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IMPORTANT SAFETY INSTRUCTIONS

The CT8 XO active crossover is a powered device. Before use, please read and heed the following 
instructions:

Caution:

To reduce the risk of electric shock, do not dismantle the apparatus and do not expose the apparatus 
to rain or moisture. No user-serviceable parts inside. Refer servicing to qualified personnel.

Explanation of Graphical Symbols

The lightning flash within an equilateral triangle is intended to alert you to the presence of 
uninsulated “dangerous voltage” within the product’s enclosure that may be of sufficient 
magnitude to constitute an electric shock to persons.

The  exclamation  point  within  an  equilateral  triangle  is  intended  to  alert  you  to  the 
presence of important operating and maintenance (servicing) instructions in the literature 
accompanying the appliance.

WARNINGS:

Read these instructions.

Keep these instructions.

Heed all warnings.

Follow all instructions.

Do not use this apparatus near water.

Clean only with dry cloth.  

Do not block any ventilation openings.  Install in accordance with the manufacturer’s  

 

 

instructions.  

Owner’s Manual

3

Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including  

 

amplifiers) that produce heat.  

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 grounding prong.  The wide  

 

blade or the third prong are provided for your safety.  If the provided plug does not fit into your outlet, consult  

 

an electrician for replacement of the obsolete outlet.  

10  Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles and  
 

the point where they exit from the apparatus.  

11  Only use attachments/accessories specified by the manufacturer.

12   

          Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or   

 

 

          sold with the apparatus.  When a cart is used, use caution when moving the cart/apparatus  

 

 

          combination to avoid injury from tip-over.  

13  Unplug this apparatus during lightning storms or when unused for long periods of time.

14  Refer all servicing to qualified service personnel.  Servicing is required when the apparatus has been  
 

damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have  

 

fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or  

 

has been dropped.  

15   When replacement parts are required, be sure the service technician has used  replacement parts specified  
 

by the manufacturer or have the same characteristics as the original part. Unauthorised substitutions may  

 

result in fire, electric shock or other hazards.

16   For continued protection against fire hazard, use fuses only of the correct type and rating. Mains fuses are  
 

located inside the casing of the appliance and should be replaced only by an authorised operative.

17  Isolation of the appliance from the power supply is by means of either the switch on the rear of the    
 

appliance or removal of the power cord from the rear of the appliance or removal of the power cord   

 

from the wall power outlet. Either the wall outlet or the rear of the appliance must remain freely  

 

 

accessible at all times while the apparatus is in use.

18  This product should be operated only from the type of power source indicated by the marking adjacent to the  
 

power cord entry. If you are not sure of the type of power supply to your home, consult your product dealer  

 

or local power company.

Summary of Contents for CT XO

Page 1: ...CT800 Series Installation Manual...

Page 2: ...Speakers Installing CT8 DS Into a Drywall Installing CT8 DS to a Wall Surface Connecting the System The Speakers The CT8 XO Crossover Equaliser Description of Controls Con gure the CT800 XO to the Sp...

Page 3: ...authorised by B W c for damages caused by faulty or unsuitable ancillary equipment d for damages caused by accidents lightning water re heat war public disturbances or any other cause beyond the reas...

Page 4: ...ched particularly at plugs convenience receptacles and the point where they exit from the apparatus 11 Only use attachments accessories speci ed by the manufacturer 12 Use only with the cart stand tri...

Page 5: ...of re 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 re or electric shock...

Page 6: ...ith a free standing speaker Furthermore because of the normal custom install practice of hiding built in speakers with acoustically transparent cloth that matches the d cor all the models except one a...

Page 7: ...s to extend their bass response well below the accepted lower limit of human hearing CT8 XO An active line level crossover equaliser that a is required for each CT8 LR CT8 CC and CT8 DS and must be co...

Page 8: ...This is true to some extent but the ears can process directional information at very low frequencies and the more the bass of the main channels is extended the more realistic the sound stage becomes M...

Page 9: ...e This is the 60o wide zone of low direct sound level created by the opposing polarity drivers on each side You will notice from gures 3 and 4 that for 6 1 and 7 1 systems the side speakers are shown...

