Bowers & Wilkins DS8S – Surround Loudspeaker System (Pair) | Pre-Owned

In monopole mode, only the two drive units on the front face operate. In dipole mode, the front tweeter is disconnected; the side firing drivers are brought into operation and the crossover frequency to the bass unit is lowered. The drive units on opposing sides are connected out of phase with one another, which creates a wedge-shaped null zone, approximately 60º wide, at right angles to the wall. If the listeners sit within this zone, they become less aware of the location of the speakers and hear more reflected sound; hence the diffuse nature of the sound field.

Specifications

• Crossover Tuning
• Nautilus Tapering Tube
• Tube-loaded aluminium dome tweeter
• Bracket for on-wall mounting included
• 2-way closed-box selectable dipole / monopole surround system
• 3x ø25mm (1 in) aluminium dome high-frequency
• 2x ø100mm (4 in) woven Kevlar cone midrange
• 1x ø180mm (7 in) woven Kevlar cone bass / midrange
• Frequency range(monopole mode): -6dB at 45Hz and 50kHz
• Frequency range (dipole mode): -6dB at 45Hz and 18kHz
• Frequency response: 60Hz – 22kHz ±3dB on reference axis (monopole mode)
• Dispersion Monopole mode: within 2dB of reference response
• Horizontal: over 40º arc
• Vertical: over 10º arc
• Vertical dipole mode: horizontal figure of eight
• Vertical effective null zone: ±30º (250Hz – 15kHz)
• Sensitivity: 89dB spl (2.83V, 1m)
• Harmonic Distortion: 2nd and 3rd harmonics (90dB, 1m) ( <1%120Hz – 22kHz , <0.5% 150Hz – 20kHz)
• Nominal Impedance: 8 Ohms (minimum 4.4 Ohms)
• Crossover frequencies: 4kHz (monopole mode) / 250Hz & 4kHz (dipole mode)
• Recommended Amplifier Power: 25W – 120W into 8 Ohms on unclipped programme
• Max. Recommended Cable Impedance: 0.1 Ohms
• Height: 360mm (14.2 in)
• Width: 622mm (24.5 in)
• Depth: 205mm (8.1 in)
• Net weight: 15kg (33 lb)
• Finishes : Black Ash
• Removable black cloth grills
•12V relay current requirement: 45mA