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Bowers & Wilkins CCM684 2-way in-ceiling system

Description

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CCM684

The CCM684 is a high performance ceiling speaker that’s simplicity itself
to install and use. A two-way design, featuring a 200mm (8in) woven glass
fibre cone bass/midrange driver and a soft dome tweeter in a neat circular
ceiling mount chassis. The tweeter housing pivots for adjustable off-axis
treble response and the speaker also features a three-position EQ switch for
a better off-axis response. Incorporating QuickDogs™ and a plug-and-play functionality it is quick and easy to install.

 

.tagged passive

Passive speakers must be powered by an amplifier. A passive speaker has positive and negative inputs which must be connected to the output of the amplifier with 2-core speaker cable (4-core is required for dual input single stereo speakers).

 

tagged imp-8

Measured in ohms, impedance is the resistance or load that a speaker puts on an amplifier. When multiple speakers are connected to an amplifier channel in parallel (doubled up on the terminals) this actually has the effect of reducing the total resistance (1/Rt = 1/R1 + 1/R2 …). Most amplifiers are rated at 4-16 ohms, so care should be taken to stay within this range. If the total impedance in parallel is less than 4 ohms then the speakers should be wired in series.

tagged music

Speakers with the Music icon are suitable for stereo music systems. Single mono speakers which are packaged individually and indicated by the ‘Single’ icon must be purchased in multiples of two when connecting to a stereo amplifier.

Description
  • 2-way in-ceiling system
General Information
  • Output: Stereo Pair
  • Power Type: Passive
Application
  • Stereo Music
  • Home Cinema: Dolby Atmos Speakers, Surround Speakers
Appearance
  • Visible Shape: Circular
  • Visible Colour: White
Dimensions
  • Frame Diameter (mm): 290mm (11.4in)
  • Cutout Diameter (mm): 250mm (9.8in)
  • Depth behind surface (mm): 133mm (5.2in)
  • Protrusion:4mm (0.2in)
  • Pre-mount Kit:C8
  • Back Box:BB 6C
Detailed Specifications
  • Recommended Amp Power:25 – 130w
  • Frequency range(-6dB) (Hz): 35Hz – 35kHz
  • Impedance Nominal (min): 8Ω (4.5Ω)
  • Sensitivity  SPL(2.83v,1m)(dB): 88dB
Driver Information
  • 1x ø25mm (1in) soft dome tweeter
  • 1x ø200mm (8in) black glassfibre cone bass/midrange

 

Manual

Info Sheet

Drawing

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