Community D4
Distributed Design 4.5" 2-Way High Output Coaxial Ceiling Speaker


The smallest member of Community's Distributed Design Series, the D4 possesses the advanced features of its larger siblings with performance that belies its small size. Suitable for paging, background music, or to augment larger systems, the D4 is a versatile performer. It installs quickly and provides exceptionally uniform coverage with excellent sonic properties.

Uniform voicing among the Distributed Design product family makes for an easy match to the other models in the series, while a host of design innovations set the D4 apart from other products in its size and price range. Featuring genuine coaxial design with separate magnets for the LF and HF drivers, the D4 exhibits reduced distortion and industry-leading sensitivity permitting 3 dB to 6 dB greater output level, while requiring half the amplification power of competing products.

The proprietary Tru-Phase™ waveguide and perfectly centered driver produce a consistently wide conical polar response up to 16 kHz. Community’s patented Carbon Ring Cone Technology™ increases the effective cone area to further reduce distortion while reinforcing the cone for improved durability.

Exclusive Drop-Stop™ and Twist-Assist™ tabs allow single-handed placement to speed installation and reduce labor time. Drop-Stop’s spring-loaded legs support the back can on the included tile rails and snap-on C-ring, so that the installer no longer needs to hold the can against the tile while tightening the clamps. Twist-Assist performs a similar function for the baffle assembly: when the loudspeaker back cans are pre-installed into a conduit system for termination at a later date, a simple twist of the baffle into the back can brings the Twist-Assist clips together, supporting the baffle assembly while the installer fastens the screws.

The front-face wattage selector switch enables quick adjustment of 70V/100V tap levels. A variety of installation accessories are available to accommodate different ceiling materials. The D4 face-only assembly and back can are also available for separate purchase.

Community D4 Features:

  • High intelligibility with exceptional uniform coverage
  • Consistent, wide dispersion up to 16 kHz
  • True coaxial loudspeakers with HF compression drivers
  • Tru-Phase™ high-frequency waveguide
  • Patented Carbon Ring Cone Technology™
  • Spring loaded Drop-Stop™ installation assistant tabs support the back can on the included rails and C-ring to simplify installation
  • Uniquely designed tile bridge support rails and snap-on C-ring support plates prevent sag
  • Twist-Assist™ loudspeaker face retainer tabs for fast and easy installation
  • 3/4" and 1" knock-outs on the sides of the back can
  • External loop-through Euroblock connectors
  • Rear cover with integrated cable clamp (strain relief) and optional conduit knockout
  • Selectable 8 Ohm or 70V/100V operation
  • Back can and face-only packages available
  • Five year warranty

Community D4 Specifications:

  • Loudspeaker Type: Two-way, full-range, coaxial ceiling loudspeaker, 8 Ohm or 70V/100V operation
  • Operating Range:  62 Hz - 18.5 kHz
  • Frequency Response:  85 Hz - 16 kHz (+/- 5 dB)
  • Max Input Ratings (8 Ohm):  60W continuous, 150W program; 22 volts RMS, 49 volts momentary peak
  • Transformer Taps:
    • 70V:  30W, 15W, 7.5W, 3.75W and low impedance
    • 100V:  30W, 15W, 7.5W
  • Distortion:
    • 500 Hz, 10% Full Power:  0.17% 2nd Harmonic, 0.86% 3rd Harmonic
    • 500 Hz, 1% Full Power:  0.09% 2nd Harmonic, 0.37% 3rd Harmonic
    • 2 kHz, 10% Full Power:  1.83% 2nd Harmonic, 0.81% 3rd Harmonic
    • 2 kHz, 1% Full Power:  0.55% 2nd Harmonic, 0.62% 3rd Harmonic
    • 8 kHz, 10% Full Power:  0.40% 2nd Harmonic, 0.07% 3rd Harmonic
    • 8 kHz, 1% Full Power:  0.21% 2nd Harmonic, 0.09% 3rd Harmonic
  • Sensitivity (1W/1m): 91 dB SPL (120 Hz to 12.5 kHz 1/3 octave bands); 92 dB SPL (250 Hz to 4 kHz speech range)
  • Maximum Output:  109 dB SPL / 115 dB SPL (peak 8 Ohm)
  • Nominal Impedance:  8 Ohms
  • Minimum Impedance:  7.8 Ohms @ 260 Hz
  • Nominal Coverage:  130º conical (1 kHz to 6 kHz); 140º conical (500 Hz to 6 kHz)
  • Axial Q / DI:  4 / 6, 500 Hz to 6 kHz
  • Crossover Frequency:  2 kHz
  • Recommended Signal Processing:  62 Hz high pass filter
  • Drivers:  LF 1x 4.5", HF 1x 3/4" exit compression driver
  • Driver Protection:  Self-resetting solid state circuit breaker
  • Input Connection:  4-position Euroblock connector
  • Controls:  Front-face wattage / low impedance selector switch
  • Enclosure:  Corrosion-resistant zinc plated steel
  • Mounting/Rigging Provisions:  3 steel mounting clamps with 3" grip range
  • Grille:  Powder coated steel with safety line, white finish, paintable
  • Baffle:  Reflex loaded UL 94V-0 rated ABS
  • Safety Features:  3x safety hang points
  • Safety Agency Ratings:  ETL listed to comply with UL1480, UL2043 and CSA60065. Suitable for use in air handling spaces per NFPA 70 and NFPA 90.
  • Face-Only / Back Can Options:  D4-FO Face-Only Assembly, D45-BC Back Can
  • Required Accessories:  Electronic high pass filter
  • Supplied Accessories:  C-Ring supporting plate, tile support bridge rails, grille, paint mask, cut-out template, flat screwdriver
  • Optional Accessories:
    • D45-FAR Face Adapter Ring
    • D45-CATR Can Adapter Ring / Trim Ring
    • D45-NCB New Construction Bracket
  • Dimensions:
    • Width:  9.768" (248.1 mm) bezel diameter
    • Depth:  6.788" (172.4 mm) can depth
    • Cutout Diameter:  8.75" (222 mm)
  • Weight:  7.6 lbs (3.4 kg)
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