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The front cover is fastened to the enclosure at six points 
and can be removed if desired. To remove the cover, hold 
on to both sides and slowly pull straight away from the 
speaker. To reattach, line up the six pegs on the inside 
surface of the cover with the six corresponding holes on the 
speaker and push gently.

Note

When the cover is removed, take care not to touch the speaker 
units with your hands or to exert excessive force with tools.

NS-777

Type ............................. 3-way bass reflex speaker system

Magnetic shielding type

Driver .....................................20 cm (8") cone woofer x 2

Wave guide horn 13 cm (5") cone mid-range

Wave guide horn 2.5 cm (1") dome tweeter

Frequency response.................................. 30 Hz – 35 kHz
Nominal impedance ............................................... 6 ohms
Nominal input power .............................................. 100 W
Maximum input power ........................................... 250 W
Sensitivity ................................................89 dB/2.83 V/m
Crossover frequency .................................... 1 kHz, 4 kHz
Dimensions (W x H x D)

......................................... 276 mm x 1100 mm x 390 mm

(10.9" x 43.3" x 15.4")

Weight...........................................24.4 kg (53 lbs. 13 oz.)
Accessories ........................................Stand (R x 2, L x 2)

Washer  x 4

Screw x 8

Pad x 4

NS-555

Type ............................. 3-way bass reflex speaker system

Magnetic shielding type

Driver ..................................16 cm (6.5") cone woofer x 2

Wave guide horn 13 cm (5") cone mid-range

Wave guide horn 2.5 cm (1") dome tweeter

Frequency response.................................. 35 Hz – 35 kHz
Nominal impedance ............................................... 6 ohms
Nominal input power .............................................. 100 W
Maximum input power ........................................... 250 W
Sensitivity ................................................88 dB/2.83 V/m
Crossover frequency .................................... 1 kHz, 4 kHz
Dimensions (W x H x D) ... 222 mm x 980 mm x 345 mm

(8.74"x 38.6" x 13.6")

Weight...................................................... 20 kg (44.1 lbs)
Accessories ........................................Stand (R x 2, L x 2)

Washer  x 4

Screw x 8

Pad x 4

• Specifications subject to change without notice due to 

product improvements.

• Care should be taken not to exceed the input power 

values noted above.

REMOVING THE FRONT COVER

NS-777

NS-555

SPECIFICATIONS

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Summary of Contents for NS-555

Page 1: ...erwise the speaker may be damaged When using an amplifier with a rated output power higher than the nominal input power of the speaker care should be taken never to exceed the speaker s maximum input Do not attempt to clean the speaker with chemical solvents as this might damage the finish Use a clean dry cloth Do not attempt to modify or fix the speaker Contact qualified YAMAHA service personnel ...

Page 2: ...oo much at this point 2 Put a screw through the outer hole on the stand and screw it into the other hole on the base of the speaker 3 Tighten both of the screws firmly 4 Attach a pad to the bottom of the end portion of the stand 5 Attach the other stands to the other corners of the base of the speaker in the same way and confirm that all 4 stands have been firmly attached Note Be carefull not to a...

Page 3: ... reversed polarity the sound will be unnatural and lack bass How to Connect 1 Remove the insulation coating at the extremity of each speaker cable by twisting the coating off 2 Loosen the terminal knob 3 Insert the bare wire 4 Tighten the knob and secure the cable Test the firmness of the connection by pulling lightly on the cable at the terminal Note Do not let the bare speaker wires touch each o...

Page 4: ...when the speakers are slightly angled in towards the listeners Using as main speakers in a multi channel system Position the speakers on both sides of the TV The positioning of speakers is important because it controls the whole sound quality of a multi channel system Set up the speakers on the basis of your listening position by following the owner s manual supplied with your amplifier Note This ...

Page 5: ...Sensitivity 89 dB 2 83 V m Crossover frequency 1 kHz 4 kHz Dimensions W x H x D 276 mm x 1100 mm x 390 mm 10 9 x 43 3 x 15 4 Weight 24 4 kg 53 lbs 13 oz Accessories Stand R x 2 L x 2 Washer x 4 Screw x 8 Pad x 4 NS 555 Type 3 way bass reflex speaker system Magnetic shielding type Driver 16 cm 6 5 cone woofer x 2 Wave guide horn 13 cm 5 cone mid range Wave guide horn 2 5 cm 1 dome tweeter Frequency...

Page 6: ...B 2 83 V m 交换频率 1 kHz 4 kHz 尺寸 宽 高 深 276 mm 1100 mm 390 mm 重量 24 4 kg 附件 支架 右 2 左 2 垫圈 4 螺丝 8 防滑垫 4 NS 555 种类 3 声道低频反射式扬声器系统 磁屏型 驱动器 16 cm 圆锥低音扬声器 2 波导喇叭 13 cm 圆锥中型 波导喇叭 2 5 cm 穹型低音扬声器 频率响应 35 Hz 至 35 kHz 额定阻抗 6 欧姆 额定输入功率 100 W 最大输入功率 250 W 敏感度 88 dB 2 83 V m 交换频率 1 kHz 4 kHz 尺寸 宽 高 深 222 mm 980 mm 345 mm 重量 20 kg 附件 支架 右 2 左 2 垫圈 4 螺丝 8 防滑垫 4 产品规格若有变动 恕不另行通知 请注意输入功率值不要超过上述值 卸下前盖 NS 777 NS 555 规格 ...

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