Yamaha Natural Sound Bookshelf Speaker-Yamaha NS-A638 Speakers
A Three-Way Bookshelf Speaker Ready for Music or Home Theater
8-INCH WOOFER THREE-WAY BOOKSHELF SPEAKER SYSTEM
The NS-A638 utilizes an 8" woofer, 4" midrange, and 3/4" ferro-fluid cooled dome tweeter. It delivers powerful, clean, and accurate sound.
MAGNETICALLY SHIELDED
The NS-A638 is magnetically shielded so that it can be placed near a TV or video monitor and not degrade the picture quality.
MICRO-PEBBLE FINISH
The black micro-pebble finish look goes handsomely with most room decor.
NEW GRILLE DESIGN
New grille design and satin grille cloth provide an attractive and acoustically transparent protective cover for the driver
Specifications:
Type: Three-Way Acoustic Suspension, Magnetically Shielded Bookshelf Driver Complement
Woofer = 8 in. Hi-polymer Coated Cone with Inverted Dust Cover,
Midrange = 4 in. cone with Inverted Dust cover,
Tweeter = 3/4 ' in. Dome, Ferro-fluid cooled Input
Power Nominal = 70 W, Music Input = 140W
Frequency Range 90 to 20,000 Hz
Sensitivity 91 dB/W/M
Dimensions Width = 10-1/2 in., Height = 16-3/16 in., Depth = 13 in.
Weight 14 lbs., 6 oz.
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I also have a pair of the updated model the Yamaha NS-6390 (below).
Yamaha NS-6390 Specifications:
| Description | |
| The Yamaha NS-6390 is a 3-way car speaker having 140-watts power handling capacity to give you loud and clear sound. A frequency response ranging from 45Hz - 20kHz in this Yamaha 3-way speaker offers perfect sound at all levels. This Yamaha stereo speaker flaunts sensitivity of 91dB for maximum power even at low volumes. With an impedance of 8-ohms, this Yamaha 3-way speaker offers high level resistance and increases bass and mid output. Integrated with 8-inch coated woofer and 3/4-inch Ferro-flluid cooled balanced dome tweeter, the Yamaha NS-6390 speaker delivers punchy lows and crisp highs, thereby creating a balanced tone. Since this Yamaha stereo speaker is magnetically shielded, you are assured of a clear sound quality. | |
| Product Identifiers | |
| Brand | Yamaha |
| Model | NS-6390 |
| MPN | NS-6390 |
| UPC | 027108911618 |
| Key Features | |
| Speaker Type | Main / Stereo Speakers |
| Mounting | Bookshelf |
| Construction | 3-Way |
| Outdoor/Indoor | Indoor |
| Technical Details | |
| Peak Power Handling | 140 W |
| Nominal Power | 70 watt |
| Frequency Responses | 45 Hz - 20 kHz |
| Impedance | 8 ohm |
| Sensitivity | 91 dB |
| Magnetic Shielding | Magnetically Shielded |
| Connectivity | Wired |
| Design | |
| Available Colors | Black |
| Dimension | |
| Width | 10.51 in. |
| Depth | 13.23 in. |
| Woofer Size | 7.87 in. |
| Tweeter Size | 0.79 in. |
| Weight | 13.23 lb |
I also have a pair of the updated model NS-6490's, which I use with my receiver for general music listening and reinforcement for movies and concerts. I actually prefer the sound of the NS-6390 over the NS-6490s. I find the NS-6490s bass is stronger, but at the expense of the midrange. I've also read that they soften a little over time. We'll see... Below are some photos of the Yamaha NS-6490s.
Yamaha NS-6490 Speaker Specifications:
The luxurious finish of the cabinet, similar to that used on Yamaha grand pianos, indicates the outstanding quality of this speaker system. The 3-way acoustic suspension design features a 20cm (8") high compliance, pearl white, long throw cone woofer with a cloth surround and an inverted dust cover. The midrange is a 10cm (4") ferro-fluid cooled, pearl white cone type with an inverted dust cover. The 2.2cm (7/8") balanced-dome tweeter is also ferro-fluid cooled. The speaker is magnetically shielded so it can be used near a TV, and has gold-plated banana plug compatible terminals.
| Description | |
| Grace your home theatre system with the Yamaha NS-6490 speaker having 140-watt peak power handling capacity for high audio performance. Experience lowest to highest quality frequencies with this Yamaha 3-way speaker that features a frequency response ranging from 45Hz - 23kHz. The 90dB sensitivity of this Yamaha main/stereo speaker makes sure that you receive the loudest of sounds. The 8ohms impedance of this Yamaha 3-way speaker makes your musical experience absolutely pleasant. Integrated with an 8-inch cone woofer and 7/8-inch balanced dome tweeter, the Yamaha NS-6490 speaker delivers punchy lows and crisp highs, thereby creating a balanced tone. Since this Yamaha main/stereo speaker is magnetically shielded, you are assured of a clearer sound quality. | |
| Product Identifiers | |
| Brand | Yamaha |
| Model | NS-6490 |
| MPN | NS-6490 |
| UPC | 027108916996 |
| Key Features | |
| Speaker Type | Main / Stereo Speakers |
| Mounting | Bookshelf |
| Construction | 3-Way |
| Outdoor/Indoor | Indoor |
| Technical Details | |
| Nominal Power | 70 watt |
| Frequency Responses | 45 Hz - 23 kHz |
| Impedance | 8 ohm |
| Sensitivity | 90 dB |
| Magnetic Shielding | Magnetically Shielded |
| Connectivity | Wired |
| Design | |
| Available Colors | Black |
| Woofer Material | Polymer Composite |
| Dimension | |
| Width | 10.5 in. |
| Depth | 13.5 in. |
| Height | 16.5 in. |
| Woofer Size | 8 in. |
| Tweeter Size | 0.75 in. |
| Weight | 13.2 lb |
