Bowers & Wilkins CWM 7.5 S2 2-way in-wall system
- Description
- Specification
- Details & Specifications(PDF)
Description
CWM 7.5 S2
The CWM7.5 shares the acoustic configuration of the 707 S2 and like its sibling, it
houses a 130mm (5in) bass/mid-range Continuum cone driver plus a 25mm (1in) Carbon
Dome tweeter, coupled to a forward-firing FlowportTM for outstanding bass response
from a relatively small footprint. It has a critically formed baffle constructed from glass
reinforced ABS plus its own integrated backbox, ensuring retrofittable installation plus
optimum performance. It’s an outstanding performer when used in stereo or multi-room
installations, and is equally at home as the rear speaker in a larger theatre application.
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).
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
- 2-way in-wall system
Appearance
- Visible Shape: Rectangular
- Visible Colour: White
Dimensions
- Frame height:356mm (14in)
- Frame width:212mm (8.5in)
- Depth (behind surface):102mm (4in)
- Cut-out height:331mm (13in)
- Cut-out width:187mm (7.4in)
- Cut-out height w/PMK:336mm (13.2in)
- Cut-out width w/PMK:192mm (7.6in)
- Reservoir box height:385mm (15.2in)
- Reservoir box width:181mm (7.1in)
- Protrusion:8mm (0.32in)
- PMK:7.5W
- Net weight:3.8kg (8.38 lb)
- Grille: White
- Back Box: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 3.8Ω)
- 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% 90Hz – 33kHz
<0.5% 120Hz – 33kHz
Driver Information
- 1x ø25mm (1 in) Carbon Dome high-frequency
- 1x ø130mm (5 in) Continuum cone mid/bass
