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If this product doesn't work as expected, look for a possible cause below. If the issue you are experiencing is not listed, or you cannot

resolve it after reading through these instructions, disconnect the power cable and contact an authorized Yamaha dealer or service

center.

Issue

There's no sound.

The sound is very quiet.

■ Subwoofer (NS-SW280)

Issue

The POWER switch is set to ON but

the subwoofer doesn't work.

There's no sound.

The subwoofer is too quiet.

■ Surround speakers (NS-B285)

Type........................................... Full-range acoustic-suspension

Driver............................................ 6.5 cm (2-1/2") cone speaker

Nominal input power ......................................................... 30 W

Maximum input power ...................................................... 80 W

Impedance ............................................................................... 6 Ω

Frequency response........................................... 110 Hz–40 kHz

Sensitivity ........................................................81 dB/2.83 V, 1 m

Dimensions (W × H × D)

90 × 90 × 109 mm (3-1/2" × 3-1/2" × 4-1/4")

90 × 120 × 123 mm (3-1/2" × 4-3/4" × 4-7/8")

Weight........................................0.45 kg (1 lbs.) (without stand)

■ Front/center speaker (NS-BR300)

Type........................................... Full-range acoustic-suspension

Driver....................... 4 × 10 cm (1-1/2 × 4 in) cone speaker ×3

Frequency response........................................ 150 Hz to 20 kHz

Impedance ............................................................................... 6 Ω

Dimensions (W × H × D)

NS-BR300 ........... 800 × 50 × 70 mm (31-1/2" × 2" × 2-3/4")

Stand................. 45 × 70 × 88 mm (1-3/4" × 2-3/4" × 3-1/2")

Weight...................................................................... 1.5 kg (3 lbs.)

Troubleshooting

Possible cause

The speaker cables are not

connected properly.

The speaker cables are not

connected properly.

Possible cause

The power cable is not connected

properly.

The VOLUME control is set to 0. Turn up the VOLUME control.

The subwoofer cable is not

connected properly.

The source material doesn't

contain much bass.

Bass sounds are being cancelled

out by standing waves.

Specifications

non-magnetic shielding type

(without stand)

(with stand)

non-magnetic shielding type

Make sure the speaker cables are connected properly.

Make sure the speaker cables are connected properly:

L (left) to L, R (right) to R, "+" to "+" and "–" to "–".

Set the POWER switch to OFF, then make sure the power

cable is connected properly.

Make sure the subwoofer cable is connected properly.

Try playing source material that contains more bass.

Reposition the subwoofer, or break up parallel wall surfaces

by placing bookshelves or other large objects along the wall.

■ Subwoofer (NS-SW280)

Type ........................ Advanced Yamaha Active Servo Technology

Driver...............................................16 cm (6-1/2") cone woofer

Output power........................ 50 W (100 Hz, 5 Ω, 10% T.H.D.)

Dynamic power ......................................................... 100 W, 5 Ω

Input impedance....................INPUT (1P RCA pin jack): 10 kΩ

Frequency response .............................................30 Hz–160 Hz

Input sensitivity............................. INPUT (1P RCA pin jack):

Power supply

U.S.A. and Canada models ...........................AC 120 V, 60 Hz

Australia model..............................................AC 240 V, 50 Hz

U.K. and Europe models...............................AC 230 V, 50 Hz

Dimensions (W × H × D) ........................262 × 264 × 316 mm

Weight................................................................. 6.9 kg (15.2 lbs.)

Specifications are subject to change without notice.

Remedy

non-magnetic shielding type

80 mV (50 Hz, 50 W/5 Ω)

(10-3/8" × 10-3/8" × 12-1/2")