NS-777 - Loudspeaker YAMAHA - Free user manual and instructions

Product type	Bookshelf/column speaker
Brand	Yamaha
Model	NS-777
Dimensions (W x H x D)	220 x 1000 x 320 mm
Weight	Approximately 20 kg
Nominal impedance	8 ohms
Sensitivity	90 dB (2.83V, 1m)
Frequency response	30 Hz - 40 kHz (-10 dB)
Power handling (RMS)	200 W
Peak power	400 W
Speaker configuration	3-way, bass-reflex
Number of speakers	4 (2 woofers, 1 midrange, 1 tweeter)
Woofer diameter	2 x 16 cm (7 inches)
Midrange diameter	1 x 13 cm (5 inches)
Tweeter diameter	1 x 2.5 cm (1 inch) soft dome
Main functions	High-fidelity sound reproduction, stereo listening, home theater adaptation
Maintenance and cleaning	Clean with a soft, dry cloth; avoid chemicals and moisture
Safety	Do not expose to water, do not open the cabinet, keep away from heat sources
Spare parts and repairability	Contact Yamaha after-sales service for any parts or repairs

Frequently Asked Questions - NS-777 YAMAHA

How to connect Yamaha NS-777 speakers to an amplifier?

Use quality speaker cables. Connect the red (+) terminals of the speaker to the red terminals of the amplifier, and the black (-) terminals together. Tighten banana plugs or spades firmly.

What is the impedance of the NS-777?

Nominal impedance is 8 ohms, compatible with most Hi-Fi and home theater amplifiers.

Can I use the NS-777 in a home theater?

Yes, these speakers are ideal as front (left/right) speakers in a home theater system. Their extended frequency response and power make them suitable for sound effects.

How to clean the grilles and cabinet?

Remove the grilles if possible. Clean the grilles with a vacuum cleaner (soft brush) and the cabinet with a slightly damp microfiber cloth. Avoid any chemical products that could damage the finish.

What amplifier power do you recommend?

An amplifier of 50 to 200 W RMS per channel is recommended to fully exploit the NS-777 without risk of saturation.

Are the NS-777 shielded against magnetic interference?

No, these speakers are not shielded. Do not place them in immediate proximity to a CRT television or a screen sensitive to magnetic fields.

How to optimize the placement of the NS-777?

Place them at least 20 cm from the back wall, tweeters at ear height. Separate them by 2 to 3 meters from each other for a good soundstage. Avoid corners.

What to do in case of distortion?

First check the amplifier level: reduce it. If distortion persists, ensure that the cables are properly connected and that the load impedance is correct. A too weak amplifier can also cause distortion.

Is there a protection fuse?

The NS-777 do not have an internal fuse. Protection is provided by the amplifier. In case of overload, the amplifier may shut down automatically.

Are the grilles removable?

Yes, the grilles are attached by magnets or pins. Gently pull forward to remove them. Put them back after cleaning.

USER MANUAL NS-777 YAMAHA

Thank you for selecting a YAMAHA speaker system.

PRECAUTIONS

Read these precautions carefully before using your speakers.

• To assure the finest performance, please read this manual carefully. Keep it in a safe place for future reference.
  • Install the speaker in a cool, dry, clean place - away from windows, heat sources, sources of excessive vibration, dust, moisture and cold. Avoid sources of humming (transformers, motors). To prevent fire or electrical shock, do not expose the speaker to rain or water.
• To prevent the enclosure from warping or discoloring, do not place the speaker where it will be exposed to direct sunlight or excessive humidity.
• Do not place the following objects on the speaker: Glass, china, small metallic, etc. If glass etc. falls by vibrations and breaks, it may cause bodily injury.
  A burning candle etc.
  If the candle falls by vibrations, it may cause fire and bodily injury.
  A vessel with water in it
  If the vessel falls by vibrations and water spills, it may cause damage to the speaker, and/or you may get an electric shock.
• Do not place the speaker where foreign objects such as water drips might fall. It might cause a fire, damage to the speaker, and/or bodily injury.
• Do not place the speaker where it is liable to be knocked over or struck by falling objects. Stable placement will also ensure better sound performance.
• Placing the speaker on the same shelf or rack as the turntable can result in feedback.
• Never put a hand or a foreign object into the port located on the rear of the speaker as this might cause bodily injury and/or damage to the speaker.
• When moving the speaker, do not hold the port as it might cause bodily injury and/or damage to the speaker.
• Any time you note distortion, reduce the volume control on your amplifier to a lower setting. Never allow your amplifier to be driven into “clipping”. Otherwise 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 when any service is needed. The cabinet should never be opened for any reasons.

• Secure placement or installation is the owner's responsibility. YAMAHA shall not be liable for any accident caused by improper placement or installation of speaker.

PRECAUTIONS WHEN POSITIONING THE SPEAKERS

The speaker is constructed with the majority of the weight located in its upper portion, and is thus susceptible to falling over if proper care is not taken to insure its stability. If the speaker falls over, it may damage the speaker or be the cause of injury (or even death) to persons and/or damage to personal property.

For safe and proper use of the speaker:

• Position the speaker in a location that is solid, level, smooth, and low (with respect to the floor).
• Do not push or apply pressure to the side of the speaker when moving, or lean objects against the side of the speaker.
• Do not sit on or set objects on top of the speaker.

Vibrations or jolts associated with earthquakes and other phenomena or activities may cause the speaker to fall over.

For safety reasons, using commercially available products that increase stability in the speaker is recommended (metal fittings or chains, etc.).

