Bose 301 Sonata Руководство пользователя - Страница 8
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RIGHT
CHANNEL
OUTPUT
LEFT
CHANNEL
OUTPUT
gg
DIAGRAM 5
>
CONNECTIONS FOR MAINTAINING
CORRECT PHASING OF SPEAKERS
B. Connecting the Speakers
1. POWER
REQUIREMENTS
The
Model
301
is designed to be
powered
by the majority of the fine amplifiers and receivers that
are on the market today. Power
requirements will vary substan-
tially with room size, speaker placement, and type of music played.
High quality sound
requires less than 10 watts rms per channel,
although amplifiers rated up to 60 watts rms per channel may be
used.
2. WIRE SELECTION
If the wires to your speakers are less than
30 feet long,
18-gauge
zipcord
(two-conductor)
wire is recom-
mended.
If 30- to 50-foot lengths of wire are needed, 16-gauge
two-conductor wire should be used.
If your dealer doesn't provide you with speaker wire, it can be ob-
tained at most hardware stores.
Choosing the correct wire size insures that the wire connecting
your speakers doesn't
have too much
resistance.
Excessive
re-
sistance causes audible coloration and loss of power with all speak-
ers.
3. PHASING
It is important that the connections to the speakers
and the receiver or amplifier be the same for both channels so
that the two speakers are in phase with each other.
Refer to Diagram 5 as you do the following steps:
1. Start with the speaker marked "Part 1".
2. Place it on the left side of your room.
3. Locate
the "POS"
and
"COM"
terminals
on
the rear of the
speaker.
4. Using your speaker wire, which
is marked
to distinguish one
conductor from the other by means of color or grooved ridges,
connect
the terminal
marked
"COM"
on the back of the left
speaker to the terminal
marked
"COM,"
"negative" or (-), on
the left channel amplifier output."
5. Connect the "POS" terminal on the left speaker to the terminal
marked
"POS," "positive" or (+), on the left channel output of
the amplifier or receiver.
6. Place the speaker marked "Part 2" on the right-hand side of the
room and repeat the connection procedure.
4. FUSING
When
using the Model 301 with amplifiers rated at
more than 60 watts rms per channel, or with sinusoidal or other
test signals, we recommend
that the speaker be protected
by a
BUSS
MDL
1%-amp
"slow-blow"
fuse
(or equivalent)
using an
in-line HDH fuseholder (or equivalent) wired in series on the posi-
tive side of each
speaker cable. The fuse will also provide pro-
tection against speaker damage in the event of amplifier failure.
"When connecting to your amplifier, if there is a choice of imped-
ances on the amplifier output, use the terminal marked "8" or "8
ohms." If two pairs of Model 301s are being connected in parallel,
the terminal marked "4" or "4 ohms" on the receiver or amplifier
should be used.