Page 10: ...ole and dipole operation The mode of operation is set by a relay inside the speaker the state of which is controlled from the CT8 XO crossover equaliser assigned to the speaker via a cable connecting...

Page 11: ...lied for this purpose The shaded area at the front of the template is to allow clearance for the movement of the bass cones For the CT8 DS the side ring drive units require free acoustic access into t...

Page 12: ...height t the bosses with the conical shape towards the oor gure 8 For minimum height have them pointing into the speaker gure 9 Screw in the feet close to where you think the nal adjustment will be w...

Page 13: ...ss brace is level and tted strongly enough to take the substantial weight of the speaker The speaker can be supported by the cross brace and the retaining bracket alone if desired or a more complex su...

Page 14: ...ining 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...

Page 15: ...he two anged nuts E onto the threaded studs and tighten If the socket drive does not have a nut retaining feature we recommend the use of a small piece of Bostik Blu Tack or similar reusable adhesive...

Page 16: ...power ampli cation In all cases ensure that the positive terminal of the speaker is connected to the corresponding positive output connector of the power ampli er Failure to observe this will result i...

Page 17: ...ype of connectors could lead to a severe tonal imbalance in the system depending on the other equipment used in the installation If 12V trigger switching of the dispersion mode monopole dipole of the...

Page 18: ...functions T1 Test input socket unbalanced To connect external signal generator T2 Test input socket balanced To connect external signal generator T3 Output level indicator lights To balance levels C1...

Page 19: ...Centre channel These settings apply when all power ampli ers have the same gain the parametric equalisers are bypassed trigger switching is used to set the dipole monopole mode of the CT8 DS speakers...

Page 20: ...r to the output terminals of the MF HF ampli er Raise the output level of the oscillator until the meter reads 2 volts Substitute the LF power ampli er for the MF HF power ampli er Do not alter the ou...

Page 21: ...ampli er Raise the output level of the oscillator until the meter reads 2 volts Substitute the LF power ampli er for the MF HF power ampli er Do not alter the output setting of the oscillator Set Ban...

Page 22: ...it better in another An average of several measurements taken at different positions throughout the room should ideally be used to ensure an overall improvement in all listener positions The Method W...

Page 23: ...button to open the Volume and Input Levels window Figure 22 Figure 23 22 Laptop computer settings Run the laptop from its battery and disconnect its transformer power supply when taking measurements T...

Page 24: ...he Levels box set the sine sweep to 40dB FS full scale Perform a number of measurements in different positions by clicking the button or pressing the F2 key Make the last measurement you take close to...

Page 25: ...clean up the display Make sure the following button is turned off To remove the measurements we used to make the reference click the erase button and select the settings shown in gure 28 this will rem...

Page 26: ...ch lter is at the target level the desired smoothed level Lower the lter Q controls C5 C8 C11 to broaden the range of the lters until the response is as smooth as possible The controls are to some ext...

Page 27: ...andards of such products are improving all the time and your dealer will be able to demonstrate a variety of suitable up to date products In the speci cation we recommend a range of ampli er powers Th...

Page 28: ...from the cabinet Spray onto the cleaning cloth not directly onto the cabinet The grille fabric may be cleaned with a normal clothes brush whilst the grille is detached from the cabinet When replacing...

Page 29: ...tal over 60o arc Vertical over 10o arc 93dB spl 2 83V 1m mf hf 2nd and 3rd harmonics 90dB 1m 1 45Hz 20kHz 0 5 55Hz 20kHz 8 minimum 4 300Hz 4kHz 500W 1000W into 8 on unclipped programme 0 1 Height 1100...

Page 30: ...e null zone 30o 250Hz 18kHz 93dB spl 2 83V 1m 2nd and 3rd harmonics 90dB 1m 1 45Hz 20kHz 8 minimum 4 300Hz and 4kHz monopole mode 300Hz dipole mode 50W 1000W into 8 on unclipped programme 0 1 Height 1...

Page 31: ...UK Group UK Sales T 44 1903 221 500 E uksales bwgroup com B W Group North America T 1 978 664 2870 E marketing bwgroupusa com B W Group Asia Ltd T 852 2 869 9916 E showroom bwgroup hk B W Group Ltd Da...

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