Use the stands included with the speaker to increase stability:

Be sure to use the stands regardless of where the speaker is positioned. Attaching the stands included with the speaker reinforces the base of the speaker not to fall over.

Please be cautioned that even though the stands are connected, this does not guarantee that the speaker will not fall over.

ATTACHING THE STANDS

When placing the speakers, be sure to use the stands to increase stability.

Note

The provided stands are in two types. Two stands are for the right side and others are for the left side. Attach each stand to the proper position on the bottom of the speaker by following the figure below.

View from the bottom of the speaker

Use the 8 specified holes located on the base of the speaker.

Procedure:

①First, put the screw through the washer, then through the inner hole of the stand, and screw it into the outside hole of the speaker. Do not tighten too much at this point.

②Put a screw through the outer hole on the stand, and screw it into the other hole on the base of the speaker.

③Tighten both of the screws firmly.

④Attach a pad to the bottom of the end portion of the stand.

⑤Attach 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 careful not to apply force to the side of the speaker, otherwise the speaker may fall causing damage to the speaker or personal injury.

CONNECTIONS TO YOUR AMPLIFIER

This speaker system is capable of standard connections and bi-wired connections. Before making connections, make sure that the amplifier is switched off.

[Standard Connection]

■ CONNECTIONS

• Connect the screw-type input terminals at the rear of the speaker to the speaker output terminals of the amplifier (or receiver) with the speaker cable.
• Connect the (+) terminals on the amplifier (or receiver) and the speaker using one side of the cable. Connect the (−) terminals on both components using the other side of the cable.
• Connect one speaker to the left (marked L) terminals of your amplifier, and another speaker to the right (marked R) terminals, making sure not to reverse the polarity (+, -). If one speaker is connected with reversed polarity, the sound will be unnatural and lack bass.

How to Connect:

①Remove the insulation coating at the extremity of each speaker cable by twisting the coating off.

②Loosen the terminal knob.
③Insert the bare wire.
④Tighten 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 other to avoid damaging the speaker or the amplifier, or both of them.

Using a Banana Plug

① Tighten the terminal knob.
②Simply insert the banana plug into the terminal.

[Bi-Wired Connection]

This speaker system is capable of bi-wired connections. To connect the speaker to the output terminals of the amplifier (or receiver), two pairs of cables for each of mid-woofer/woofer and tweeter used instead of standard connections.

This type of connection decreases the modulation distortion caused by electric resistance of the cables and driving current of the speakers. Consequently, purer sound quality can be expected.

To utilize bi-wired connections, remove the short bars from the terminals first, and then connect the mid-woofer/woofer and tweeter to the amplifier separately using two pairs of cables.

Place the speakers on a sturdy, vibration-free surface, on a well-built stand.

■ Using as 2ch stereo speakers

Better stereo images will be obtained 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 speaker features a magnetically shielded design, but there is still a chance that placing it too close to a TV set might impair picture color. Should this happen, move the speaker away from the TV set.

REMOVING THE FRONT COVER

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.

SPECIFICATIONS

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.

Information for users on collection and disposal of old equipment:

This symbol on the products, packaging, and/or accompanying documents means that used electrical and electronic products should not be mixed with general household waste.

For proper treatment, recovery and recycling of old products, please take them to applicable collection points, in accordance with your national legislation.

By disposing of these products correctly, you will help to save valuable resources and prevent any potential negative effects on human health and the environment which could otherwise arise from inappropriate waste handling.

For more information about collection and recycling of old products, please contact your local municipality, your waste disposal service or the point of sale where you purchased the items.

For business users in the European Union:

If you wish to discard electrical and electronic equipment, please contact your dealer or supplier for further information.

Information on Disposal in other Countries outside the European Union:

This symbol is only valid in the European Union. If you wish to discard these items, please contact your local authorities or dealer and ask for the correct method of disposal.

Patins x 4

Remarque

Remarque

Dimensions (L x H x P)

276 mm x 1100 mm x 390 mm

Poids 24,4 kg

Accessoires....Pied (D x 2, G x 2)

Rondelle x 4

Vis x 8

Patins x 4

NS-555

Dimensions (L x H x P) .....222 mm x 980 mm x 345 mm

Poids.... 20 kg

Accessoires....Pied (D x 2, G x 2)

Rondelle x 4

Vis x 8

Patins x 4

Hinweis

FÖRSIKTIGHETSÄTGÄRDER NÄR HÖGTALARNA SKA SÄTTAS PÅ PLATS

Obs!

[Bi-wired anslutning]

HÖGTALARNAS PLACERING

Nota

Nota

[Collegamento bi-wire]

Dimensioni (L x A x P)

276 mm x 1100 mm x 390 mm

Peso....24,4 kg

Accessori.... Supporto (D x 2, S x 2)

Rondella x 4

Vite x 8

Cuscinetto x 4

NS-555

Accessori.... Supporto (D x 2, S x 2)

Rondella x 4

Vite x 8

Cuscinetto x 4

Almohadilla x 4

Nota

Nota

Kussen x 4

Opmerking

Opmerking

Accessoires ....Steun (R x 2, L x 2)

Ring x 4

Schroef x 8

Kussen x 4

NS-555

Accessoires ....Steun (R x 2, L x 2)

Ring x 4

Schroef x 8

Kussen x 4

为了安全和正确地使用扬声器：

注意

■ 作为多声道系统主置扬声器使用

敏感度....89 dB/2.83 V/m

交换频率....1 kHz, 4 kHz

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

https://download.yamaha.com/

Manual Development Group

© 2019 Yamaha Corporation

Published 07/2019发行 IPEI-A0

VDG0330