Cambridge SoundWorks Speaker MC630 IW User Manual

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Newton Series HD  
In-Wall Loudspeaker  
Contents  
Introduction ................................................................... 4  
About This Manual ........................................................ 4  
Product Contents .......................................................... 4  
Inspecting for Damage .................................................. 5  
System Configuration .................................................... 5  
Speaker Placement ....................................................... 6  
Wiring ............................................................................ 7  
Speaker Mounting ......................................................... 8  
Painting ....................................................................... 10  
Enclosure Cleaning .....................................................10  
In Case of Difficulty .................................................. 11  
Specifications ............................................................ 11  
Dimensions  
................................................................. 12  
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About This Manual  
Contents  
Successful installation of an in-wall speaker requires a working knowledge  
of typical building construction and wiring. If you are an experienced and  
knowledgeable Do-It-Yourself homeowner this manual will help you successfully  
install your speakers. However, it is beyond the scope of this manual to fully  
instruct the installer on the basic techniques of wiring and carpentry. If you are  
not already comfortable with these techniques we recommend you have the  
speakers professionally installed.  
1. One Speaker (MC650-iw pictured)  
2. Cutting template and paint mask.  
Cambridge SoundWorks is not responsible for any damage resulting from  
the installation or installation process, or due to wiring or materials used in the  
installation.  
If you are not comfortable with performing a speaker system installation, we  
recommend you rely on a qualified home entertainment installer. Contact your  
dealer or Cambridge SoundWorks for assistance in selecting a suitable installer.  
Introduction  
After Unpacking  
Thanks for choosing a Newton HD Series in-wall speaker. The  
MC630-iw and MC650-iw feature the finest drivers, precision  
internal crossover circuitry, and an easy to install in-wall  
configuration.  
Save the shipping carton and packing material for future use  
and transport.  
The design team at Cambridge SoundWorks believes there is  
no better combination of audiophile-level attention to detail and  
reasonable cost.  
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Inspecting For Damage  
Examine each part carefully for shipping damage. If there is any,  
do not install or use the speaker. Return the speaker to the merchant  
where you made the purchase or call Cambridge SoundWorks at  
1-800 FOR-HIFI (1-800-367-4434) for assistance.  
System Configuration  
For the best performance, a Cambridge SoundWorks HD series  
in-wall or freestanding loudspeaker should be used on all channels of  
the surround-sound system. You may freely mix and match the main  
and surround speaker pairs within the series with good results.  
Both models covered in this manual are intended for use in systems  
that contain one or more subwoofers, and is not designed to  
reproduce the deep bass range. Use a receiver or AV processor that  
incorporates a high-pass crossover whenever possible.  
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Speaker Placement  
Placement of the speakers affects how well the AV surround system  
recreates the sound field intended by the recording engineer. Current  
recording practice typically assumes a speaker array with a center channel  
speaker directly in front of the central viewing position, and with left and right  
speakers placed so they each form a 30 degree angle from the center line.  
Left and right surround speakers are placed 110 degrees from the center line.  
Left and right rear speakers in a 7.1 system are typically at 140 degrees. If  
a single rear speaker is used in a 6.1 system, it should be centered on the  
rear wall. Front speakers should be as close to the height of the TV monitor  
as practical. Surround and rear speakers should be slightly higher. The best  
recreation of the desired sound field is achieved by recreating this speaker  
pattern as closely as your room and furnishings allow.  
RECOMMENDED HOME  
THEATER SETUP  
MAIN SPEAKERS  
MAIN  
SPEAKER  
MAIN  
SPEAKER  
CENTER CHANNEL  
LEVEL  
WITH  
CENTER  
SPEAKER  
SURROUND  
SPEAKER  
SURROUND  
SPEAKER  
Don’t be too concerned if your situation and listening environment dictate  
somewhat different speaker positions. Most rooms do not allow ideal  
placement. Place your speakers as close to these guidelines as practical and  
the speakers will still provide convincing, lifelike sound.  
POWERED  
SUBWOOFER  
7.1 REAR  
SPEAKER  
7.1 REAR  
SPEAKER  
Your surround processor has a variety of adjustments to optimize the sound  
based on the speakers’ capabilities and placement. These adjustments vary  
by processor, so refer to your processor’s manual for instructions specific to  
your equipment. Set your main, center, and surround settings to “SMALL”,  
with subwoofer “ON”.  
• Avoid placing front left and right speakers very close to a side wall (within  
12-14 inches). The reflected sound from the wall degrades the sound coming  
directly from the speaker.  
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Wiring The Speakers  
Run the wires to their final positions prior to mounting the speakers.  
The spring loaded terminals accept bare wire between AWG #12 and  
AWG #18 (lower numbers are thicker). It is not necessary to “tin” the  
wire or use connectors to terminate the wire. They will also accept  
individual banana plugs.  
Use at least AWG #18 speaker cable for short runs (under 15  
feet). Use AWG #16 or heavier speaker cable for longer runs.  
Building codes typically require plenum rated wire for installation  
within walls. Be sure to use wire that complies with any  
applicable local building codes. Plenum rated cable typically has  
an outer jacket with individually insulated conductors inside the  
outer jacket.  
Preparing The Wires  
1.  
Strip 1/2 inch of insulation from the two individual  
Strip 1/2 inch  
conductors in the speaker cable. Twist the exposed strands of bare  
wire together. It is not necessary to terminate the wires with pins or  
banana plugs, but you may do so if you wish.  
2.  
