B&W CT 7.5 LCRS

One 180 mm driver for each channel

CT7.5 LCRS is the lower cabinet in the CT700 two-way pair.

The single Bowers & Wilkins CT7.5 LCRS belongs in dedicated cinema cabinetry as a left, centre, right or surround channel. The enclosure is 305 × 444 × 265 mm and reaches 288 mm deep with its grille. Its compartment must support the weight and allow terminal access: this vented-box system is designed to be integrated into cinema furniture.

Key features

• Cabinet 305 × 444 × 265 mm.
• 180 mm Aramid Fibre bass/midrange; 25 mm Nautilus cloth-dome tweeter.
• 8-ohm impedance (4.6-ohm minimum); recommended 50–120 W.
• Vented Flowport cabinet; magnetic grille; depth with grille 288 mm.

The simpler configuration

A 180 mm Aramid Fibre bass/midrange unit works with a 25 mm Nautilus tube-loaded cloth-dome tweeter. Flowport forms part of the vented cabinet and the grille attaches magnetically. CT7.4 LCRS uses two 165 mm units in a cabinet 38 mm taller; the single-cone arrangement reduces height and weight while retaining the 444 mm width.

Cinema system figures

Nominal impedance is 8 ohms with a 4.6-ohm minimum; recommended amplification spans 50 to 120 W into 8 ohms. Sensitivity is 92 dB and on-axis response 55 Hz to 22 kHz within ±3 dB, with a lower -6 dB point at 48 Hz. Net weight is 11.6 kg. If several units share cinema cabinetry, plan clearance and cable routes for each channel rather than relying only on front dimensions.

Its magnetic grille spans the same 444 mm cabinet width as CT7.4. Height falls from 343 to 305 mm and weight is 4.15 kg lower. Within 2 dB of reference, stated dispersion exceeds 60 degrees horizontally and 10 degrees vertically. Aim the cabinet towards the audience rather than merely concealing the speaker. Its simpler driver arrangement may help where available height is the principal restriction.