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CT800 Series
Installation Manual
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Table of Contents Warranty 2 Owner’s Manual 3 Important Safety Instructions 3 Introduction 5 Environmental Information 5 The Concept 6 Planning the Installation 8 Checking the Contents 8 Speaker Position 8 Surround Speaker Dispersion Mode 9 Mounting the Speakers 10 Installing CT8 DS Into a Drywall 12 Installing CT8 DS to a Wall Surface 13 Connecting the System 15 The Speakers 15 The CT8 XO Crossover/Equaliser 16 Description of Controls 17 Configure the CT800 XO to the Speaker 19 Configure the Unit
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Warranty Dear customer, How to claim repairs under warranty Welcome to B&W. Should service be required, please follow the following procedure: This product has been designed and manufactured to the highest quality standards. However, if something 1 If the equipment is being used in the country of purchase, you should contact the B&W authorised does go wrong with this product, B&W Loudspeakers and its national distributors warrant free of charge dealer from whom the equipment was purchased. l
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Owner’s Manual IMPORTANT SAFETY INSTRUCTIONS 8 Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. The CT8 XO active crossover is a powered device. Before use, please read and heed the following instructions: 9 Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding type plug has two blades and a third grou
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19 Do not overload wall outlets, extension cords or integral convenience receptacles, as this can result in a risk of fire or electric shock. 20 Never push objects of any kind into this product through openings, as they may touch dangerous voltage points or short out parts that could result in a fire or electric shock. Never spill liquid of any kind on the product. Do not place any object containing liquid on top of the product. 4
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Introduction Thank you for purchasing a Bowers and Wilkins Custom Theatre system. Since its foundation in 1966, the continuing philosophy of B&W has been the quest for perfect sound reproduction. Inspired by the company’s founder, the late John Bowers, this quest has entailed not only high investment in audio technology and innovation but also an abiding appreciation of music and movies to ensure that the technology is put to maximum effect. Custom Theatre speakers are specifically designed to
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The Concept The CT 800 range comprises five products: CT8 LR A 3-way speaker intended for front left and right channels, one placed in vertical orientation at each side of the screen. CT8 DS A full range surround speaker that may operate in either 2-way dipole or 3-way monopole mode. CT8 CC A 3-way centre channel speaker that is acoustically similar to the CT8 LR, but designed with a more symmetrical drive unit layout so that it may be used in horizontal orientation immediately above or bel
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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. The CT8 SW subwoofer, unlike the majority of subwoofers currently available, does not contain its own power amplifier and is used in a different manner than is usual. The original concept
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Planning the installation Figure 1 Safety Warning! Figure 5 Figure 6 A CT800 system is capable of producing very high sound pressure levels. Prolonged exposure to high sound levels Figure font: Helv 45, 7pt can lead first to temporary and later permanent hearing damage. Do not exceed recommended Leq (equivalent Figure spacing: 7 x 7 mm sound level) exposure levels, for example, those specified in ISO 1999:1990. Check the contents against Figure 1 Planning the installation Because of the built-i
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Surround speaker dispersion mode Figure 1 Figure 5 Figure 6 Figure font: Helv 45, 7pt Surround speakers generally fall into two main types – those that one might describe as ‘normal’ speakers - so- Figure spacing: 7 x 7 mm called monopoles, where the sound comes from a set of drive units mounted on the front of the enclosure - and those that give a more diffuse sound field, such as dipoles. Each type has its advantages. Most multi-channel music is recorded with home entertainment in mind and is
