Bowers & Wilkins CT700 Serie Bedienungsanleitung Für Die Installation Und Das Setup Seite 9

proximity with the speaker. Unlike full-range
speakers, however, the overall system balance can
be corrected by adjusting the volume level of the
subwoofer. The more boost gained from the room,
the lower the volume can be set and the less hard
the subwoofer has to work; but there is a down
side. Subwoofers positioned near corners often
generate more low-frequency room resonances,
making the bass more uneven with frequency. There
is no substitute for experiment as all rooms behave
differently, so the subwoofer should be tried in a
variety of positions before a final decision is made. A
piece of music with a bass line ascending or
descending the musical scale is useful for assessing
the smoothness of the bass response. Listen for
exaggerated or quiet notes.
Using multiple subwoofers in a single installation can
improve performance in the following ways:
• Maintains stereo separation to the lowest
frequencies.
• Smooth out the effects of low frequency room
resonances.
• Enable a higher maximum sound output.
In the case of two subwoofers used in a 2-channel
audio system, stereo separation will only be
improved if each channel has its own subwoofer
located close to the appropriate satellite speaker.
Stray Magnetic Fields
The subwoofer drive units create stray magnetic
fields that extend beyond the boundaries of the
cabinet. We recommend you keep magnetically
sensitive articles (CRT television and computer
screens, computer discs, audio and video tapes,
swipe cards and the like) at least 0.5m (20 in) from
the speaker. LCD and plasma screens are not
affected by magnetic fields.
Grilles
The CT SW Series subwoofers are fitted with
magnetically attached fabric grilles which may be
removed if desired. Take care not to damage the
drive units when removing or replacing the grilles.
Subwoofer Amplifier Installation
The SA1000 subwoofer amplifier is intended to be
installed in standard 19 inch equipment racks. It is
supplied with rack-mount ears but rack mount bolts
and nuts are not supplied. Ensure that, once
mounted in the rack, the amplifier is well ventilated
and that its ventilation apertures are not obstructed.
Rack Mounting the SA1000
The SA1000 is supplied with two rack mounting
brackets for installation in standard equipment
racks. To install these brackets:
Install the rack mount bracket, inserting three of the
small Philips head machine screws through the
bracket and the threaded holes in the side of the
amplifier.
Repeat for the bracket on the other side of the
amplifier.
SA1000 Rack Handles
The rack mount brackets are supplied with handles,
which can be installed or removed. The handles are
installed with two of the long Philips head machine
screws inserted through the rack mount bracket and
into the threaded holes in the handles. If you do not
use the handles, use the rubber hole plugs supplied
with the bracket hardware to fill the exposed holes.
Subwoofer Amplifier EQ Switch Settings
The SA1000 subwoofer amplifier is fitted with a
switch on the back to provide additional fine tuning
for the amplifier for the specific CT subwoofer it will
be driving. Simply put the switch at the position
indicating the CT subwoofer you are using. (Figure 5)
Subwoofer Amplifier Connections
The SA1000 subwoofer amplifier is fitted with a
variety of connection sockets on its rear panel:
1 x Mains input socket: Connect mains power using
the appropriate cable for your territory.
1 x Neutrik Speakon Output Socket: A four-pole
Speakon enabling connection of one or two
(identical) subwoofers. Speakon sockets provide a
more secure and reliable connection than bare-wire
or 4mm sockets.
4 x Binding Posts Outputs: Two pairs of binding
posts provide alternative bare-wire or 4mm socket
connection for one or two (identical) subwoofers.
2 x RCA Phono Inputs: Input sockets for connection
to an AV processor or preamplifier subwoofer or
stereo output.
1 x XLR Input: Alternative balanced input socket for
connection to an AV processor or preamplifier
subwoofer output.
2 x RCA Phono Outputs: Output sockets for
connection to the input of a second subwoofer
amplifier.
1 x XLR Output: Alternative balanced output socket
for connection to the input of a second subwoofer
amplifier.
2 x 3.5mm Jack Trigger Inputs: 12V trigger inputs to
enable automated control of amplifier standby and
movie/music function selection.
Connecting the subwoofer amplifier to the
subwoofer, including the use of Speakon plugs, is
covered in the Connecting Sections below.
Subwoofer Amplifier Controls
The SA1000 subwoofer amplifier front panel carries
the following controls.
Volume: Sets the overall volume of the subwoofer.
Filter: Sets the low-pass cut-off frequency of the
subwoofer filter.
Low-pass In/Out: Engages or defeats the subwoofer
filter.
Phase: Reverses the subwoofer output phase.
Bass Extension: Provides three bass extension options.
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