B&W DS 8 S

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Contents 1 Description 2 Specifications 2.1 Technical Features 2.2 Description 2.3 Drive units 2.4 Frequency range 2.5 Frequency response 2.6 Dispersion 2.7 Horizontal 2.8 Vertical 2.9 Sensitivity 2.10 Harmonic Distortion 2.11 Nominal Impedance 2.12 Crossover frequencies 2.13 Recommended Amplifier Power 2.14 Max. Recommended Cable Impedance 2.15 Dimensions 2.16 Net weight 2.17 Cabinet- Real Wood Veneers 2.18 Grille 2.19 Supplementary data

[edit] Description

• Manufacturer: B&W

Accommodating surround channels in the home usually involves mounting a speaker to the side or to the rear of the listening room. In larger 6- or 7-channel systems, it may even involve both. In order to maximise the quality of each location, the DS8S has been designed to operate as either a monopole or dipole design. For use at the side of a room, the diffuse dipole mode gives a more cinematic feel, yet at the rear of a room, the direct monopole mode gives better directional information.

In monopole mode, the DS8S is a 2-way system, using a Kevlar cone bass/midrange driver and tube-loaded aluminium dome tweeter mounted on the front of the cabinet. In dipole mode, the front tweeter is switched off and the side firing midrange and tweeter units come into play. The system is then a 3-way, with the front main driver acting only as a bass unit.

Switching between the two modes can be done manually, using a switch on the front of the speaker, or more conveniently by means of a 12V trigger.

[edit] Specifications

[edit] Technical Features

• Tube-loaded aluminium dome tweeter
• Kevlar brand fibre cone bass / midrange
• Matrix cabinet
• Bracket for on-wall mounting included

[edit] Description

• 2-way closed-box selectable dipole / monopole surround system

[edit] Drive units

• 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

[edit] Frequency range

• -6dB at 45Hz and 50kHz (monopole mode)
• -6dB at 45Hz and 18kHz (dipole mode)

[edit] Frequency response

• 60Hz - 22kHz ±3dB on reference axis (monopole mode)

[edit] Dispersion

• Monopole mode: within 2dB of reference response

[edit] Horizontal

• over 40º arc

[edit] Vertical

• over 10º arc
• Dipole mode: horizontal figure of eight
• Effective null zone ±30º (250Hz - 15kHz)

[edit] Sensitivity

• 89dB spl (2.83V, 1m)

[edit] Harmonic Distortion

• 2nd and 3rd harmonics (90dB, 1m)
• <1%120Hz - 22kHz
• <0.5% 150Hz - 20kHz

[edit] Nominal Impedance

• 8Ω (minimum 4.4Ω)

[edit] Crossover frequencies

• 4kHz (monopole mode)
• 250Hz & 4kHz (dipole mode)

[edit] Recommended Amplifier Power

• 25W - 120W into 8Ω on unclipped programme

[edit] Max. Recommended Cable Impedance

• 0.1Ω

[edit] Dimensions

• Height: 360mm (14.2 in)
• Width: 622mm (24.5 in)
• Depth: 205mm (8.1 in)

[edit] Net weight

15kg (33 lb)

[edit] Cabinet- Real Wood Veneers

• Cherrywood
• Rosenut
• Black Ash

[edit] Grille

• Black cloth

[edit] Supplementary data

• 12V relay current requirement 45mA