Determine which conductor you will use to connect the  
positive terminals of the amplifier and speaker together. Printing  
or a ridge on the insulation usually distinguishes one of the two  
conductors. Sometimes the metal of the conductors has two different  
colors, or the insulation color of each conductor may be different.  
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Speaker Mounting  
The HD series speakers may be mounted without any specialized brackets or back boxes. The enclosed design of the speakers makes them insensitive to  
the environment behind the wall, so no insulation or specific acoustic treatment is required. Extruded aluminum clamp rails along each side of the enclosure  
provide secure mounting directly to the wall material and are suited to both new and old construction.  
Before cutting into the wall, you must locate the wall studs using either a stud finder or by locating the screws in new construction. Locate the center of each  
stud and locate your speaker cutout so the nearest edge of is at least 1-3/4” away from the stud center. Installing the MC650-iw horizontally as a center-  
channel speaker will require cutting through at least one wall stud. The MC630-iw may be mounted without cutting through any studs if it is carefully located.  
When cutting a stud cannot be avoided, be certain to keep the cut stud between the clamp rail grips on the speaker. This dimension is 10.16 inches on the  
MC630-iw and 9.13 inches on the MC650-iw. We recommend locating the TV after you have determined the speaker location so that the TV and center-  
channel speaker share the same centerline.  
Once you have determined the area occupied by the wall studs, remove the center section of the template/paint mask. Tape the outer ring of the template to  
the wall where you want your cut to be and trace around the inside perimeter. Make your cut carefully along this line and remove the center.  
Remember to keep the edge of the cutout adjacent to the nearest stud at least 1-3/4” away from the center of the stud when mounting the  
speakers vertically.  
Horizontal Installation Example  
Screwdriver  
Grille  
MC630-iw = 10.16”  
MC650-iw = 9.13”  
Clamp Grip  
Clearence  
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Speaker Mounting (continued)  
Vertical Installation Example  
A
Screwdriver  
Grille  
After making the wire connection, carefully insert the speaker into the  
cutout by first angling in one side so that the wall is sandwiched between  
the aluminum clamp rail and the front bezel. Maneuver the other side clamp  
through the hole and center the speaker within the cutout. Tighten the clamp  
screws firmly using a Phillips head screwdriver.  
As you tighten the clamp screws, the aluminum clamp rails will secure the  
speaker as shown in the above drawings.  
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Painting  
Warning About Excessive  
Amplifier Distortion  
Operating a receiver (of any power rating) beyond its maximum undistorted  
output level creates distortion – added high frequency sound not part of the  
musical program. Distortion dramatically increases the internal operating  
temperature of a speaker and will eventually cause the speaker’s failure due  
to burned or melted internal parts. While Cambridge SoundWorks includes  
the most heat-tolerant parts commensurate with good acoustic design, the  
speaker’s Limited Warranty against defects in materials or workmanship does  
not apply to parts that fail from long-term operation at very high temperatures.  
The grille and frame of the speakers may be easily painted to match your  
décor. It is best to paint the frame and grille separately. Remove the speaker  
grille and use the paint mask (the center section from the cutout template)  
to protect the drivers and baffle. Paint the grille separately and let it dry  
completely before reinstalling it.  
Automatic Tweeter Protection  
The HD series speakers can be safely used with any receiver rated above  
20 watts per channel. There is little advantage in using more power than 100  
watts per speaker, but receivers above this power rating can be used so long  
as the receiver is not operated at distorted levels.  
To protect the tweeter, a self-resetting circuit breaker is incorporated into the  
crossover network. If the speaker is overpowered for an extended period,  
this circuit breaker will open and the tweeter will be disconnected. When  
the volume is reduced or the overload has passed, the circuit will reset and  
normal operation will be restored.  
Enclosure Cleaning  
The speaker grilles and exposed rim can be cleaned with a soft, damp cloth  
or mild cleaner.  
Brush or vacuum the grille panels with a soft brush attachment to your  
vacuum cleaner.  
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Specifications  
Dimensions:  
MC650-iw 20 1/2” H x 7 3/4” W x 3 7/8” D  
MC630-iw 14 3/4” H x 7 3/4” W x 3 7/8” D  
Weight:  
MC650-iw 12 pounds each  
MC630-iw 10 pounds each  
Impedance: nominal 8 ohms  
Recommended amplifier power range: 20W – 100W RMS per channel  
Frequency Range: 80Hz – 24kHz  
Woofer Type:  
MC650-iw 4 x 3-1/2” with molded composite cones and butyl-rubber surrounds  
MC630-iw 2 x 4” with molded composite cones and butyl-rubber surrounds  
Tweeter Type:  
¾” aluminum dome with ferrofluid-damping and neodymium magnet  
Crossover:  
MC650-iw 2-1/2 way, series-connected  
MC630-iw 2 way, series-connected  
Enclosure:  
Extruded aluminum with molded-composite baffle and end-caps  
In Case of Difficulty  
If you suspect there is a problem with your Newton HD  
loudspeaker, contact the retailer where it was purchased or a  
Cambridge SoundWorks Audio/Video Consultant, who will help  
you track down the problem. If together you agree there is  
something wrong with your Newton HD loudspeaker, return it to  
the retailer that sold it to you. Mail-order and Internet retailers  
will generally require a Return Authorization number. Products  
purchased from a Cambridge SoundWorks store, you may  
call us for a factory Return Authorization. Do not return the  
Newton HD loudspeaker or any parts without first obtaining  
a Return Authorization.  
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Dimensions  
MC650-iw  
MC630-iw  
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120 Water Street  
North Andover, MA 01845  
(800) FOR-HIFI  
(1-800-367-4434)  
P81-2450  
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