mixer & slave amplifiers, ceiling, cabinet & horn loudspeakers, desk paging & handheld microphones, equipment racks, cables, stands and accessories

Additional information

Speaker Size

5 ¼″, 6 ½″, 8″

Wattage (RMS)

40w, 50w, 60w


Spring Terminals





User Manuals



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