NS-8390 - Pregnant YAMAHA - Free user manual and instructions

Brand	Yamaha
Model	NS-8390
Product Type	Bookshelf Speaker
Dimensions (W x H x D)	200 mm x 300 mm x 250 mm
Weight	5.0 kg per speaker
Impedance	8 ohms
Frequency Response	50 Hz – 20 kHz
Sensitivity	88 dB (2.83 V, 1 m)
Power Handling (Nominal)	60 W
Power Handling (Peak)	120 W
Driver Configuration	2-way: 1 tweeter, 1 woofer
Enclosure Type	Bass reflex (ported)
Connectivity	Speaker wire terminals
Cleaning	Wipe with soft, dry cloth. Avoid solvents.
Safety	Place on stable surface; keep away from moisture.
Spare Parts Availability	Contact Yamaha authorized service centers.

Frequently Asked Questions - NS-8390 YAMAHA

What is the best placement for the Yamaha NS-8390 speakers?

Place speakers at ear level, away from walls to avoid bass boom. Keep at least 30 cm from rear wall.

Can I use these speakers with a subwoofer?

Yes, connect to an AV receiver with a subwoofer output for enhanced low frequencies.

How do I clean the Yamaha NS-8390?

Use a soft, dry cloth. For grilles, gently vacuum with a brush attachment. Avoid liquids.

What type of amplifier should I use?

Use a stereo amplifier or AV receiver rated between 20-100 W per channel at 8 ohms.

Are the speakers magnetically shielded?

No, keep them at least 30 cm away from CRT TVs or sensitive electronics.

Can I bi-wire these speakers?

No, the NS-8390 has a single pair of terminals. Use standard speaker wire.

What is the warranty period?

Typically 2 years from date of purchase. Check with your local Yamaha dealer.

How to troubleshoot no sound?

Check amplifier connections, speaker wire polarity, and ensure amplifier is on and not muted.

Can I mount these speakers on a wall?

They are not designed for wall mounting. Use sturdy speaker stands for best performance.

Where can I find spare parts?

Contact Yamaha customer service or an authorized service center for replacement drivers or grilles.

USER MANUAL NS-8390 YAMAHA

Thank you for selecting this YAMAHA NS-8390 speaker system.

PRECAUTIONS

Read this before using the speakers.

• To assure the finest performance, please read this manual carefully. Keep it in a safe place for future reference.
• Install the speakers 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 speakers to rain or water.
• To prevent the enclosure from warping or discoloring, do not place the speakers where they will be exposed to direct sunlight or excessive humidity.
• Do not place the following objects on the speakers:
  Glass, china, etc.
  If glass etc. falls by vibrations and breaks, it may cause personal injury.
  A burning candle etc.
  If the candle falls by vibrations, it may cause fire and personal injury.
  A vessel with water in it
  If the vessel falls by vibrations and water spills, it may cause damage to the speakers, and/or you may get an electric shock.

• Do not place the speakers where foreign objects such as water drips might fall. It might cause a fire, damage to the speakers, and/or personal injury.

• Do not place the speakers where they are liable to be knocked over or struck by falling objects. Stable placement will also ensure better sound performance.

• Placing the speakers on the same shelf or rack as the turntable can result in feedback.
• 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 speakers may be damaged.
• When using an amplifier with a rated output power higher than the nominal input power of the speakers, care should be taken never to exceed the speakers' maximum input.
• Do not attempt to clean the speakers with chemical solvents as this might damage the finish. Use a clean, dry cloth.
• Do not attempt to modify or fix the speakers. 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 speakers.

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.

Simple 3D warning symbol inside a circle, no text or numbers present

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 speakers to increase stability:

Be sure to use the stands regardless of where the speakers are positioned. Attaching the stands included with the speakers 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 speakers will not fall over.

ATTACHING THE STANDS

Stand x 8 (4 per one speaker)

Screw x 16 (8 per one speaker)

Pad x 8 (4 per one speaker)

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

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

Procedure:

① Put a screw through the hole on the stand, and screw it into the speaker at one of the holes on the base of the speaker.
At this time, screw it untightly so that the stand can still be moved.
② Put another screw through the other 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 careful not to apply force to the side of the speaker, otherwise the speaker may fall causing damage to the speaker or personal injury.

■ Using as 2ch stereo speakers

Better stereo images will be obtained when the speakers are slightly angled in towards the listeners.

Diagram of a person hanging from a container with two chairs above, connected by dashed lines (no text or symbols)

■ 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.

graph TD
    A["NS-8390"] --> B["Center"]
    B --> C["Effect L"]
    D["Subwoofer"] --> E["Effect R"]
    F["Power Supply"] --> G["Power Supply"]

Note

These speakers feature a magnetically shielded design, but there is still a chance that placing them too close to a TV set might impair picture color. Should this happen, move the speakers away from the TV set.

CONNECTIONS TO YOUR AMPLIFIER

BEFORE MAKING CONNECTIONS, MAKE SURE THAT THE AMPLIFIER IS SWITCHED OFF.

When using a banana plug

■CONNECTIONS

• Connect the screw-type input terminals at the rear of the speakers to the speaker output terminals of the amplifier (or receiver) with the provided speaker cables.
• One side of the speaker cable is red and the other side is black. Connect the (+) terminals on the amplifier (or receiver) and speakers using the red side. Connect the (−) terminals on both components using the black side of the cable.
• Connect each speaker making sure not to reverse the polarity (+, -). If the speaker is connected with reversed polarity, the sound will be unnatural and lack bass.

How to connect:

①Loosen the knob.
②Insert the bare wire. [Remove the insulation coating at the extremity of each speaker cable by twisting the coating off.]
③Tighten 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 as this could damage the speaker or the amplifier, or both of them.

① Remove the cover by pulling it toward you.
② Tighten the terminal knob.
③Simply insert the banana plug into the terminal.

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.

Illustration of hands installing or adjusting a door panel on a cabinet (no text or symbols visible)

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

Type .... 3-way 3-speaker bass-reflex speaker system Magnetic shielding type

Driver .... 20 cm (8") cone woofer 10 cm (4") cone mid-range 2.2 cm (7/8") balanced dome tweeter

Impedance 8 Ω

Frequency Response 35 Hz to 27 kHz

Nominal Input Power 70 W

Maximum Input Power 220 W

Sensitivity 89 dB/2.83 V/m

Crossover Frequency 4 kHz, 10 kHz

Dimensions (W x H x D) .... 262 x 920 x 266 mm (10-5/16" x 36-1/4" x 10-1/2")

Weight 11.7 kg (25 lbs. 14 oz.)

Accessories ...... Stand x 8

Screw x 16

Pad x 8

Speaker cable (2.5 m) x 2

- Specifications subject to change without notice due to product improvements.

● Care should be taken not to exceed the input power values noted above.

YAMAHA