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Figure 1 Figure 5 Figure 6 Mounting the speakers Figure font: Helv 45, 7pt For optimum performance, it is important that the speakers are firmly and securely mounted. All the speakers may Figure spacing: 7 x 7 mm be mounted directly at floor level, but, as mentioned above, it can be beneficial to raise the position of the surround speakers and, if the screen is high, it may also be beneficial to do the same with the front speakers. In that case, the supporting structure for the speakers should b
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Figure 1 Figure 5 Figure 6 Figure font: Helv 45, 7pt Figure spacing: 7 x 7 mm o ~60 Figure 2 Figure 3 o ~120 ® Figure 7 If it is desired to remove the roller glides, use the Torx key supplied with the speaker to remove the retaining screws. An optional, spike foot kit is also available (Part No FP22359). The kit contains 4 heavy-duty feet that have 40mm o (1.6 in) of vertical adjustment, allowing tilt up to 8 if desired. This tilt is in addition to that offered by the adjustable head unit of
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Figure 13 CT8 DS Only Figure 12 Installation into drywall (figure 12) So that it can be sunk into a standard drywall up to the level of the side-firing drivers, the CT8 DS has a relatively shallow cabinet for its height and is front heavy. To maintain stability, it is equipped with a bracket that enables the rear of the cabinet to be anchored either to a wall surface or the internal studding of a drywall. In existing construction: Use a stud finding tool to locate the positio
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Figure 13 CT8 DS only (cont’d) Installation to wall surface (figure 13) Using the front aspect template provided, mark the centre line of the retaining bracket on the wall. The two angle brackets (A) from the kit are not required. Offer the wall bracket (C) to the wall and mark the screw positions at each end. Drill and plug the wall to take screws in the range 5mm – 6mm (No.10 to No.12) Screw the wall bracket to the wall, trapping the stud plate (B) in position. Figure 12 13
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Figure 8 Figure 9 Figure 15 Figure font: Helv 45, 7pt Figure spacing: 7 x 7 mm Figure 10 Figure 11 Figure 16a Figure 16b SUB - SUB + SUB + SUB - Figure 14 CT8 DS only (cont’d) Figure 17 Continue for all cases Connect the signal and trigger cables to the speaker. Using the Allen key provided, remove the aluminium facing plate on the front of the speaker, taking care that the tweeter protection cover remains in position. Fit the guide tubes (F) into the two through holes. Offer the speaker into
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Connecting the System Figure 8 Figure 9 Figure 15 The speakers Figure font: Helv 45, 7pt All the speakers are provided with a comprehensive choice of connection methods. Binding posts accommodate Figure spacing: 7 x 7 mm ® ® 6mm (1/4 in) or 8mm (5/16 in) spades, 4mm banana plugs and bare wire ends and a Neutrik Speakon socket provides a professional industry standard multiway connection that makes it easy to make a connection in confined spaces, especially when it is sometimes difficult to see
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The CT8 XO Rear Panel The CT8 XO crossover/equaliser CT8 XO rear panel CT8 XO rear panel Front left/right channels The CT8 XO may be placed on a table or shelf or in a 19-in rack. If housed in an Front left/right channels enclosed structure, proper ventilation must be supplied as stated in the in the safety ON instructions. ON Left surround channel Left surround channel The CT8 XO is connected between the surround processor and the power amplifiers. Figure 18 Figure 18 A choice of unbalanced (
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Description of Controls Figure 19 Description of controls LF Contour The unit features a comprehensive set of controls to tune the performance of each speaker according to the conditions of use. The response may be shaped by a combination of three parametric equalisers, each having a level range of +4.5 / -12 dB, and low- and high-frequency contour controls, the effects of which are illustrated in figure 19. In addition, level controls are provided to compensate for any differences in gain bet
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Configure the CT800 XO to the speaker Equipment Required Set Bank 1 Switches 2 & 3 to the type of speaker. • AC voltmeter • Signal Generator capable of outputting a sine wave up to 2V RMS Set Bank 4 Switches 1, 3 & 4 according to the number of subwoofers attached. The conditions of Switches 3 & 4 are irrelevant if Switch 1 is set to ON. • Flat bladed screwdriver to adjust the rotary controls of the CT8 XO Configure the unit to the gain of each power amplifier And to adjust the equalisers to o
