Bose 301 Sonata Manuale d'uso - Pagina 8

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RIGHT

CHANNEL

OUTPUT

LEFT

CHANNEL

OUTPUT

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

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.