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Bowers & Wilkins CT800 Setting the Subwoofer gain, Conﬁgure the dipole lobe for a CT8 DS

Models: CT800

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Setting the Subwoofer gain

Figure 21

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Setting the Subwoofer gain

Disconnect the speakers from the power ampliﬁers.

Connect the MF/HF power ampliﬁer to the Subwoofer output of the unit.

Set the output level of the oscillator to zero and connect it to the appropriate test input socket.

Set the oscillator frequency to 25Hz.

Set Bank 1 Switch 1 to ON.

Set Bank 4 Switch 2 to ON.

Set Bank 2 Switches 2 & 3 to OFF.

Connect the AC voltmeter to the output terminals of the MF/HF ampliﬁer.

Raise the output level of the oscillator until the meter reads 2 volts.

Substitute the LF power ampliﬁer for the MF/HF power ampliﬁer. Do not alter the output setting of the oscillator.

Set Bank 4 Switch 2 to OFF.

Adjust the Subwoofer output gain control (C14) until the meter again reads 2 volts.

Conﬁgure the dipole lobe for a CT8 DS

Set Bank 3 Switch 3 as required by ﬁgure 21 according to the position of the CT8 DS in the system.

Set Bank 3 Switch 2 as desired according to preference and Bank 3 Switch 3 as required by ﬁgure 21.

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Bowers & Wilkins CT800 installation manual Setting the Subwoofer gain, Conﬁgure the dipole lobe for a CT8 DS

Contents

CT800 Series Installation ManualTable of Contents Warranty Limited WarrantyHow to claim repairs under warranty IMPORTANT SAFETY INSTRUCTIONS Owner’s ManualExplanation of Graphical Symbols WARNINGSPage Environmental Information IntroductionThe Concept Although the speakers are semi-active and require an active crossover, all power ampliﬁcation must be separately sourced. Each CT8 LR, CT8 CC and CT8 DS requires two channels of power ampliﬁcation, or three if used with a CT8 SW subwoofer. This allows the user maximum ﬂexibility in choosing these components Safety Warning Planning the installationCheck the contents against Figure Planning the installation Speaker PositionFigure 5Surround speaker dispersion mode ~60 oMounting the speakers screws for in the template must be made when cutting an aperture in the wallhead unit of the CT8 LR and CT8 CC speaker. ﬁgureInstallation into drywall ﬁgure Safety WarningIn existing construction Installation to wall surface ﬁgure Continue for all cases Connecting the System The speakersCT8 DS only The CT8 XO crossover/equaliser The CT8 XO Rear PanelDescription of controls Description of ControlsFront left/right channels Setting the LF gain Conﬁgure the unit to the gain of each power ampliﬁerEquipment Required Conﬁgure the CT800 XO to the speakerConﬁgure the dipole lobe for a CT8 DS Setting the Subwoofer gainThe Theory Conﬁgure the equalisersThe Method Laptop computer settings ProcedureSet the “Output” slider to zero and switch on the test signal by Click OK. The graphs will change, but ignore these changes Set Bank 2 Switches 2 & 3 according to the number of ﬁlters required Ancillary equipment Running In and Ancillary EquipmentAftercare Speciﬁcations CT800 system active bass management controller SpeciﬁcationsUK Group UK Sales ll09835 IssueDale Road T +44 1903 221