Description

CWM7.4 S2

Designed for wall-mounted left, centre and right speaker positions in a discreet home cinema system, CWM7.4 S2 can also be mounted beside, above or below the screen. Its 2.5-way configuration features a single Carbon Dome tweeter, twin 100mm (4in) Continuum cone midrange units and twin 100mm (4in) Aramid Fibre/paper bass cones.

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 sold singly (unless a multipack option is available). They are mono speakers which must be used in multiples of 2 when connecting to a stereo amplifier. Multi-channel surround sound systems require an odd number of speakers, so these may also be suitable for that application.

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.

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.

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.

Speakers with the Cinema icon are either dedicated products designed for multi-channel surround sound systems, or ones which we highly recommend for this purpose. It should be noted that the majority of speakers are suitable for use as surround and/or Atmos channels, so this icon does not apply to that application, and instead focuses on front speakers and subwoofers.

Description

• 3-way in-wall system

General Information

• Output: Mono
• Power Type: Passive
• Weight Each (Kg): 6.2

Application

• Stereo Music
• Home Cinema: Centre Speakers, Front Speakers, LCR Speakers, Surround Speakers

Appearance

• Visible Shape: Rectangular
• Visible Colour: White

Dimensions

• Frame height:625mm (24.6in)
• Frame width:175mm (6.9in)
• Depth (behind surface):92.5mm (3.64in)
• Cut-out height:597mm (23.5in)
• Cut-out width:147mm (5.8in)
• Protrusion:8mm (0.3in)
• PMK:PMK CWMC7
• Net weight:6.2kg (13.73 lb)
• Finishes:Grille: White

Detailed Specifications

• Recommended amplifier power:25W – 150W into 8Ω on unclipped programme
• Compatible Amplifier (Watts RMS): 25 – 150
• Frequency range (-6dB):-6dB at 43Hz and 33kHz
• Nominal Impedance (Ω): 8Ω (minimum 4.9Ω)
• Max Power High (Watts): 150
• Sensitivity: 86dB spl (2.83Vrms, 1m)
• Frequency Response -3dB:45Hz – 28kHz ±3dB
• Harmonic distortion:2nd and 3rd harmonics (90dB, 1m)
  <1% 80Hz – 33kHz
  <0.5% 120Hz – 33kHz

Driver Information

• 1x ø25mm (1 in) Carbon Dome high-frequency
• 2x ø100mm (4 in) Continuum cone mid/bass
• 2x ø100mm (4 in) Aramid Fibre/Paper profile bass

Manual

Info Sheet

Drawing