Description

The CCM664 is a ceiling speaker distinguished by its adjustable tilt offset 25mm (1in) soft dome tweeter. It brings both a smoother and more detailed high frequency performance to a package that also includes a woven glass fibre150mm (6in) bass/midrange driver and three-position EQ switch for a better off-axis response.

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).

These speakers are packaged and sold as a pair and cannot be purchased individually (with the exception of some active speaker models).

These speakers have pivoting tweeters or drivers which help direct sound towards the listening area. This helps with off-axis speaker placement, or to target seating areas in surround sound applications.

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.

This icon indicates the size in inches of the speaker’s main drive unit(s). As a rule, larger drivers can produce lower frequencies for better bass response. They also typically have a higher maximum power handling.

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): 240(9.5in)
• Cutout Diameter (mm): 202(8in)
• Depth behind surface (mm): 133(5.2in)
• Protrusion:4mm (0.2in)
• Pre-mount Kit:C6
• Back Box:6C

Detailed Specifications

• Recommended Amplifier Power (Watts RMS): 25 – 130w
• Frequency range(-6dB) (Hz): 45 Hz- 35kHz
• Impedance Nominal (min): 8Ω- 4.5Ω
• Sensitivity  SPL(2.83v,1m)(dB): 87dB

Driver Information

• 1x ø25mm (1in) Nautilus™ tube loaded aluminium dome tweeter
• 1x ø150mm (6in) black glassfibre cone bass/midrange driver

Manual

Info Sheet

Drawing