compactreferenceserie sbostonacoustics

B O S T O N
C O M PA C T
A C O U S T I C S
R E F E R E N C E
S E R I E S
T H E
C O M PA C T
R E F E R E N C E
S E R I E S
The Compact Reference Series incorporates the highest quality materials, the latest acoustic technology, and new
state-of-the-art molding techniques, and are capable of unusually high performance. These speakers are fully
compatible with home theater systems. Each model features MagnaGuard® magnetic shielding. This ensures the
speaker ‘s magnetic field will not distort the TV‘s image or damage the picture tube, allowing placement next to a
television or computer monitor.
H O W
T O
C O N N E C T
Y O U R
S P E A K E R S
Correctly wiring your speakers is important for achieving the best sound quality and a rich stereo image. Wiring
should take just a few minutes, but it‘s important to do it carefully, since incorrect wiring (such as reversed
connections) can result in a poor stereo soundstage or poor bass.
We recommend 18 gauge wire or thicker for runs up to 25 feet (8 meters) and 16 gauge wire or thicker for longer
runs. Separate the first few inches of the wire conductors. Strip off 1/2 -inch (12mm) of insulation from the ends of each
speaker wire to expose the two conductors and tightly twist the wire strands.
Warning: To prevent electrical shock hazard, always switch off the amplifier or receiver when making connections to
the speaker.
Using the five-way
Important: Typically, one side of
binding posts: The
the wire is smooth. Connect this
binding posts permit
side to the – (black) connection.
easy connection to
The other side has a rib or stripe.
banana plugs, spade
Connect this to the + (red)
lugs, and bare wire.
connection.
The metal surfaces are
plated with 24k gold
to prevent corrosion.
Insert the wire into the hole and tighten.
Boston
Boston
H O O K U P
When making all connections, be sure to connect + to +
(red) and – to – (black). Connect the speaker terminals to
the amplifier speaker outputs.
Back of amplifier or receiver
C H E C K I N G
T H E
C O N N E C T I O N S
It is critical that your speakers are hooked up with similar polarity or “in phase.” A simple listening test will tell you if
the speakers are connected properly. Place the speakers face-to-face, as close as possible. While listening to music
with your amplifier set to MONO, reverse the connections at one speaker only. You’ll hear a dramatic change in
sound. The connection that yields the fuller bass and louder sound is the correct one.
R O O M
P L A C E M E N T
F O R
B E S T
R E S U LT S
Room placement is one of the most important factors in determining sound quality. Taking a few minutes to try different
placements ensures that your speakers will sound best in your listening environment.
For a realistic soundstage, place the speakers 6 to 12 feet (2-4m) apart so they form a triangle with your favorite
listening position, and are near ear level when you are in a seated position. The speakers should be at least 2 feet (.6m)
from the corners of the room. Putting the speakers too close to a corner can produce an unnatural bass reinforcement that
detracts from their balanced, uncolored sound. If a speaker must be placed near a corner, move it away from the wall
behind it to preserve its natural tonal balance.
The CR Series will work well on bookshelves or stands. For best results, avoid placing the speaker’s back flush against
a wall, since this will restrict the air flow from the port and reduce the bass response. Clearance of 1/2 - inch (12mm) or more
is sufficient to maintain proper bass response.
Four self-adhesive rubber feet are provided to protect the mounting surface finish and prevent vibration.
WA L L
M O U N T I N G
S P E A K E R S
approximately 1/2-inch (12mm)
Y O U R
You may wall-mount the CR6 and CR7 with either the keyhole built into the back
panel or the optional CRB bracket.
Using the keyhole– Consult a knowledgeable installer regarding the proper
hardware to use on your wall surface. Make certain there is at least a 1/2 - inch
(12mm) gap between the top rear of the speaker cabinet and the wall behind it.
This will ensure the speaker is the proper distance from the wall to maintain
unrestricted air flow from the woofer port.
Using the optional CRB bracket– Wall mounting brackets (model ”CRB”)
are available for the CR6 and CR7. The brackets provide greater mounting
flexibility than the keyhole and will position the speaker the proper distance from
Self-adhesive rubber feet prevent
marring of the walls surface
the wall. For more information, contact your dealer or Boston Acoustics directly.
L I S T E N I N G
L E V E L S
A N D
P O W E R
H A N D L I N G
The power recommendation for the Compact Reference Series assumes you will operate the amplifier in a way that will not
produce distortion. Even these rugged systems can be damaged by an amplifier if it is producing distortion.
If you hear a harsh, gritty noise, turn the volume down. Prolonged or repeated operation of your speaker with a
distorted signal from the amplifier can cause damage that is not covered by the warranty.
S P E C I F I C AT I O N S
CR6
CR6
Frequency Response (±3 dB)
CR7
CR8
CR7
CR9
CR8
CR9
65-20,000 Hz
52-20,000 Hz
48-20,000 Hz
42-20,000 Hz
Recommended Amplifier Power 15-100 watts
15-100 watts
15-125 watts
15-150 watts
8 ohms
8 ohms
8 ohms
88 dB
88 dB
90 dB
91 dB
5 /4" (135mm)
6 /2" (165mm)
7" (180mm)
8" (200mm)
Nominal Impedance
8 ohms
Sensitivity [1 watt (2.83V) at 1m]
Bass Unit
Tweeter
1
/4" (19mm) dome
3
Crossover Frequency
Dimensions
Weight
1
/4" (19mm) dome
3
3500 Hz
2800 Hz
1" (25mm) soft dome 1" (25mm) soft dome
3300 Hz
3300 Hz
12 /4 x 7 /2 x 9 /8"
5 x 8 /2 x 10 /2"
10 /8 x 5 /8 x 7 /8 "
(257 x 149 x 200mm) (311 x 191 x 232mm) (381 x 216 x 267mm)
1
7
7
71/2 lbs (3.4kg)
1
1
1
11 lbs (5kg)
1
1
16 lbs (7.3kg)
9 /2 x 93/4 x 113/8"
(495 x 248 x 289mm)
1
21 lbs (9.5kg)
Limited Warranty
If Service Seems Necessary
For five years from the date of
First, contact the retailer from whom you purchased the speakers. If that is
purchase, Boston Acoustics will repair
not possible, call us at 978-538-5000, or write to:
for the original owner any defect in
Boston Acoustics, Inc., 300 Jubilee Drive, Peabody, MA 01960.
materials or workmanship that occurs
in normal use of the speaker, without
Send us:
charge for parts and labor.
1. Your name, address, and daytime telephone number.
2. The speaker system’s serial number.
Your responsibilities are to use the
product according to the instructions
3. Details on when and where you purchased the speaker(s) and a copy of
your sales slip.
supplied, to provide safe and secure
4. Makes/models of your signal sources and amplifier.
transportation to an authorized
5. Description of the problem.
Boston Acoustics service
6. Whether you have the original cartons and fillers or need new ones.
representative, and to present proof
of purchase in the form of your sales
We will promptly advise you of what action to take. If it is necessary to return
slip when requesting service.
your speaker to the factory, please ship it prepaid. After it has been repaired,
we will return it freight prepaid in the U.S. and Canada.
Excluded from this warranty is
damage that results from abuse,
misuse, accidents, shipping, repairs,
or modifications by anyone other
than an authorized Boston Acoustics
service representative. This warranty
is void if the serial number has been
removed or defaced.
This warranty gives you specific legal
rights, and you may also have other
rights which vary from state to state.
300 Jubilee Drive
Peabody, MA 01960
978.538.5000
Boston, Boston Acoustics, and MagnaGuard are registered trademarks of Boston Acoustics, Inc. Specifications are subject to change without notice. ©1994 Boston Acoustics, Inc.
42-531-0